Question

In a moth population of 40 organisms the distribution of genotypes were found to be the...

In a moth population of 40 organisms the distribution of genotypes were found to be the following: 20 homozygous for black (C C ), 10 gray heterozygous ( C C ) and 10 homozygous for white (C C ). Find the frequency of gray alleles in this population.

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Given that, in a population of 40 moths, 20 are homozygous for black (C C ), 10 are gray heterozygous ( C C ) and 10 homozygous for white (C C). This can be represented as :

Homozygous black, CbCb = 20

Heterozygous gray,CCg = 10

Homozygous white, CwCw = 20

We need to calculate the frequency of gray alleles, Cg.

Solution:

The frequency of gray alleles can be determined as:

p = Number of Gray alleles/ Total alleles in the population

The gray alleles are present only in the heterozygous individuals. Since there are 10 such individuals, thus we have 10 gray alleles. Also, for a total population of 40, total alleles in the population will be, 2 * 40, that is, 80 alleles.

Hence,

p=10/80

p=0.125

Thus, the frequency of gray alleles in this population is 0.125

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In a population of 500 sheep in Hardy-Weinberg equilibrium, 80 individuals have black wool while the...
In a population of 500 sheep in Hardy-Weinberg equilibrium, 80 individuals have black wool while the remainder have white wool. White wool (W) allele dominant over black wool (w) allele. a) Please calculate the frequency of homozygous dominant, homozygous recessive, and heterozygous individuals in this population. b)Please calculate the frequencies of black wool alleles and white wool alleles in this population
The genotypes of a population of 500 cattle were tested. These analyses showed that Red short-horned...
The genotypes of a population of 500 cattle were tested. These analyses showed that Red short-horned cattle are homozygous for the red allele (R), White cattle are homozygous for the white allele (W), and roan cattle are heterozygotes (RW). 36% of the cattle are red, 16% are white, and 48% are roan cattle. What are the frequencies for the R and W alleles?
A moth census on Wooded Island counted 100 black (BB) moths, 40 gray (Bb) and 60...
A moth census on Wooded Island counted 100 black (BB) moths, 40 gray (Bb) and 60 white (bb) moths. What are the genotypic frequencies? What are the allelic frequencies? Is the population in Hardy-Weinberg equilibrium?    Phenylketonuria is a severe form of mental retardation due to a rare autosomal recessive allele. About 1 in 10,000 newborn Caucasians are affected with the disease. Calculate the frequency of carriers (i.e., heterozygotes).   Note what assumption you are making. A study on blood types in...
For gene B in a population of moths, the following genotypes were found in the following...
For gene B in a population of moths, the following genotypes were found in the following frequencies. 45 BB:347 Bb:8bb What is the allele frequency of the B allele?
If 10 Typica moth (dd) and 90 Carbonaria moth (Dd, DD) were released into a polluted...
If 10 Typica moth (dd) and 90 Carbonaria moth (Dd, DD) were released into a polluted forest what would happen over several generations? Check all that apply: A) The Typica moth population would decline. B) The Carbonaria moth population would have a reproductive advantage in the polluted forest. C) The Carbonaria moth would be easily spotted by predators on the dark polluted trees. D) The Carbonaria moth population would decline. E) The recessive allele frequency would decrease each generation.
16. One summer a group of scientists were studying fur color in a population of rabbits...
16. One summer a group of scientists were studying fur color in a population of rabbits that had either brown or white fur, where the brown fur was caused by a dominant allele (B). They noticed that white rabbits stood out more on the forest floor and where more likely to be captured by hawks in the area. In the population, the scientists counted 210 homozygous dominant rabbits, 190 heterozygous rabbits and 100 homozygous recessive rabbits. What is the dominant...
You identify a population of rats on an island. Their coat color is controlled by a...
You identify a population of rats on an island. Their coat color is controlled by a single gene: BB rats are black, Bb rats are gray, and bb rats are white. You take a census of the population and record the following numbers of rats Black 150 Gray 120 White 30 a) What are the frequencies of the two alleles? b) What are the Hardy-Weinberg equilibrium frequencies for these three phenotypes? c) A heat wave hits the island. All 150...
1. Wool color in sheep is under the control of an autosomal gene which segregates two...
1. Wool color in sheep is under the control of an autosomal gene which segregates two alleles: B,confers white wool, while the recessive allele b specifies black wool. A population of sheep under Hardy-Weinberg equilibrium was observed: Of 325 individuals, 194 have white wool and 131 have black wool. . What is the frequency of the B allele? b. How many of the 194 white sheep are expected to be heterozygous? 2. Cat coat color is controlled by an X-linked...
In a pine's life cycle, hybrid "1" pine tree the needles were found to have alleles...
In a pine's life cycle, hybrid "1" pine tree the needles were found to have alleles L1 (heterozygous) producing long needles. In a hybrid "2" pine tree, the needles were found to have the alleles II (homozygous recessive) producing short needles. If a pollen from hybrid "1" pollinated hybrid "2" to form a hybrid "3" plant which about 50% were long needle and 50% were short needle. Give the genotypes for the following structures found in the life cycles of...
1) In cattle, there is no dominance between the alleles for red coat (W) and white...
1) In cattle, there is no dominance between the alleles for red coat (W) and white coat (c). The heterozygote is intermediate or "roan" in color. a) Give the genotypic and phenotypic ratios to be expected following a mating between two roan animals. b) What are the expected genotypic and phenotypic ratios from a cross between a roan animal and a white one? 2) In cattle, the hornless condition (H) is dominant to that for the possession of horns (h)....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT