F.8.4a - an allele carried on a y chromosome will affect

a.) all of the female offspring.

b.) some of the male and female offspring.

c.) the male offspring.

d.) none of the offspring.

C.) the male offspring.

Explanation:

Only males have XY chromosomes so therefore it is impossible that a female is affected by a Y allele.

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oxygen = 21% of the atmosphere

nitrogen = 78%

carbon dioxide = 0.1%

argon =0.934%