Answer:
B.The sperm and egg.
<h3>....Hope it helps you.....</h3>
I think I understand even without the picture. I'll add a picture of the Punnett Square filled in, but what you're crossing is
Tt x tt (heterozygous crossed with a homozygous recessive)
The ratio you get in the end is 2 heterozygous (Tt) and 2 homozygous (tt) offspring, so the ratio is 1:1.
So the percentage of offspring that are homozygous recessive is 50%.
Most populations don’t grow exponentially since there is regulations considering CBR & CDR, as well as NIR in the whole population. There are push factors as well a limited growth.
True, most cells are to small to see with the naked eye