What are the answers to these questions? Please explain. 4. Red-green color blin

Question

What are the answers to these questions? Please explain.

4. Red-green color blindness is a sex-linked recessive trait in humans. If a non-carrier female (homozygous for the nonmutant allele) mated with an affected man, what would be the expected outcome(s)? O None of the sons would be affected. O None of the offspring (sons or daughters) would be color blind. O Half the sons would be color blind O None of the daughters would be affected. O Half of the sons would be color blind, and none of the daughters would be color blind.

Explanation / Answer

4. None of the sons would be affected.

As the female is carrying nonmutant allele and X- chromosome of male progeny(son) is coming from mother only.

5. the distance between genes resulting in 1% recombinant offspring.

The distance between the genes (map units) is equal to the percentage of crossing-over events that occurs between different alleles. In fact, we can define one genetic map unit (m.u.) as that distance between genes for which one product of meiosis in 100 is recombinant. Put another way, a recombinant frequency (RF) of 0.01 (1 percent) is defined as 1 m.u.

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