Starting with a cross between AA and aa, the proportion of heterozygotes in the F1 progeny will be ___.

When coal has reached it hardest, darkest form, it is called select one: 0 a. sub-bituminous b. lignite c. bituminous d. antrhacite next page

Scientists discover two populations of mice on either side of a major river. the two populations have almost identical genes but the mice from one side cannot breed with mice from the other. this is most likely because

To determine if a particular plant is homozygous or heterozygous, you would have to test cross with a