I would like to ask you about genetic question.

Genetics as it applies to evolution, molecular biology, and medical aspects.

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kome0512
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I would like to ask you about genetic question.

Post by kome0512 » Sun Mar 15, 2009 4:10 am

In some types of wheat, color is caused by two sets of alleles. To produce a red color, both dominant alleles, R and B, are needed. White results from having both recessive alleles in the homozygous state, rrbb. A strain with a genotype of Rrbb is crossed with a strain of wheat with a genotype of rrBb.

What is the color of each of the parent strains?

What colors of wheat result from this cross, and what is the probability for each color?




I really need your help.

plasmodesmata11
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Post by plasmodesmata11 » Sun Mar 15, 2009 1:15 pm

I think you're missing information. The parents are both recessive for at least one set of alleles, which means there'd have to be codominance or something...

ScienceIsLife
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Re: I would like to ask you about genetic question.

Post by ScienceIsLife » Wed Mar 25, 2009 12:55 am

I don't know what the parent color would be, but I can figure out the result of the cross, and it's probability...Better than nothing, right?

So...The resulting colors would be Rrbb and RrBb and rrbb and rrBb. Each of the probabilities is 25% so all of the variations would have a ratio 1:1:1:1 for each of them.

Hope I helped...

Also, use a punnett square to figure them out...you could look it up on google or something and learn how to use them. It's really easy.

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