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3 years ago

Which of the following is a difference between the light-dependent and the light independent reactions of photosynthesis?

1 answer:

7 0

Answer:light dependent depends upon light to be successful also Hydrogen and oxygen are produced while dark reaction is against all also glucose is produced

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Which statement is incorrect regarding the genetic diversity of livestock?

Ksenya-84 [330]

Answer:

A. The use of only the most productive breeds improves genetic diversity.

8 0

3 years ago

In trout, Gene A affects body color and yellow color (allele a) is recessive to red. In a particular river system you find that

hjlf

Answer:

The frequency of the dominant A allele is 0,4 or 40%.

Explanation:

In this population, we have:

- "A" red body color Dominant

- "a" yellow doy color Recessive

So, individuals AA and Aa will be red and trouts aa will be yellow. In this case, 64% of the fish are red, so they are AA or Aa.

If the population is in Hardy-Weinberg equilibrium the following will be true:

$p^{2}+2pq+q^{2}=1$

Where:

$p^{2}=$ frequency of AA

$2pq=$ frequency of Aa

$q^{2}=$ frequency of aa

It is known that 64% of population is red, in other words:

$p^{2}+2pq=0,64$

Or AA+Aa=0,64

So, it is possible to find the value of $q^{2}$ (aa):

$p^{2}+2pq+q^{2}=1$

$(0,64)+q^{2}=1$

$q^{2}=1-0,64$ $q^{2}=0,36$

Now, there are two alleles in this population, therefore their frequencies will be:

$p+q=1$

So, from $q^{2}$ it is possible to find q and p:

$q=\sqrt{q^{2} }$

$q=\sqrt{0,36}$

$q=0,6$

And:

$p+q=1\\p=1-q\\p=1-0,6\\p=0,4$

7 0

3 years ago

Which phrase best describes osmosis? A. the process where DNA is created B. the movement of molecules through the cell membrane

kirza4 [7]

The answer is; D. The movement of water molecules from an area of high concentration to an area of low concentration

A is not correct because Osmosis does not create DNA.

B is incorrect because the movement of molecules through the cell membrane is called Passive Transport.

C is incorrect because the division process of the cell's cytoplasm is called Mitosis.

Thus brings us to D which is the correct answer because Osmosis is the spontaneous net movement of water across a semipermeable membrane from a region of low solute concentration to a more concentrated solution, up a concentration gradient.

6 0

3 years ago

Read 2 more answers

The adaptive response is a specific response that takes longer to activate and includes cells such as effector cells and antibod

AveGali [126]

Answer: b

Explanation:

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3 years ago

The air in the atmosphere is composed mostly of

Olenka [21]

Answer:

trees

Explanation:

6 0

3 years ago