In peas, the color yellow (Y) is dominant to the color green (y). How many of the four possible outcomes are yellow?

Biology

2 answers:

pantera1 [17]3 years ago

7 0

It depends on the situations. In the first situation, a Yy gene crosses with a Yy gene. 3 out of 4 of the outcomes have a capital Y in them, meaning that they have a dominant yellow allele. The bottom-right box has two lower-case y's, so it will be green. In the second situation, a YY gene crosses with a Yy gene. Here, all 4 out of 4 of the outcomes have at least one capital Y, so they will all be yellow. Hope that helps!

Anika [276]3 years ago

5 0

Because in order to be yellow the only 2 alleles you can have are the 2

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