Is the Y chromosome an accurate indicator of a persons external sex? Paragraph explanation would be appreciated. :)

In natural selection, what is actually “selected? ” a) alleles are directly selected b) genotypes are directly selected c) phenotypes are directly selected d) entire populations are directly selected

What is the statement plant growth is affected by the color light

Paint and solvents pose no potential hazard to human health. select the best answer from the choices provided t f