Correct answer: D
A pollen is where male gametes are produced and so the number of chromosomes, as we are talking about gametes, is n. This means that the grain of pollen will only have a copy of each gene, and therefore only one allele for each gene - one S, and one T or t. So, the possible combinations are ST and St.
Answer:
regulates which materials enter and leave the cell
Answer:
i would say the gravitational pull of the sun, it could also be the x-axis.
This is false the most classified animal groups are mammals and birds. The third most classified animal group is the fish.
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