A Basalt covered in sediment
Answer:
No
Explanation:
One of the parents would have to have dd in order to have the disorder, since it says the disorder is found in those with two recessive alleles. The parents had a kid with the genotype DD. This means both parents had at least 1 D. Therefore, neither parent's genotype could be dd.
A gamete is a mature haploid. Gametes are known to have homologous chromosome. This will make the correct answer D.