Answer:
The genotype of the Dad must be X^AY because that's the only possible genotype for a normal male.
The genotype of the mom must be X^AX^a because that's the only way to have a colorblind son while being a normal mom. The colorblind son gets a Y from his dad and X^a from his mom.
The genotype ratio among the children must be 25% heterozygous dominant, 50% homozygous dominant, and 25% heterozygous recessive.
The phenotype ratio among the children must be 75% normal and 25% colorblind.
Answer:
the two atrioventricular valves
Actually, you are wrong and correct. Yes, fungi are decomposers and help make an ecosystem healthy. But bacteria are helpful in many ways, in which we would die without some bacteria. Bacteria can denitrofic water to make it safe to drink, and our immune system is consisted of many bacteriums. The answer is D. All of the above. Have a good day :D
