Crossing-over helps meiosis increase genetic diversity. On what structures does crossing-over occur and how does it increase diversity ?
Explanation:
crossing over is the exchange of chromosome segment between non sister chromatids in meiosis full stop crossing over create new combination of gene in the gamates that are not found in either parent contributing to genetic diversity.
The following quote makes an important distinction between renewable and nonrenewable resources.
It is important that the United States move with all deliberate speed to develop and get into usage alternative fuels that will allow us to end our dependence on foreign oil. —Congressman Virgil Goode
A. What are the renewable resources being referred to in this quote?
B. What is the nonrenewable resource being referred to in this quote?
C. Why might it be important to move from nonrenewable resources to renewable resources?
Which statement regarding polymers is TRUE?
1. Polymers have only a few uses.
2. All polymers are made entirely of carbon and hydrogen.
3.Many polymers do not decompose and recycling them can be difficult.
4. Polymers are made by separating crude oil during fractional distillation.
2. How do your respiratory and circulatory systems attempt to maintain homeostasis during exercise?
A. Your body produces more red blood cells to help provide energy to cells.
B. Your lungs produce more oxygen which is then delivered to the cells through the blood.
C. You experience an increase in blood flow which provides nutrients to cells to increase energy and
remove wastes.
D. You experience an increase in breathing rate to obtain more oxygen which is delivered to cells
through the bloodstream.
What are 2 things that two male polar bears might compete for in an ecosystem?
Answer:
Food and habitat resources
Explanation:
Ecosystems are communities that animals and organisms fight and survive in.
Answer:
bro ide man i can't even tell you man iExplanation:
Which air mass would produce warm, humid weather in the summer?
Answer: maritime tropical air mass
Explanation: The oceanic tropical air mass regularly creates a warm, muggy climate in the mid-year. The air mass begins from over the warm water of the jungles and Gulf of Mexico, where warmth and dampness ordinarily move to the air above from the water beneath.
Which of the following approaches is the most likely first method an apple grower would use in developing an orchard of short trees producing apples from a naturally tall parent stock?
a. reduce nutrients in the soil to inhibit growth
b. prune the trees severely to maintain a short height
c. graft buds from the tall parent stock onto the dwarf-tree rootstock
d. breed trees from the shortest plants in the dwarf-tree rootstock
Answer:
C
Explanation:
In the chart above, which of the sequences describes a negative consequence of deforestation?
A. Sequence A
B. Sequence B
C. Sequence C
D. Sequence D
Answer:
C. Sequence C
Explanation:
Deforestation means cutting down of trees so it will lead to soil erosion and flooding
Answer:
C
Explanation:
Why don't negative mutations usually increase in frequency in populations?
Answer:
Within a population, each individual mutation is extremely rare when it first occurs; often there is just one copy of it in the gene pool of an entire species. But huge numbers of mutations may occur every generation in the species as a whole.
Works Cited:
Oct 29, 2007
Https://www.scientificamerican.com
Explanation:
Hope this helps!
Inherited traits are:
A. Dependent on diet
B. Acquired during an organism's life
C. Free of mutations
D. Passed on from parent to offspring
How does a fire help grasslands? Choose all that apply.
A. keeps trees from overtaking the grasses
B.preserve biodiversity
C.helps contain only coarse grass
D.all of the above
Answer:
b
preserve biodiversity
describe the four different types of air masses and how do they form
Answer:
arctic, tropical, polar and equatorial.
Explanation:
Arctic air masses form in the Arctic region and are cold. Tropical air masses form in low-latitude areas and are moderately warm. Polar air masses take shape in high-latitude regions and are cold. Equatorial air masses develop near the Equator, and are warm.
5. A local gardener puts fertilizer on his plants. The plants are
very healthy, but what is a negative effect the fertilizers have
on the environment?
A. Excess fertilizer is washed into local streams,
causing an overgrowth of algae.
B. The fertilizer builds up in the soil and causes
more weeds to grow over time.
C. The fertilizer evaporates, causing acid rain to
fall on the neighborhood.
D. The fertilizer pollutes the groundwater
causing an overabundance of producers.
Answer:
A. Excess fertilizer is washed into local streams,
causing an overgrowth of algae.
Explanation:
Mr. Harris mows his lawn twice each month. He claims that it is better to leave the clippings on the ground. Which long term effect will this MOST likely have on his lawn?
Answer:
It will provide the lawn with needed nutrients
Explanation:
MULTIPLE-SELECT QUESTION: CHOOSE TWO
CORRECT ANSWERS
STRUCTURES AND FUNCTIONS
A. There is not enough information to build the cladogram
B. The frog is placed in Position A on the cladogram above.
C. The pig is placed in Position B on the cladogram above.
D. The gorilla is placed in Position D on the cladogram above.
Answer:
B and D
Explanation:
What are antibiotics and why are they useful?
Explanation:
An antibody is a protein produced by the body's immune system when it detects harmful substances, called antigens. Examples of antigens include microorganisms (bacteria, fungi, parasites, and viruses) and chemicals. ... Each type of antibody is unique and defends the body against one specific type of antigen.
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how many grams of nitrogen-16 will be left from a 24 g sample after 17.2 seconds of its half-life is 4.3 seconds
Answer:
Explanation:
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What is the first part of the plant to emerge?
A roots
B flowers
C stems
D leaves
HELP me out
Answer:
I think the answer is A: Roots.
the answer to your question is roots
PLEASE HURRY
Based on this graph
What is the approximate age of the dust sample?
A. Between 4 and 5 billion years old
B. Between 6 and 7 billion
years old
C. Between 24 and 25 years old
D. Between 32 and 33 billion years old
Answer:
B
Explanation:
Answer:
b
Explanation:
There are 300 falcons living in a forest at the beginning of 2013. Every year, there are 50 falcons born and 30 falcons that die.
What is the the population growth rate?
Answer:
The growth rate is 20+ Falcons are born per year.
Explanation:
Hope this helps!
Answer:
Population in the world is currently (2020) growing at a rate of around 1.05% per year (down from 1.08% in 2019, 1.10% in 2018, and 1.12% in 2017). The current average population increase is estimated at 81 million people per year. Annual growth rate reached its peak in the late 1960s, when it was at around 2%.
Explanation:
Compared to ALL of the other planets in our solar system, how would you describe Jupiter? A) the biggest planet B) about the same size as Earth C) the planet closest to the Earth D) the planet farthest from the Sun
Answer:
option A
Explanation:
the biggest planet
Answer:
A) the biggest planet in our solar system.
What is the purpose of mitosis for our bodies?
Answer:
Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell? divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells
Explanation:
Someone help me plsssss
Answer:
C part is the correct answer
What are the three involved elements in Photosynthesis?
Answer:
Carbon dioxide , water and water
It is mistakenly believed that the rapid evolutionary changes of punctuated equilibrium are the result of some mechanism of evolution other than natural selection, thus seeming to undermine evolutionary theory. This belief is mistaken because:
Answer: Natural selection can be defined as the differential survival and reproduction of members of the population of a species that have suitable traits to survive in a population of species.
Explanation:
The punctuated changes in the population of species have been found inordinately faster in the geological time scale, but changes per-generation have been relatively slow. Also, the rate of evolution in such a population is also slow. The punctuated changes in the population are because of evolution but the per-generation changes are the outcomes of the natural selection, in which only the beneficial traits are passed from one generation to another.
when fossil fuels and biofuels are burned, the stored energy in what substance is related to generate electricity?
a) neutrons
b) geothermal heat
c) sunlight
d) organic matter
Answer:
organic matter
Explanation:
I had it on my test; the other person's answer is incorrect.
When fossil fuels and biofuels are burned, the stored energy in organic matter is related to generate electricity.
What is organic matter?Anything which actually contains carbon compounds made by living things is considered to be organic matter.
What is fossil fuels?
An extracted or consumed fossil fuel would be a hydrocarbon-containing substance that naturally originated in the earth's crust out of remains of extinct plants and animals.
Therefore, when fossil fuels and biofuels are burned, the stored energy in organic matter is related to generate electricity.
To know more about fossil fuels and organic matter
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HELP PLEASE!!!!!!!
I really need help
Answer:
Hi, there the answer is
C.It is a frameshift mutation that changes many amino acids.
Explanation:
Due to the triplet nature of gene expression by codons, the insertion of the single Adenine nucleotide will disrupt the reading frame of the gene (frameshift mutation), such that it is no longer evenly divisible by three.
Thus, resulting in a completely different translated protein from the original.
Hope this helps :)
The DNA sequence is this: GTACTA. Write the mRNA AND the amino acids.
Answer: mRNA: ACU GAU Amino Acids: THR, ASP
Explanation:
it really would help me alot if someone help me
Answer:
I believe the answer is landslides
When tulips bloom, they are attempting to pollinate using the process of meiosis which part of tulip is related to meiosis? Why do tulips need to under go meiosis?
Answer:
The correct answer is - pistil and stamen.
Explanation:
Meiosis is the type of cell division that takes place only to produce gametes that are megaspore and microspore, in sex cells of the flowering plant. In tulip and other similar flowering plants have ovary at the base of the pistil that contains and produced megaspore (female spores) by meiosis.
Similarly, anthers in the stamen of the tulip flower produce male spores called microspores and contain. Meiosis is essential in sexual reproduction to ensure that each cell has the correct number of chromosomes and responsible for recombination.
During pollination Tulip under meiosis in other to produce the required gametes needed for sexual reproduction. The parts of the Tulip that contains the megaspore and microspore gametes are :
Pistil : The ovary that produces and stores the female spores via meiosis is located at the base Stamen : The anthers which produces the male spores via meiosis is located at the stamen.Also Tulips undergo meiosis to ensure that the cells have the accurate number of chromosomes that is to be used for recombination.
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