You cross two true-breeding parents (one with purple flowers and one with white flowers). all of the f1 progeny (offspring) have purple flowers. you grow and self-pollinate this f1 generation and collect 500 f2 progeny. how many purple flowers should be produced?

The correct answer is 375 purple flowers.

Step-by-step explanation:

If all the F1 generation from true-breeding parents are purple than the genotype would be heterozygous i.e., Pp and Pp. Here P indicates the dominant allele which produces purple flower and p indicates the recessive allele of white flower.

So if we will cross the F 1 generation than the genotype would be PP, Pp, Pp, pp. That means 3 out of 4 offspring would be purple because three genotypes out of four have dominant purple allele(P).

So if out of 4 flower 3 is purple than according to calculation out of 500 flower 375 offspring would be purple(3/4*500= 375). Therefore the correct answer is 375 purple flowers should be produced.

1 11/20 is greater than 1 1/2
~Why?~
-Because, half of 20 is 10. which is the same as 1/2 BUT, take a look at the 1 11/20. 11/20 is greater than 1/2 because 11/20 has one more than 1/2 Meaning 11 is one more than 10, which is half of 20.
~Hope this helped :)