D. A perfect flower is basically a male flower and a female flower because it has both male and female parts
Answer:
No, Presence of different alleles for an X-linked gene is required to test the Lyon hypothesis.
Explanation:
According to the Lyon hypothesis, to compensate the dosage of X linked genes in males and females of mammals, one X chromosome in all the cells of a female mammal is inactivated and the presence of the gene on the other X chromosome is expressed.
Inactivation of the X chromosome is a random process, that is, either maternal or paternal X chromosome may be inactivated during early embryological development in females.
To test the Lyon hypothesis, the expression of alternative alleles of an X-linked gene in the cells of a female mammal is studied. Given that the human female is homozygous for an X-linked gene, all of her cells would express the same allele for the gene, and the Lyon hypothesis can not be tested.
Escape is running away, avoidance is keeping away.
That should be the word "ambulatory". It's used when a patient is not confined to bed/is able to walk.
The answer is E) All of the above.
