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velikii [3]
3 years ago
7

Sexual reproduction contributes to genetic diversity by allowing

Biology
2 answers:
I am Lyosha [343]3 years ago
7 0

Answer:

Sexual reproduction contributes to genetic diversity by allowing?

genes from two parents to be mixed and remixed before being passed to offspring.

Explanation:

During fertilization after sexual reproduction, there is genetic mixing from both parents which result into genetic diversity and such gene is passed across to the offspring

tiny-mole [99]3 years ago
3 0

Answer:

the answer is D

Explanation:

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Which of the following is an example of natural selection? During an especially cold winter, brown squirrels that had thick coat
s2008m [1.1K]

The correct anser is option (A) During an especially cold winter, brown squirrels that had thick coats survived at higher rates than brown squirrels whose coats were not as thick.

Natural selection is a mechanism of evolution proposed by Charles Darwin. It is the differential survival and reproduction of individual due to the difference in the phenotype. Over time, this process results in populations which are better adapted to their environment as they tend to survive and produce new offspring.  The brown squirrels with thick coat survive at a higher rate than the brown sqirrels without the thick coat. Thick coat is a adaptation for survival in cold winters which are chosen over the other and allowed to reproduce.


5 0
3 years ago
In the what division of meiosis, chromosome pairs line up and then separate?
Anvisha [2.4K]
<span>metaphase i think is the correct answer</span>
8 0
2 years ago
Which organ is crucial for expelling cellular carbon dioxide waste?
Pavel [41]
<span>The lungs are the organs that are most crucial in expelling cellular carbon dioxide waste. Lungs are the most important organ of the respiratory system. They excrete these wastes through the process of diffusion and exhalation. Without the proper excretion of carbon dioxide by the lungs, the blood will be left without oxygen and might be toxic to course through the bloodstream. The lungs are responsible for converting unoxygenated blood into oxygenated blood. Through this process carbon dioxide is expelled as the by-product.</span>
8 0
3 years ago
The ATP yield for a molecule depends on where it enters glycolysis or the citric acid cycle. The yield can be compared to the ne
Andru [333]

Answer:

a) The net ATP yield from fructose 1,6‑bisphosphate is 32 ATP

b) The net ATP yield from galactose is 30 ATP

c) The net ATP yield from dihydroxyacetone phosphate is 16 ATP

d) The net ATP yield from pyruvate is 12.5 ATP

e) The net ATP yield from lactate is 14 ATP

f) The net ATP yield from phosphoenolpyruvate is 13.5 ATP

Explanation:

a) In this case, 2 ATP molecules are not used for the phosphorylation of glucose for the production of fructose bisphosphate 1.6, thus, the net ATP yield is 32 ATP.

b) Galactose is converted to glucose-1-phosphate through reactions that lead to phosphorylation. Glucose-1-phosphate is transformed into glucose-6-phosphate by the enzyme phosphoglucomutase. Later it is used in glycolysis, thus, the net ATP yield is 30 ATP.

c) The fructose 1,6 bisphosphate is decomposed in glyceraldehyde-3-phosphate and dihydroxyacetone phosphate. Dihydroxyacetone phosphate is isomerized to glyceraldehyde -3-phosphate. ATP performance is (2.5+2.5+11) = 16 ATP

d) Pyruvate is decarboxylated oxidatively to produce acetyl-CoA. ATP yields are:

Glycolysis = 0

Oxidative decarboxylation = 2.5 ATP

TCA cycle = 10 ATP

The net yield is 2.5 + 10 = 12.5 ATP

e) Lactate is oxidized to pyruvate by the enzyme lactate dehydrogenase with a reduction of NAD. Pyruvate is brought into the mitochondria, where it is decarboxylated oxidatively to produce acetyl-CoA. If 1.5 ATP is assumed for cytosolic NADH, therefore 1.5 is produced. So, the net yield is: 12.5 + 1.5 = 14

f) Phosphoenolpyruvate is converted to pyruvate by ATP production through phosphorylation. ATP yield is as follows:

Glycolysis = 1

Oxidative decarboxylation = 2.5 ATP

TCA cycle = 10 ATP

The net yield is 1 + 2.5 + 10 = 13.5 ATP

6 0
3 years ago
What is the net charge of the structure in the figure below?
Brilliant_brown [7]

Question:- what is the net charge of the structure in the figure below?

A. 1-

B. 1+

C. 2+

D. 2-

Answer

there are 3 protons (+ve charge) and 2 electrons (-ve charges )

so net charge is positive one

8 0
2 years ago
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