Question
Suppose that gene b is sex-linked, recessive, and lethal. A man marries a woman who is heterozygous for this gene. If this couple had many normal children, what would be he predicted sex ratio of these children?
Answers
bobpursley
Lethal when? If lethal after many years, the sex ratio is 1:1. If lethal in the womb, then one boy for every two girls, as the other boys died in the womb.
Samantha
what would be the punnet square
i can it do it myself but what about genotype and phenotype
i can it do it myself but what about genotype and phenotype
PsyDAG
Woman = Bb
Man = By, since the lethal gene is sex-linked, it is not on the y chromosome. From this, you should be able to do the Punnet square to get the genotypes. From them, you can figure the phenotypes.
Man = By, since the lethal gene is sex-linked, it is not on the y chromosome. From this, you should be able to do the Punnet square to get the genotypes. From them, you can figure the phenotypes.