Answers
Related Questions
In fruit flies, the phenotype for eye color is determined by a certain locus. E indicates the dominant allele and e indicates the recessive allele. The cross between a male wild-type fruit fly and a female white-eyed fruit fly produced the following offspring.
Wild Type Male Wild Type Female White-eyed Male White-eyed Female Brown-eyed Female
F1 Generation 0 45 55 0 1
The wild-type and white-eyed individuals from the F1 generation were then crossed to produce the following offspring.
Wild Type Male Wild Type Female White-eyed Male White-eyed Female Brown-eyed Female
F2 Generation 23 31 22 24 0
Required:
a. Determine the genotypes of the original parents (P generation) and explain your reasoning.
b. Use a Chi-squared test on the F2 generation data to analyze your prediction of the parental genotypes.
Answers
Answer:
The genotypes of the original parents are
Male: X⁺Y Female: X⁻X⁻The Chi-square analysis leads us to accept the prediction of the parental genotypes.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
(a) The genotypes for the original parents (P generation) are
Male: X⁺Y
Female: X⁻X⁻
(b) The prediction of the parental genotype is accepted by the Chi-squared test analysis.
What is the eye color pattern in fruit flies?Drosophila Melanogaster is a fruit fly with abnormally big, brightly colored eyes.
The range in color from red to sepia to white reveals a lot about the genetic makeup of the fly.
(a) E = + ⇒ Dominant allele coding for wild-type eyes
e = - ⇒ Recessive allele coding for white eyes
Now, Crossing the : male wild-type with a female white-eyed
(Parental) = X⁺Y x X⁻X⁻
(Phenotype) = wild white
(Gametes) = X⁺ Y X⁻ X⁻
(Punnett square) = X⁺ Y
X⁻ = X⁺X⁻ X⁻Y
X⁻ = X⁺X⁻ X⁻Y
In (F1)generation = 2/4 = 1/2 = 50% of the progeny are expected to be wild-type females.
And 2/4 = 1/2 = 50% of the progeny are expected to be white-eyed males.
Thus, the percentages are almost 50:50, as the expected ones.
So, the genotypes of the original parents are
Male: X⁺Y
Female: X⁻X⁻
(b) Using Chi-squared test :
Observed fruit fly type:
Wild Type Male - 25
Wild Type Female - 31
White-eyed Male - 22
White-eyed Female - 24
Expected fruit fly type:
Wild Type Male - 25
Wild Type Female - 25
White-eyed Male - 25
White-eyed Female - 25
Now, chi square [tex]= \sum\dfrac{(O- E)^2 }{E}[/tex]
By putting numbers in the formula, we are getting
Wild Type Male - 0.16
Wild Type Female - 1.44
White-eyed Male - 0.36
White-eyed Female - 0.04
Now, X² = 0.16 + 1.44 + 0.36 + 0.04 = 2
Critical value = 7.82
X² (2) < critical value (7.82)
Thus, this is the evidence to accept the given hypothesis.
Learn more about fruit flies here:
https://brainly.com/question/7274152
Please answer only if you know this is a final 
Answers
Answer:
ecosystem
Explanation:
PLS HELP 40 POINTS
Which of the following statements correctly compares sex-linked disorders between males and females?
Sex-linked disorders affect females more often than males because females have no X chromosomes.
Sex-linked disorders affect males more often than females because males have only one X chromosome.
Sex-linked disorders affect females more often than males because females have only one Y chromosome.
Sex-linked disorders affect males more often than females because males have only one Y chromosome.
Answers
Answer:
i have no idea what this means i kinda need more details but ill say it maybe is Sex-linked disorders affect males more often than females because males have only one X chromosome. but im not really sure
Explanation:
It’s tricky to develop a vaccine for the common cold
because:
Answers
Movement of the lithospheric plate
Answers
Answer:
Movement of the lithospheric plate
The movement of lithospheric plates is known as the plate tectonics, this was a theory before but now it is widely accepted as true and actually happening around the planet.
These movements in the lithospheric plates of the planet, is the reason why the planet looks like what it is today. The continents, countries and all land formations and underwater features are products of plate tectonics.
#CarryOnLearning
Answer:
Explanation:
Movement of the lithospheric plate is a major topic in the theory of plate tectonics. the motions of two plates against each other can cause subduction of plates, volcanoes to form and earthquakes to happen.
New Zealand is one of the most geologically active places on Earth. Earthquakes, volcanoes and geysers commonly occur throughout the region. What most likely causes these to happen throughout New Zealand? (SC.7.E.6.7)
Answers
name two ways in which roundworms are anatomically similar to arthropods
Answers
As matter is recycled in our ecosystems, is lost. A. oxygen B. nitrogen C. carbon D. heat energy
Answers
d. heat energy
Explanation:
the rest minerals are all not lost , i guess
Which of the following is NOT associated with Okazaki fragments?
A.
lagging strand
B.
ligase
C.
bases added to the 3’ end
D.
continuous replication
E.
DNA polymerase III
Answers
Answer:
The correct answer is - D. continuous replication.
Explanation:
Okazaki fragments are short DNA sequences synthesized in the lagging strand as DNA polymerase enzyme is able to synthesize only from 5' to 3' so nucleotide can not bind on 5' end but only 3' end and the DNA strands are antiparallel.
They are short fragments of DNA synthesized from RNA primers on the lagging strand and combined by the ligase enzyme. Okazaki fragments show a discontinuous manner in the synthesis of DNA.
The correct answer is D. continuous replication as they don't have it.
Okazaki fragments are brief DNA sequences synthesized withinside the lagging strand as DNA polymerase enzyme is capable of synthesizing simplest from 5' to 3^ high SO nucleotide can't bind on 5' cease however simplest 3' cease and the DNA strands are antiparallel.
They are brief fragments of DNA synthesized from RNA primers at the lagging strand and blended via way of means of the ligase enzyme. Okazaki fragments display a discontinuous way withinside the synthesis of DNA.
What are Okazaki fragments?Okazaki fragments are small sections of DNA that might be fashioned all through the discontinuous synthesis of the lagging strand all through DNA replication. They are essential due to the fact they permit each daughter strand to be synthesized, which is vital for molecular division.
Thus it is clear thsat Okazaki fragments are not associated with continuous replication.
To know more about Okazaki fragments refer to the link :
https://brainly.com/question/21265857
3. If you were looking at a cell that had all of its chromosomes lined up down the middle of
the cell, what phase must it be in?
1. Telophase
2. Prophase
3. Metaphase
4. Anaphas
Answers
Answer:
3. Metaphase
Explanation:
Metaphase is the stage in the cell cycle where the chromosomes line up in a line down the middle of the cell (some people call it the metaphase plate).
The way I like to remember it is: Metaphase is in the Middle.
I hope this helps! :D
Answer:
I'm sorry hindi ko po alam
What is the complementary DNA strand from the following DNA template GGTACTAGCCATATCG
Answers
Answer:
CCATGATCGGTATAGC
Explanation:
A pairs with T
C pairs with G
Which organism is most abundant in the Terrestrial food chain
Answers
PLS HELP THE DUE DATE IS TOMORROW AND I CHOOSE AN URBAN CITY
Answers
Answer:
1, 2, the last one
The North Slope of Alaska has concentrations of air pollutants comparable to the air pollutant concentration of some major cities on the east coast of the United States because
Answers
Answer:
pollutants are transported by are from Eurasia
Explanation:
Which properties of water are most responsible for the capillary action in plants?
Answers
Answer:
The property of "cohesion forces" of the water makes them responsible for the capillary action in the plants.
Explanation:
Water molecules in the soil get pulled into the plant through roots and travel over the vessels and tubes in the stem to various parts of the plant. Leave surface have small pores, named as stomata or guard cells that will help in transpiration or evaporation. This process of transpiration will help the ground water to travel opposite to the gravity and travel all parts of the plant body carrying minerals and essential food particles.
Dr. Nachman and his colleagues collected rock pocket mice across 35 kilometers of the Arizona Sonoran Desert, which included both dark, rocky lava outcrops and light, rocky, granite areas. They recorded substrate color, and coat-color frequencies for each location. Each site was separated from any of the others by at least eight kilometers. The researchers trapped a total of 275 mice. Their data are summarized below:
Collecting Site Substrate Color Number of Mice Phenotype
Light Dark
1 Dark 22 3 19
2 Light 80 74 6
3 Light 22 19 3
4 Dark 28 3 25
5 Light 58 25 33
6 Dark 65 9 56
Required:
a. Calculate the overall frequencies of light-colored mice and dark-colored mice caught on light-colored substrates.
b. Calculate the overall frequencies of light-colored mice and dark-colored mice caught on dark-colored substrates.
c. Using the Hardy-Weinberg equation and data from the table above, determine the frequency of the three genotypes on the light, rocky, granite substrate. For genotype frequencies use three decimal places and for calculations using the allele frequencies, you must round the allele frequencies to two decimal places.
Answers
Complete question
Dr. Nachman and his colleagues collected rock pocket mice across 35 kilometers of the Arizona Sonoran Desert, which included both dark, rocky lava outcrops and light, rocky, granite areas. They recorded substrate color, and coat-color frequencies for each location. Each site was separated from any of the others by at least eight kilometers. The researchers trapped a total of 275 mice. Their data are summarized below (numbers have been slightly modified for the purposes of this worksheet).
Field Data Summary
Collecting Site Substrate Color Number of Mice Phenotype Light Dark
1 Dark 22 3 19
2 Light 80 74 6
3 Light 22 19 3
4 Dark 28 3 25
5 Light 58 25 33
6 Dark 65 9 56
1. Calculate the overall frequencies of light-colored mice and dark-colored mice caught on light-colored substrates. [to 3 decimal places]
2. Calculate the overall frequencies of light-colored mice and dark-colored mice caught on dark-colored substrates. (to 3 decimal places)
3. Using the Hardy-Weinberg equation and data from the table above, determine the frequency of the three genotypes on the light, rocky, granite substrate. For genotype frequencies use three decimal places and for calculations using the allele frequencies, you must round the allele frequencies to two decimal places.
4. Using the Hardy-Weinberg equation and data from the table above, determine the frequency of the three genotypes on the dark, rocky lava substrate. (to 3 decimals). For genotype frequencies use three decimal places and for calculations using the allele frequencies, you must round the allele frequencies to two decimal places.
5. Which fur color seems to have the greatest overall selective advantage? Use data collected from both dark-colored and light- colored substrates to support your answer.
6.What environmental change gave a selective advantage for one coat color over another?
7. In a separate study, 76 rock pocket mice were collected from four different, widely separated areas of dark lava rock. One collecting site was in Arizona. The other three were in New Mexico. Dr. Nachman and colleagues observed no significant differences in the color of the rocks in the four locations sampled. However, the dark-colored mice from the three New Mexico locations were slightly darker than the dark-colored mice from the Arizona population. The entire Mc1r gene was sequenced in all 76 of the mice collected. The mutations responsible for the dark fur color in the Arizona mice were absent from the three different populations of New Mexico mice. No Mc1r mutations were associated with dark fur color in the New Mexico populations. These findings suggest that adaptive dark coloration has occurred at least twice in the rock pocket mouse and that these similar phenotypic changes have different genetic bases. How does this study support the concept that natural selection is not random?
8. To determine if the rock pocket mouse population is evolving, explain why it is necessary to collect fur color frequency data over a period of many years.
Answer:
1)
frequencies of light-colored mice ≅ 0.74 frequencies of dark-colored mice ≅ 0.262)
frequencies of light-colored mice ≅ 0.13 frequencies of dark-colored mice ≅ 0.873)
p² ≅ 0.02 q² ≅ 0.74 2pq ≅ 0.244)
q² = 0.13 p² = 0.4 2pq = 0.465) The dark-colored fur seems to have the greatest overall selective advantage
6) Dark lava changed the color of the substrate, from light to dark.
7) Because to produce dark color, animals from the different regions suffered different mutations that drove them to have almost the same dark fur color.
8) To see if the mice population is evolving. If it is, there will be a change in the allelic and genotypic frequencies over the years. If it is not evolving, the frequencies will keep equal through the years.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
write a paragraph summary about the differences between amphibians and mammals (humans).
Answers
Answer:
Mammals give birth to live young, whereas the birth of amphibians takes place externally. Mammals are warm-blooded, while amphibians are cold-blooded. Mammals can live in all habitats, unlike amphibians, and have muted colors. Some amphibians can regenerate their limbs.
Which factors can lead to a mass movement?
Answers
Answer:
Such factors include: weathering or erosional debris cover on slopes, which is usually liable to mass movement; the character and structure of rocks, such as resistant permeable beds prone to sliding because of underlying impermeable rocks; the removal of the vegetation cover, which increases the slope's susceptibility ..
Explanation:
Answer:
Explanation:
Weathering or erosional debris cover on slopes, which is usually liable to mass movement; the character and structure of rocks, such as resistant permeable beds prone to sliding because of underlying impermeable rocks; the removal of the vegetation cover, which increases the slope's susceptibility
Two polypeptides, X and Y, have similar tertiary structures. X normally exists as a monomer while Y exists as a tetramer, Y4. What differences might be expected in the amino acid composition of X versus Y
Answers
Answer:
Due to number of amino acids.
Explanation:
The main differences might be expected in the amino acid composition of X versus Y because the X polypeptide is made up of one smaller unit of amino acid while on the other hand, Y polypeptide is made up of four smaller units of amino acids. The name of X is monomer which means composed of one amino acids while Y exists as a tetramer which means it has four amino acids. So we can conclude that the main difference between X and Y is the presence of number of amino acids.
Amino acids are organic compounds that are formed of amino, carboxylic and a side group. They bond to form protein structures.
The amino acids fold in various structures like primary, secondary, tertiary etc. The basic contrast in an amino acid arrangement of polypeptide X and Y is that the X is made of small units while Y is made of larger units.
X polypeptide is a monomer that is it only has one unit of amino acid while Y is a tetramer that is it has four-unit of amino acids.
Therefore, the number of amino acids is the main distinction between X and Y tertiary structures.
To learn more about the monomer and tetramer structure of amino acids follow the link:
https://brainly.com/question/18995213
What is thought to have caused the ice ages?
A) Earth's precession
B) Earth's tilt
C) Earth's rotation
D) Earth's magnetic field
Answers
Answer:
A) Earth's precession
Explanation:
Earth's precession is the movement of Earth that acts like a cone.
Earth has three movements: rotation, revolution and precession.
(equinoctial precession)
How many molecules are in 3Hg(SO)4
Answers
Answer:
1.806 × 10²⁴ molecules
Explanation:
From the chemical compound given in this question, there are 3 moles of Hg(SO)4.
To calculate the number of molecules in 3 moles of Hg(SO)4, we multiply the number of moles by Avagadro number (6.02 × 10²³)
number of molecules = 3 × 6.02 × 10²³
= 18.06 × 10²³
= 1.806 × 10²⁴ molecules
Hunter is on a waiting list for a kidney transplant after his kidneys shut down and he went into renal failure. What can help keep Hunter alive by filtering his blood until he receives his transplant? chemotherapy antibiotics dialysis ultrasounds
Answers
Answer: C: dialysis
Explanation:
c. dialysis
Answer:
c
Explanation:
In an energy pyramid, the lowest level has: a) less energy than the top level. b) less energy than the second level. c) more energy than the top level. d) the same amount of energy as the second level.
Answers
Answer:
I believe the answer would be B because if I'm sure the bottom is grain which has higher levels in grain and glucose I believe and that doesn't produce energy . The second level is meat and that has protein which give us strength.
convention cells hbnmb,
Answers
Answer:
convention cells
Explanation:
In the field of fluid dynamics, a convection cell is the phenomenon that occurs when density differences exist within a body of liquid or gas. These density differences result in rising and/or falling currents, which are the key characteristics of a convection cell. When a volume of fluid is heated, it expands and becomes less dense and thus more buoyant than the surrounding fluid. The colder, denser part of the fluid descends to settle below the warmer, less-dense fluid, and this causes the warmer fluid to rise. Such movement is called convection, and the moving body of liquid is referred to as a convection cell. This particular type of convection, where a horizontal layer of fluid is heated from below, is known as Rayleigh–Bénard convection. Convection usually requires a gravitational field, but in microgravity experiments, thermal convection has been observed without gravitational effects.
What is a complete offspring
Answers
The product of the reproductive processes of an animal or plant : young, progeny The disease can be transmitted from parent to offspring. b : child a mother of numerous offspring.
Schools almost over, good luck!!
Answer:
Offspring is defined as a human child or animal child, or the children of a family for many years. An example of an offspring is the cub of two lions at the zoo. An example of offspring is how a father refers to all his descendants. The definition of an offspring is a result.
Explanation:
hope this helps
True or false
help! 15point n marked as a brainlist
Answers
Show instructions
Questions 1-9 of 9 Page 1 of 1
Question 1 point)
1. The arctic tundra is a tragile ecosystem. Use the pictures and descriptions in section 2 to answer the following:
Based on your observations of the ecosystem, which of the following characteristics is TRUE about the fragile tundra
ecosystem?
Answer please
Answers
This question is incomplete because the images a section 2 are not given. I searched for the complete question but could not find it. However, based on my knowledge and the characteristics of the tundra this is the answer.
The correct answer is C. The climate is harsh, which limits the number of species that can live there.
Explanation
The tundra is the name of an ecosystem that occupies a fifth of the earth's surface, mainly in the northern hemisphere, this is characterized by having a frozen subsoil that limits the emergence and growth of natural vegetation and trees. This ecosystem is the coldest on the planet due to its location near the poles, its landscape is characterized by a layer of snow that covers most of the ground. In addition, the climatic conditions are extreme, which limits the number of plant and animal species that can live there. According to the above, the correct answer is C. The climate is harsh, which limits the number of species that can live there.
pls help
Identify the organelle that packages and secretes proteins and membrane parts
A. Nucleus
B. Mitochondria
C.Golgi Apparatus
D.Cell Membrane
Answers
What impact Can land use and land zoning have on soil fertility, and subsequently on food production?
Answers
Answer:
The main consequences of inappropriate land use changes are land degradation and soil quality deterioration through loss of vegetative cover, top soil moisture, infiltration capacity, water storage, soil organic matter, fertility, resilience, natural regeneration capacity, and a lower water table, factors that are ...
hope it Helps U
please mark me as brainlist
PLEASE HELP- Which step in developing a
balanced ration involves
determining what feedstuffs are
available in your location?
Answers
Answer:
1
Explanation:
step 1 because it shows locations