Answer:
The right answers are: XAXA and XAXa
Explanation:
A genetic disease is caused by an X-linked recessive inheritance when:
1. the gene present on the x linked chromosome, involved in the mutation.
2. The presence of both mutant alleles is necessary for the disease to be expressed in a female.
As per the image, the mother has always transferred a healthy allele (XA) so the answers are the genotypes carrying this allele.
Thus, the right answers are: XAXA and XAXa
Layer D is the youngest layer
Answer:
Monkeys have a prehensile tail that allows them to grab and hold onto tree branches - structural
Moose make mating calls to locate potential mates - behavioral
Whales are covered in a thick layer of blubber, insulating their bodies in cold ocean waters - structural
Humans have five toes on each foot to help them maintain balance - structural
Many birds migrate south for the winter in search of food - behavioral
Explanation:
The structural adaptations are adaptations that help the organisms to survive in their environment through development of physical traits that give them an advantage. Such adaptations are the thick layer of blubber of the whales, the five toes of the humans, prehensile tail of the monkeys, rotational toe of the clouded leopard, long of the giraffe etc. The behavioral adaptations are adaptations that help the organisms to survive in their environment, but they manifested through their actions, not their physical traits. Such adaptations are the mating calls of the moos, the migration of the birds in winter, the hibernation of the bears etc.
