<span>Ans : BbNn x bbnn - gives:
In a ratio of 1;1:1:1
BbNn - 1/4 black normal
Bbnn - 1/4 black blind
bbNn - 1/4 brown normal
bbnn - 1/4 brown blind</span>
<span>B) Earth revolving around the sun and the sun's light being reflected off the moon because the moon orbits earth and earth orbits the sun so the sun lights the moon
Signed by, Virtuoso Sargedog
</span>
Answer:
d. all of the above
Explanation:
The ectoderm, neural crest and underlying mesoderm have been implicated in the induction of the neural tissue.
<span>A CD4 molecule on a lymphocyte interacts with an MHC-II molecule on an antigen-presenting cell.</span>