Since the rotifers develop from eggs, but asexually, what can you predict?

Why did Mendel continue some of his experiments to the F2 or F3 generation?

In cattle, roan coat color (mixed red and white hairs) occurs in the heterozygous (Rr) offspring of red (RR) and white (rr) homozygotes. Which of the following crosses would produce offspring in the ratio of 1 red:2 roan:1 white?