Hemophilia is an X-linked recessive trait.

A non-hemophiliac father and a hemophiliac mother have a son.

What is the percent chance that the son will be a hemophiliac?

Choose 1

(Choice A)
A
0%

(Choice B)
B
25%

(Choice C)
C
50%

(Choice D)
D
100%

There is a 25 percent chance that the son will be a hemophiliac

Explanation:

answer: - few nutrients

high pressure

low temperatures

explanation: 1. few nutrients:   open-ocean zone is located way far from the land, which is the main source of the essential nutrients.2. high pressure: pressure increases by 1 atmosphere for every 10 meters increase in depth.3. ample sunlight: a large fraction of the sunlight is reflected back to the atmosphere from the sea surface. 4. varying salinity: below the thermocline, the water is isolated from the atmosphere so the salinity remains stable over the year.5. low temperatures:   the temperature of open-ocean zone ranges from a low of -2°c to an average of 17°c