Answer: B. Any cells of the human body or placenta.
Explanation:
All types of cells in the human body can develop from pluripotent stem cells. Embryonic stem cells are also considered pluripotent.
It enters through the stoma.
Answer:
Explanation:
This gene is an X linked recessive trait, thus for it to be expressed in the females, it has to be in the homozygous recessive form (both X chromosomes will carry this trait dd). For males, only one copy which is in the recessive condition is needed for it to be expressed. Thus, a cross between
female male
XDXd x XDY
XD Y
XD XDXD XDY
Xd XDXd XdY
the offspring phenotype: normal females: 1/2
normal male: 1/4
deaf male: 1/4
