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March 3, 2015

March 3, 2015

Posted by **Aria** on Monday, March 26, 2012 at 12:09am.

- I don't know how to calculate the percentage of the genotypes.

- Biology -
**Steve**, Monday, March 26, 2012 at 12:38pma google search showed:

This is a Hardy-Weinberg type question.

The population is composed of RR, Rr, and rr individuals.

To figure out genotypic frequencies, it's a matter of multiplying out the frequencies.

Hardy-Weinberg says that the population frequencies are RR: 2Rr : rr or RxR: 2 x R x r: r x r.

You have .7*.7:2*.7*.3:.3*.3

= .49 : .42 : .09

Not sure how this relates to the frequencies in the next generation . . .

- Biology -
**ramannachowdary**, Monday, April 2, 2012 at 2:16pmBB (Homozygous dominent) 25% and Bb (heterozygous dominent) 50% and bb(homozygous recessive.so phenotypic ratio is 3:1 and genotypic ratio is 1:2:1

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