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krok68 [10]
3 years ago
12

The only difference in the chemical structure of DNA between various organisms is

Biology
1 answer:
Alchen [17]3 years ago
6 0

Answer:

the backbone of DNA contains deoxyribose, where as the backbone of RNA contains ribose.

Explanation:

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Which of the following is a disadvantage of sexual reproduction?
Liula [17]
Answer: <span>A) Slow to repopulate

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Genetic variation is an advantage of sexual reproduction. It increases survival and the ability to adapt in a species. Species with genetic variation can respond better to environment changes, since the genetic variability allows some to be immune to disease or adapt better to a change, and live to reproduce.

Slow to repopulate is a disadvantage because the species cannot recover quickly after a large disaster. It also means they cannot adapt as quickly to an environmental change.</span>
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3 years ago
the sodium-potassium pump uses energy from atp to move sodium ions out of the cell, and potassium ions into the cell. this is an
vlada-n [284]

Answer:

active transport

Explanation:

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3 years ago
Population A consists of 100 hens that are fully isogenic and that are reared in a uniform environment. The average weight of th
qaws [65]

Answer:

a. the environmental variance (VE) = 3.5 g ²

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Explanation:

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b.When studying population B, comparing it without environmental changes with respect to population A, we found that its total variance (VT) = 21.0g ²

We generate the following formula with the data obtained previously to find the genetic variation

VT = VE + VG

then VG = VT-VE

replacing data:

VG = 21.0 - 3.5 = 17.5 g ² for population

c. Regarding the heritability of broad sense (H2) in population B, we can reach the result with the data previously obtained like this:

H2 = VG / VT = 17.5 / 21.0 = 0.83

7 0
3 years ago
1. What happens to the cell membrane during endocytosis?
Yanka [14]

Answer:

The cell membrane will fold over a substance or particle until it becomes completely enclosed by the membrane

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Endocytosis is when a substance or particle from the outside is captured and engulfed by the cell membrane until it is in the inside.

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