Answer:
Primase
Explanation:
Primase: the enzyme responsible for initiating synthesis of RNA primers on the lagging strand during DNA replication.
Answer:
Primase
Explanation:
A young man recently learned from a genetics doctor that he had a condition called Friedreich's ataxia. This syndrome affects the arms and the legs with the person usually needing a wheel chair. Neither of his parents have this disorder. However the young man's grandfather was wheelchair bound, but didn't know why because genetic information was very limited when his grandfather grew up. Based on this information, what type of inheritance does Friedreich's ataxia follow? Explain why. What are the genotypes of each of the individuals mentioned in this question? Create a pedigree chart to support your answer.
Answer: Friedreich ataxia is a genetic condition that affects the nervous system and causes movement problems. People with this condition develop impaired muscle coordination (ataxia) that worsens over time. Other features of this condition include the gradual loss of strength and sensation in the arms and legs; muscle stiffness (spasticity); and impaired speech, hearing, and vision. Individuals with Friedreich ataxia often have a form of heart disease called hypertrophic cardiomyopathy, which enlarges and weakens the heart muscle and can be life-threatening. Some affected individuals develop diabetes or an abnormal curvature of the spine (scoliosis).
Most people with Friedreich ataxia begin to experience the signs and symptoms of the disorder between ages 5 and 15. Poor coordination and balance are often the first noticeable features. Affected individuals typically require the use of a wheelchair about 10 years after signs and symptoms appear.
About 25 percent of people with Friedreich ataxia have an atypical form in which signs and symptoms begin after age 25. Affected individuals who develop Friedreich ataxia between ages 26 and 39 are considered to have late-onset Friedreich ataxia (LOFA). When the signs and symptoms begin after age 40 the condition is called very late-onset Friedreich ataxia (VLOFA). LOFA and VLOFA usually progress more slowly than typical Friedreich ataxia.
The genotype of the grandfather and the young man is ff (f allele for Friedreich's ataxia) The genotype of the father and the mother is Ff.
What is a genotype?A genotype is a classification of the type of variant found at a certain position (i.e., a locus) in the genome. Symbols can be used to symbolize it.
Friedreich ataxia is a hereditary disorder that causes movement issues by affecting the neurological system. This disorder causes decreased muscular coordination (ataxia), which worsens over time.
Individuals with Friedreich ataxia frequently have hypertrophic cardiomyopathy, a type of cardiac disease that enlarges and weakens the heart muscle and can be fatal. Some people who are impacted have diabetes or an irregular spine curvature (scoliosis).
Therefore, the genotype of the grandfather and the young man is ff (f allele for Friedreich's ataxia) The genotype of the father and the mother is Ff.
To learn more about genotype, refer to the link:
https://brainly.com/question/29156144
#SPJ2
Where is the albedo effect the greatest?
a. Africa
b. Australia
c. Europe
d. Antarctica
Which two planets have that most closely resemble this comparison?
Explanation:
Kepler-452b
Kepler-452b (a planet sometimes quoted to be an Earth 2.0 or Earth's Cousin based on its characteristics; also known by its Kepler Object of Interest designation KOI-7016.01) is an exoplanet orbiting the Sun-like star Kepler-452 about 1,402 light-years (430 pc) from Earth in the constellation Cygnus
A student is presented with a model of a digestive system and is asked to remove one structure (small or large organ) that will have the largest impact on decreasing chemical digestion. Which structure should the student remove
Answer:
Small intestine
Explanation:
Digestion is the process of breaking down food molecules into simpler and usable forms by the body cells. The process of digestion involved the mechanical aspect and chemical aspect. The mechanical one deals with using physical means like chewing to break down the food particles.
However, the chemical one deals with the usage of chemically-secreted enzymes to work on the food molecules. Lots of digestive organs are involved in this chemical digestion, but, the most of chemical digestion takes place in the SMALL INTESTINE. The small intestine is where most of the chemical digestion occurs including absorption.
Hence, according to this question, the student should remove the SMALL INTESTINE because it will have the largest impact on decreasing chemical digestion.
Which worm sometimes uses specialized tentacles to exchange gas and capture food?
a fluke
a planarian
an earthworm
a marine worm
Answer:
marine worms
Explanation:
6. How will you describe the change in energy of water molecules when
its boiling?
What are some methods that predators use to capture prey?
Answer:
Offensive Strategies of Predators
Cheetahs use speed to outrun their prey, and eagles, hawks, owls and falcons use flight to their advantage while hunting. Venomous snakes, spiders and wasps use poisons to either kill or immobilize their prey. Some predators even use mimicry to capture prey.
What are the different types of Adaptations? Give examples of each.
Give an example for natural selection occurring based on food sources
Answer:
Behavioural-made by an organism that helps it to survive/reproduce.
Physiological-a body process that helps an organism to survive/reproduce.
Structural -a feature of an organism's body that helps it to survive/reproduce
Explanation:
Which of the following is NOT part of the cell theory?
A : All life functions are carried on by cells
B: All cells come from cells that are already alive
C : All cells must breath air
D: All organisms are made up of cells
Answer:
C. Because that we had to go over that. That's so easy
if a 900 newton tv is moved 3m in 60 seconds. how much power used urgent plzzzz
name a fish which possesses a poisonous sting.....
who one answer this question I'll give her or him answer as brainlist answer it's my promise
but u have to answer it in 20 seconds
Answer: Scorpionfish
Explanation:
The marine fish of the family Scorpaenidae are the most venomous fish in the world. Three main genera provoke the majority of envenomations in humans: Synanceja (stonefish) (Fig. 36-50), Pterois (lionfish) and Scorpaena (true scorpionfish) (Fig.
3. Autotrophs that convert light energy into chemical energy is called
a. photoautotrophs
b. heterotrophs
c. chemoautotrophs
d. omnivores
Answer:
A) Photoautotrophs
Explanation:
Tbh Im not entirely sure but photo means light and it seems like the most likely answer
Buildings built to remain standing during an earthquake are said to be
earthquake proof.
Type here to search
BH
Desktop
1:33 AM
1/15/2021
True or false
Answer:
True.
Explanation:
Earthquake proof buildings are those which have the ability to stand during an earthquake. Shock absorbers that is present between the building and the ground motion, able the building to remain upright during an earthquake. The shock absorbers has the ability to absorb all the disturbance produced in the building and for that purpose the building is safe.
How can we tell histologically that skeletal muscle tissue is highly vascular?
Answer:Muscle tissue is composed of cells specialized for contraction. Muscle is classified into three types according to their structure and function:
Skeletal muscle cells - striated, voluntary control
Cardiac muscle cells - striated, involuntary control
Smooth muscle cells - nonstriated, involuntary control
Skeletal and cardiac muscle cells are called striated because they show an alternating series of bands. The repeating arrangement of their basic contractile unit, the sacromere, produces these striations.
In all types of muscle, contraction is caused by the movement of myosin filaments along actin filaments.
The terms muscle cell and muscle fiber are synonymous.
Explanation:
Two genes are hypothesized to be linked. The map distance between the genes is thought to be 12 map units. Out of 1000 offspring produced by two heterozygous parents, predict how many would occur in each phenotypic category.
Answer:
Approximately the number of individuals with each phenotype is:
RS-->0.75 x 1000 = 750rs--> 0.19 x 1000 = 190Rs--> 0.05 x 1000 = 50rS--> 0.05 x 1000 = 50Explanation:
Available data:
Two genes are hypothesized to be linkedThe map distance between the genes is thought to be 12 map units. Two heterozygous parents1000 offspring producedLet us say that the two diallelic genes are R (alleles R and r) and S (alleles S and s)
Heterozygous parents might have the following genotype RS / rs
We know that there are 12mp between genes, which means that the recombination frequency equals 0.12 or 12%.
0.12 of the gametes are recombinants and 0.88 are parentals. There are two types of parentals and two types of recombinant, so 0.06 + 0.06 are recombinants while 0.44 + 0.44 are parentals. This is:
Cross:
Parentals) RS/rs x RS/rs
Gametes) RS (parental) 0.44
rs (parental) 0.44
Rs (Recombinant) 0.06
rS (Recombinant) 0.06
Punnet square) RS rs Rs rS
RS RS/RS RS/rs RS/Rs RS/rS
rs RS/rs rs/rs Rs/rs rS/rs
Rs RS/Rs rs/Rs Rs/Rs rS/Rs
rS RS/rS rs/rS Rs/rS rS/rS
F1) Genotypes:
1 RS/RS --> 0.44x 0.44 = 0.1936 2 RS/rs --> 0.44x 0.44 = 0.1936 x2 = 0.38722 RS/Rs --> 0.44 x 0.06 = 0.264 x 2 = 0.0532 RS/rS --> 0.44 x 0.06 = 0.264 x 2 = 0.0531 rs/rs --> 0.44x 0.44 = 0.1936 2 rs/Rs --> 0.44 x 0.06 = 0.264 x 2 = 0.0532 rS/rs --> 0.44 x 0.06 = 0.264 x 2 = 0.0531 rS/rS --> 0.06 x 0.06 = 0.00361 Rs/Rs --> 0.06 x 0.06 = 0.00362 Rs/rS --> 0.06 x 0.06 = 0.0036 x 2 = 0.0072Phenotypes:
RS-->0.7506 (RS/RS + RS/rs + RS/Rs + RS/rS + Rs/rS)rs--> 0.1936 (rs/rs)Rs--> 0.0566 (rs/Rs + Rs/Rs)rS--> 0.0566 (rS/rS + rS/rs)Now, to know how many individuals would occur in each phenotypic category, you just need to multiply it by 1000, that is the total number of individuals
RS-->0.75 x 1000 = 750rs--> 0.19 x 1000 = 190Rs--> 0.05 x 1000 = 50rS--> 0.05 x 1000 = 50Predict one possible problem with a DNA molecules' structure that could occur.
Answer: DNA damage due to environmental factors
Explanation:
DNA is a genetic material present in the cell of living organisms. The DNA can be damaged by the environmental factors which can induce mutations in the structure of the DNA further affecting the function. The environmental factors like ultraviolet rays, chemicals, ionizing radiation can damage the structure of the DNA. For example, the chemical may contain alkylating agents which can cause the hydrolysis of the chemical bonds in the DNA.
Mountains, volcanoes, and earthquakes may occur when one plate-
A pushes apart
B erodes
C breaks open
D pushes against another plate
Answer: d
Explanation:
D trust me
Cognition is studied indirectly. Please select the best answer from the choices provided T F
The statement "Cognition is studied indirectly" is true.
What is cognition?The mental action or process of obtaining psychological features and apprehension through self-satisfaction, experience, and the senses is the definition of cognition.
Cognitive psychologists are interested in the investigation of mental functions. This relates to the study of cognition, memory, learning, and problem-solving processes in people. Cognitive psychologists are interested in how people think or react psychologically to various situations.
On the other side, behavioral psychologists are interested in researching and observing behavior. It is additional research on the interactions between stimulants and outcomes.
Therefore, the statement is true about cognition.
To learn more about cognition, refer to the below link:
https://brainly.com/question/8740144
#SPJ6
How does the Digestive system help to maintain
A. Allow organisms to pass on life
B. Act as structure and support for the body
C. Break down food a form our cells can use and absorb
Answer:
C.
Explanation:
The digestive system allows our body to break down the foods we eat, so that we can get the nutrients from it!
Hope this helps!!
The picture below shows two galaxies.
Which of these statements best describes a similarity between the two galaxies?
a)Both have elongated centers.
b)Both have shapes determined by gravitational forces.
c)Both change their shape from time to time.
d)Both are held together by electrostatic force.
Answer:
I think its B
Explanation:
Because all I know is that galaxies are defined as the system which contains billions of stars bind together by gas or dust and held together by gravitational forces. There are also three types of galaxies which are elliptical, spiral, and irregular shaped and all galaxies have different shapes of centers.
Answer:
Both change their shape from time to time.
Explanation:
A group of two or more organs that work together to perform a specific function.
A. Cell
B. Tissue
C. Organ System
Cancer is the result of an improperly regulated cell cycle. Describe two reasons why cells can form tumors
Answer:
•Continuous cell division
•Too little cell division
Explanation:
Factors that affects cell division includes
•Nutrients
•Genetics
•Chemical and toxics
•Stress
Answer:
-Continuous cell division-Too little cell division-Too little DeathExplanation:
Factors that affects cell division includes
-Nutrients
-Genetics.
-Chemical and toxics,
-Stress.
"Image result for why cells can form tumors
Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor."
What products of the Calvin Cycle are used by the light reactions?
Answer:
ATP and NADPH
Explanation:
The Calvin cycle uses the reducing powers ATP and NADPH from the light dependent reactions to produce sugars for the plant to use.
What is the average body temperature of humans?
A. 25°C
B. 43°C
C. 37°C
Answer:
Explanation:
C
Answer:
It is 37 degree C
I normal cases
A. Structure that organizes motion of chromosomes.
Answer:
lol NO I MENA CENTROILE
Explanation:
An accidental change in DNA is a
Mutation or Speciation
Answer:
the answer is mutation I think
CAN SOMEONE PLEASE HELP ME WITH THIS PLEASE I WANT TO PASS!!!
Answer:
true
Explanation:
Answer:
its true if they do not move locations so that answer is kinda tricky id choose true tho
How does the carbon locked in shells of marine organisms move back to the atmosphere?
A through subduction of deposits and volcanism
B through the process of respiration in these organisms
C through death and decomposition
D through the microbial process of ammonification
E through chemical reactions in acidifying oceans
Carbon locked in shells of marine organisms moves back to the atmosphere through death and decomposition of those organisms.
What is the carbon cycle?The carbon cycle refers to the movement of carbon through the biogeochemical cycle. The carbon cycle cuts across;
The lithosphereThe hydrosphereThe atmosphereCarbon locked in shells of marine organisms moves back to the atmosphere through death and decomposition of those organisms.
Learn more about the carbon cycle: https://brainly.com/question/15290121
Which of the following is true of ecological succession? A-pioneer organisms move into new communities first. B-primary productivity decreases as succession proceeds. C-secondary succession takes place within new communities with no previous soil. D-all of the above.
Answer: Pioneer organisms move into new communities first.
Explanation:
What determines the genetic code you had when you were born?
Answer:
Explanation:
your biological parent's gene