The fact that the population of moths include both brown and green moths is an example of? a.) selection b.) overproduction c.) competition d.) variation e.) speciation

Why should the united state be concerned about air pollution in china?

In a classic experiment using pea shape, mendel conducted two separate genetic crosses. in the first cross the parent plants were “true breeding” for pea shape; one had round peas ( r )and the other had wrinkled (r). the first cross produced a filial 1 generation of all round peas. in the second cross, mendel bred plants from the filial 1 generation. this cross produced different results. out of approximately 1000 plants, about 75% were round and 25% were wrinkled.

If jane has the blood type ab and marries john who has type o blood what are the possible phenotypes of their first kid?