Biology/Science Category QUESTION?

[Hanna J]

How is variation introduced into populations that reproduce asexually?

At the present time there was no such thing as an all-blue tulip. The first one found will be quite valuable. How might a tulip breeder increase the chances of finding a blue tulip?

If base pairs in DNA molecules consist only of adenine-thymine or cytosine-guanine, what must be the ratio of the amount of adenine to thymine? of the amount of cytosine to guanine? of the amount of adenine to cytosine?

In garden peas, tall vine is dominant and short vine is recessive. If a homozygous tall plant is crossed with a homozygous short plant, what genotypes are possible in the F1 generation?

16. In the following cases, Z stand for a certain dominant trait and z stands for the recessive trait. Identify the ratios of genotypes that you would expect from the following crosses:
ZZ x zz
Zz x Zz
Zz x zz
Zz x ZZ