Answer:
2).a gene is a basic unit of heredity and a sequence of nucleotides in DNA that encodes the synthesis of a gene product, either RNA or protein
A cross in which only a single trait with two variations is considered is called a(n) cross or single factor cross.
Answer:
Monohybrid
Explanation:
Under the hypothesis of blending inheritance, what color(s) would the offspring of a black cat and a white cat be
Under the hypothesis of blending inheritance, the offspring of a black cat and a white cat would be GREY. This theory is not now accepted.
Blending inheritance is an erroneous theory from the 19th century that proposed that offspring inherit phenotypic traits as 'average values' observed for such traits in their parents.
Mendel's laws of heredity (i.e., the Law of Segregation and the Law of Independent Assortment) showed that blending inheritance is based on erroneous concepts.
Moreover, incomplete dominance is an inheritance pattern different from blending inheritance because incomplete dominance refers to the observation that in certain traits both gene variants or 'alleles' are expressed in heterozygous individuals.
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Mutations that lead to genetic disease commonly cause human illness because:
A. a molecule normally metabolized by an enzyme accumulates to toxic levels.
B. the overproduction of enzymes makes you sick. mutations in DNA cause body cells to self-destruct.
C. mutations cause extra DNA to be made, which gets into your blood, causing illness.
D. most genetic diseases make people more likely to become sunburned.
Answer:
The answer is A.
Explanation:
I have no explanation for this but I know for a fact that it's A.
How many rounds of mitosis produce 64 daughter cells?(1 point)
4
2
6
8
The correct answer is 6 rounds.
Hope this helps!
Answer:
6
Explanation:
PLS HELP ME QUICK, Name and Title:
Include your name, instructor's name, date, and name of lab.
Objective(s):
In your own words, what was the purpose of the lab?
Hypothesis:
In this section, please include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
Procedure:
Complete your hypothesis (above).
Identify the independent (test) variable and the dependent (outcome) variable: __________________________
Practice using the computer model. Select each marker to see what it does. Here is a summary you can refer back to as you complete your experiment.
Carbon Dioxide Emissions Slider: You will use the arrows to change the amounts of carbon emissions.
Time Step Size: This will allow you to view the data every 5 years or every 10 years.
Start Over: Use this to reset the model if needed.
The current carbon emissions are 9.8 gigatons, or 9.8 billion tons. Complete all three scenarios to find out what happens to the global temperature if these emissions stay the same, decrease, or increase over the next century. Follow the instructions in the Data section of this report.
Data:
For each scenario, record the carbon dioxide emission rate and the global temperature. The data for the years 1960–2010 are already filled out for you.
Scenario One: Carbon dioxide emissions stay the same
Set the carbon dioxide emissions rate to 9.8 gigatons.
Set the time step size to 10 years.
Select step forward until you have the data through the year 2110.
Record the data in the table below.
Year Carbon Emissions (gigatons) Temperature (Fahrenheit)
1960 4.2 57.2
1970 5.8 57
1980 6.2 57.4
1990 7.8 57.6
2000 8 58
2010 9.8 58
Maintain carbon dioxide emissions at 9.8 for the rest of scenario one.
2020
2030
2040
2050
2060
2070
2080
2090
2100
2110
Scenario Two: Carbon dioxide emissions decrease
Set the carbon dioxide emissions rate to 9.8 gigatons.
Set the time step size to 10 years.
Select the step forward button once.
Decrease the carbon dioxide emissions by 0.2 and press step forward.
Continue stepping forward once, decreasing the carbon emissions each time, until you reach 2110.
Record the data in the table below.
Year Carbon Emissions (gigatons) Temperature (Fahrenheit)
1960 4.2 57.2
1970 5.8 57
1980 6.2 57.4
1990 7.8 57.6
2000 8 58
2010 9.8 58
Decrease carbon dioxide emissions by 0.2 each step forward for the rest of scenario two.
2020
2030
2040
2050
2060
2070
2080
2090
2100
2110
Scenario Three: Carbon dioxide emissions increase
Set the carbon dioxide emissions rate to 9.8 gigatons.
Set the time step size to 10 years.
Select the step forward button once.
Increase the carbon dioxide emissions by 0.2 and press step forward.
Continue stepping forward once, increasing the carbon emissions each time, until you reach 2110.
Record the data in the table below.
Year Carbon Emissions (gigatons) Temperature (Fahrenheit)
1960 4.2 57.2
1970 5.8 57
1980 6.2 57.4
1990 7.8 57.6
2000 8 58
2010 9.8 58
Increase carbon dioxide emissions by 0.2 for each step forward for the rest of scenario three.
2020
2030
2040
2050
2060
2070
2080
2090
2100
2110
Conclusion:
Use your data to answer the following questions. Use complete sentences, and be as detailed as possible.
Summarize how the carbon emissions affected the atmospheric temperature in each of the three scenarios:
Scenario One:
Scenario Two:
Scenario Three:
Was your hypothesis supported by your results or not? Explain how you know.
Explain the difference between the greenhouse effect and global warming.
Based on your knowledge of how the greenhouse effect works, why does the level of carbon dioxide affect the global temperature?
Name three sources of atmospheric carbon dioxide.
PLS HELP ME AM IN A HURRY
Answer:
Scenario One:
Scenario Two:
Scenario Three:
Was your hypothesis supported by your results or not? Explain how you know.
Explanation:
What is global warming?:
[tex] \bigstar \underline{ \large{ \sf{ \pink{Global \: \: Warming}}}} : [/tex]
▶ Global warming can cause sea levels to rise dramatically. In many places, coastal areas have already been flooded. Global warming could result in wide ranging effects on rainfall patterns, agriculture, forests, plants and animals. Majority of people living in regions which are threatened by global warming are in Asia. A recent climate change report gives us only a limited time to keep the greenhouse gases at the present level. Otherwise, the temperature may rise by more than 2 degrees Celsius by the end of the century, a level considered dangerous.______________________________
who was the first person to see cells under a microscope
please help I really ask for your help.what insects don't have biting and chewing mouth parts.
what is the texture of a butterfly wing.
Answer: soft, chalkey
Explanation: .
What are the little hairs that line the nasal cavity and help trap microorganisms?
Answer:
c. Cilia is correct
Explanation:
What would be most likely to happen to a plant that had working chloroplasts in its cells but had taken in a poison that kept mitochondria from working? (1 point)1.It would use its chloroplasts to do the work the mitochondria should have done.2.It would use the energy from the Sun to replace the energy provided by mitochondria.3.It would have a difficult time gathering enough solar energy during photosynthesis.4.It would not be affected since plants do not require mitochondria.
Answer:
It would use its chloroplasts to do the work the mitochondria should have done
which hormone plays a key role in determing the ability to perform better on tests of spatial ability for
Design a solution to the Zebra Mussel invasion. What steps may be taken to reduce the negative impact of Zebra Mussels in the rivers and lakes in North America? Your response should include a logical way to reduce the number of Zebra Mussels. You should include 2-3 steps regarding how your method will work.
Answer: See explanation
Explanation: Zebra mussels are creatures that latch on to boats and inhabit areas that they are supposed to be in. To reduce the influx of Zebra mussels you can
1. Always check the bottom of your boat before coming back from a different area.
2. If you see zebra mussels you can use high pressure hot water to get them off.
3. Mark the area zebra mussels are located so you can warn others to look under their boats when they are coming back from that area.
Hope this helps!
Recall what you know about hypertonic, hypotonic, and isotonic solutions. When an environment is hypotonic, what happens
to the cell?
When a cell is submerged in a hypotonic solution, water osmosis causes the cell to become flaccid.
What is osmosis?
A semi-permeable membrane is used in the process of osmosis, which allows solvent molecules to move from a solution of low concentration to a solution of high concentration.
Osmosis is a passive process that doesn't require any energy to complete. In order for the concentrations on either side of the membrane to be equal, molecules must shift from an area of greater concentration to one of lower concentration.
Any solvent, including gases and supercritical liquids, can go through the osmosis process.
When solute concentrations inside and outside of the cell are equal, an isotonic solution has been created.When the concentration of solutes outside the cell is higher than within, the solution is said to be hypertonic. When the concentration of solutes inside the cell is higher than outside, the solution is said to be hypotonic.
Therefore, when a cell is submerged in a hypotonic solution, water osmosis causes the cell to become flaccid.
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What is a strength in the figure?
(1 point)
The figure shows structures in a cell.
The figure shows the steps involved in DNA replication.
The figure shows stem cell differentiation.
The figure shows where mitosis occurs in the cell cycle.
Answer:
The figure shows where mitosis occurs in the cell cycle
Explanation:
The strength in the figure is the figure shows where mitosis occurs in the cell cycle and the figure shows stem cell differentiation. Thus, option D is correct.
What is mitosis?
A cell prepares for cell division by replicating its chromosomes, segregating them, and creating two identical nuclei during the mitotic process. The cell's contents are typically evenly divided into two daughter cells with identical genomes after mitosis.
A cell copies each chromosome during mitosis and distributes one copy to each of its two daughter cells. With regard to our example of an instruction manual, it is crucial that each person receive a duplicate of each page.
Each chromosome must be delivered to each of our cells exactly once, without any errors, or the cells may have problems carrying out the genetic instructions.
Therefore, Mitosis occurs after G2 stage in the cell cycle.The strength in the figure is the figure shows where mitosis occurs in the cell cycle and the figure shows stem cell differentiation. Thus, option D is correct.
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pls help
When new bonds form, energy is __________.
released
disconnected
gone
stored
Answer:
When new bonds form, energy is 'released'
If the first nucleotide after the promoter on the bottom DNA strand is changed from C to T, what would the resulting nucleotide be on the mRNA
When the DNA's C is changed to T, the corresponding nucleotide on the mRNA strand will be A (adenine) to maintain the complementary base pairing.
Nucleotides encode genetic information in DNA. Due to complementary base pairing laws, DNA sequence alterations impact mRNA transcript nucleotides. If the first nucleotide following the promoter on the bottom DNA strand changes from C (cytosine) to T (thymine), the matching mRNA strand nucleotide becomes A.
Because C pairs with G (guanine) in DNA and RNA. T in DNA matches A in RNA owing to complementary pairing. The DNA sequence will influence the mRNA sequence during transcription, which may impact the protein synthesised during translation.
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explain the significance of chemical digestion!! marking brainliest please help
Answer:
Chemical digestion is a vital part of the digestive process. Without it, your body wouldn't be able to absorb nutrients from the foods you eat. While mechanical digestion involves physical movements, such as chewing and muscle contractions, chemical digestion uses enzymes to break down food.
I need the order please
4. Which areas seem to be most highly and quickly affected by a continued increase in
carbon emissions?
Answer: The atmosphere will be hit hardest by the increase in carbon. As the amount of carbon increases, it leads to increased warming of the atmosphere. Rising temperatures also increase the rate of evaporation, creating a more humid atmosphere and creating a virtuous cycle of warming.
This increase is beneficial as the Earth freezes due to the absence of carbon dioxide and other greenhouse gases in the air.
(sorry for my over-use of the the word increase)
which of the following is a way that human modification of limiting factors causes unbalance in ecosystems? a. habitat loss b. pollution c. climate changes d. all of the above
Answer:
D all of the above
Explanation:
The way that human modification of limiting factors causes imbalance in the ecosystem is : ( D ) All of the above
What are limiting factorsLimiting factors are factors contraining the growth of a population in an ecosystem. the modification by humans on these limiting factors causes an imbalance in the ecosytem which leads to loss of habitat, pollution and climate changes.
Hence we can conclude that The way that human modification of limiting factors causes imbalance in the ecosystem is : ( D ) All of the above.
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if cell x enters meiosis, and nondisjunction of one chromosome occurs in one of its daughter cells during meiosis ii, how will this affect the gametes at the completion of meiosis?
Answer:
c
Explanation:
Damage to the capillaries throughout the body can directly cause which problem?
A
Inability of the body to absorb nutrients from food
B
Inability of the body to send oxygen to tissues
C
Inability of the body to release food energy
D
Inability of the body to receive information from the legs
.
Answer:
B. Inability of the body to send oxygen to tussues
Respiration is a process where many chemical bonds inside the body break and release energy. This energy is used to perform various activities such as moving muscles.
Explain the energy transformation in this process.
A. Chemical energy from broken bonds is transformed into mechanical energy for muscles.
B. Mechanical energy from broken bonds is transformed into chemical energy for muscles.
C. Mechanical energy from broken bonds is transformed into electrical energy for muscles.
D. Heat energy from broken bonds is transformed into electrical energy for muscles.
Chemical energy from broken bonds is transformed into mechanical energy for muscles. The correct option is A.
What is chemical energy?Chemical energy is the energy held in atom as well as molecule bonding.
Chemical energy can be located in things like batteries, biomass, oil, natural gas, and coal.
For instance, when humans burn wood in a fireplace or gasoline in a vehicle's engine, chemical energy is transformed into thermal energy.
Chemical energy, such as that held in the bonds of atoms and molecules, is stored energy. As a result of a chemical process, this energy is released.
Many chemical bonds throughout the body break during respiration, releasing energy. The movement of muscles is one activity that uses this energy.
Broken bonds' chemical energy is converted into mechanical energy for muscles.
Thus, the correct option is A.
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freshwater fish excrete nitrogenous wastes as _____.
If a person has just returned from a trip abroad and is feeling sleeping during daylight hours. What hormone and gland may be impacting this disruption
Give an example in which you control temperature to influence a chemical change.
Answer:
100* farenhights
Explanation:
The main reproductive organ of the plant is the
Hello!!
.Stamen.
Structure. As a plant's reproductive part, a flower contains a stamen (male flower part) or pistil (female flower part), or both, plus accessory parts such as sepals, petals, and nectar glands (Figure 19). The stamen is the male reproductive organ. It consists of a pollen sac (anther) and a long supporting filament.
can you please give me brainliest
according to the hydrologic cycle, once precipitation has fallen on land, what paths might the water directly take?
Answer:
it either soaks into the ground, infiltration, flows over the surface as runoff, or immediately evaporates.
PLEASE HELP MEE
1.___-they speed up chemical reactions
2.___-they only catalyze specific reactions with specific substrates, like a lock and key.
3.___-slight changes in oH or temperature can cause then to stop working
Answer:
Catalyst
Enzymes
I don't know the other one, I'm sorry. Give the first two a try tho