Problem:
A particular X-linked gene is a recessive lethal that causes death and reabsorption of the embryo at an early stage. A heterozygous female married a man expressing the dominant trait.
Question: Define the alleles and show your work in answering the following questions:
a) What proportion of their offspring would be expected to be females?
b) What proportion of the offspring would be expected to be carriers of the gene?
Could someone explain this to me?