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.
The answer is microspore and megaspore. hope that helped
6 is true 7 is true 8 is false 9 is true 10 is false
The answer is pollution, because solar energy is costly, difficult to maintain, and fairly complex.
