Q9: human females can pass on either one of the their two x chromosomes to an offspring, but a dad
can pass on either an x chromosome or a y chromosome. so does a child really inherit 50% of all their
dna from mom and 50% from dad? explain:

yes a child inherits 50% of their DNA from mom and 50% from dad

Explanation:

Males are heterogametic as they produce two types of gametes one carrying an X and the other carrying Y chromosome. Females are homogametic because they produce one type of gamete carrying the X chromosomes. The chromosomes are inherited equally in the mendelian fashion. Genes on the chromosomes are therefore inherited equally with 50% coming from the mother and 50% coming from the father.

the correct answer is b