Biology

posted by .

Suppose that black hamsters were found to be 70% of the population and the gray hamsters 30% of the population. Calculate the percentage of BB, Bb, and bb hamsters in the next generation.

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

• Biology -

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 -

BB (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

Similar Questions

1. math

james brought a few hamsters. for each day after the first day of the week, the hamsters at 20 grams of food than the previous day. the hamsters grew fast, finishing 1260 grams of food in the first week. how much food did the hamsters …
2. math

james brought a few hamsters. for each day after the first day of the week, the hamsters at 20 grams of food than the previous day. the hamsters grew fast, finishing 1260 grams of food in the first week. how much food did the hamsters …
3. math

michael has a pair of hamsters. The hamsters have two babies. the babies grow up and have wo babies of their own. write the number of baby hamsters from the statement aboe as a numeral expression using exponential notation. How many …
4. Math

Mr. Science has a pair of hamsters. The hamsters have 2 babies. Those babies grow up and have 2 babies of their own. Write the number of baby hamsters from the previous day as a numeral expression using exponential notation. How many …
5. math help!

Mr. Science has a pair of hamsters. The hamsters have 2 babies. Those babies grow up and have 2 babies of their own. Write the number of baby hamsters from the previous day as a numeral expression using exponential notation. How many …
6. MATH

you have a pair of newborn hamsters. each pair that is at least one month old produces a new pair every month. at this rate, you will have 178 hamsters at the end of what month?
7. Math

Sara has some fish, 2 birds, and 5 hamsters. She has 6 fewer hamsters than fish. How many fish does she have?
8. English

Which sentence is puncuated correctly? A.) Dogs cats and hamsters are animals, that you are unlikely to find in a zoo. B.) Dogs, cats, and hamsters are animals that you are unlikely to find in a zoo. C.) Dogs, cats and hamsters, are
9. Math

Sara has some fish,2 birds, and 5 hamsters.she has 6 fewer hamsters than fish. How many fish does she have?
10. math

Sara has some fish, 2 birds, and 5 hamsters. She has 6 fewer hamsters than fish. How many fish does she have?

More Similar Questions