Biology help please..?

I don't understand anything about biology! It's my worst subject!

If I think about it I'm not at all good at predicting things and biology, well, let's just say I do not want to be a biologist someday. :o) Please help me.



Snapdragons are popular garden plants that produce brightly colored flowers. When a plant that is homozygous for white flowers is crossed with a plant that is homozygous for red flowers, all offspring are pink. Snapdragons are an example of a plant that exhibits an inheritance pattern called incomplete dominance.



1. Determine the genotype of each parent plant and write them below. Use W to indicate the allele for white flowers and w to indicate the allele for red flowers.



Genotype of homozygous parent plant with white flowers:

Genotype of homozygous parent plant with red flowers:



2. Next, think about the gametes each parent plant will produce. List the alleles in each gamete.

Parent plant with red flowers:

Gamete 1:

Gamete 2:

Gamete 3:

Gamete 4:

Parent plant with white flowers:

Gamete 1:

Gamete 2:

Gamete 3:

Gamete 4:



Thanks so much in advance for all your help.
Biology help please..?
Sorry you hate biology! I'm a biochemist, so I really like it.



Anyway: a plant with white flowers has to be WW, since the presence of a "w" (small letter) allele would make the plant pink. Similarly, for the red one, it has to be ww since the presence of a "W" (capital letter) allele would make *that* one pink. Think of this as a plant with two paint buckets that get mixed together when flowers form. A plant with two white buckets will be white; one with two reds will be red; but one with a white and a red would end up pink.



Now the gametes from the white (WW) plant can only be W, so all four will be W. Same thing for the red one--the only allele the plant has is w, so all four gametes will be w.
Reply:following link is about basics of mendelian genetics

it may help

http://anthro.palomar.edu/mendel/mendel_...
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