Campbell Biology: Custom Edition
18th Edition
ISBN: 9781323717271
Author: Urry, Cain, Wasserman, Minorsky, Reece
Publisher: PEARSON C
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Textbook Question
Chapter 23.2, Problem 1CC
A population has 700 individuals, 85 of genotype AA, 320 of genotype Aa, and 295 of genotype aa. What are the 1 requendes of alleles A and a?
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Check out a sample textbook solutionStudents have asked these similar questions
There are two types of alleles:
Type B1 and Type B2
(In total there are 10)
Type B1 has 6
Type B2 has 4
Question:
What is the probability of an individual in the offspring generation being homozygous [p^2] for B1?
What is the probability of an individual in the offspring generation being homozygous [q^2] for B2?
What is the probability of an individual in the offspring gen being heterozygous[2pq]?
What is the frequency of the heterozygous genotype if the homozygous genotype frequencies are 0.1385 (BB) and 0.5897 (bb)?
For the purpose of the assignment, we will refer to XY individuals as male and XX individuals as
female.
In humans, colorblindness (b) is an example of an X-linked recessive trait. In this problem, a male with
colorblindness XbY marries a female who is not colorblind but is a carrier of the colorblindness allele
(XXb). Using a Punnett square, determine the genotypic and phenotypic probabilities (as
percentages) for their potential offspring. Give the percentages in numbers, without the percent
sign, for each genotype and phenotype.
Genotypes
XX
Xxb
xbxb
XY
xby
Phenotypes
Consider females (XX) individuals only. In the two questions below, I am asking for the % of females,
not % of all people.
What is the % of females who are not colorblind?
What is the% of females who are colorblind?
Now consider makes (XX) individuals only. In the two questions below, I am asking for the % of
Chapter 23 Solutions
Campbell Biology: Custom Edition
Ch. 23.1 - Explain why genetic Variation within a population...Ch. 23.1 - Ot all the mutations that occur in a population,...Ch. 23.1 - MAKE CONNECTIONS If a population stopped...Ch. 23.2 - A population has 700 individuals, 85 of genotype...Ch. 23.2 - The frequency of allele a is 0.45 for a population...Ch. 23.2 - WHAT IF? A locus that affects susceptibility to a...Ch. 23.3 - In what sense is natural selection more...Ch. 23.3 - Distinguish genetic draft from gene flow in terms...Ch. 23.3 - WH AT IF? Suppose two plant populations exchange...Ch. 23.4 - What is the relative fitness of a sterile mule?...
Ch. 23.4 - Explain why natural selection is the only...Ch. 23.4 - Prob. 3CCCh. 23 - Typically. most of the nucleotide variabillity...Ch. 23 - Is it circular reasoning to calculate p ond q from...Ch. 23 - Would two small, geographically isolated...Ch. 23 - How might secondary sex characteristics in males...Ch. 23 - Natural selection changes allele frequencies...Ch. 23 - Prob. 2TYUCh. 23 - Prob. 3TYUCh. 23 - There are 25 individuals in population 1, all with...Ch. 23 - Prob. 5TYUCh. 23 - EVOLUTION CONNECTION Using at least two examples,...Ch. 23 - SCIENTIFIC INQUIRY INTERPRET THE DATA Researchers...Ch. 23 - Prob. 8TYUCh. 23 - SYNTHESI2E YOUR KNOWLEDGE This kettle lake forracd...
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- Using the HardyWeinberg Law in Human Genetics Suppose you are monitoring the allelic and genotypic frequencies of the MN blood group locus (see Question 2 for a description of the MN blood group) in a small human population. You find that for 1-year-old children, the genotypic frequencies are MM = 0.25, MN = 0.5, and NN = 0.25, whereas the genotypic frequencies for adults are MM = 0.3, MN = 0.4, and NN = 0.3. a. Compute the M and N allele frequencies for 1-year-olds and adults. b. Are the allele frequencies in equilibrium in this population? c. Are the genotypic frequencies in equilibrium?arrow_forwardUsing the example of pea color in Mendel’s pea plants, can you devise equations to determine the allele frequencies of A and a from the genotype frequencies of aa, Aa, and AA?arrow_forwardWhat is the expected genotype frequency of the heterozygous genotype under the Hardy-Weinberg equation P = 0.7?arrow_forward
- If there are five alleles at a locus, how many genotypes can there be at this locus? How many different kinds of homozygotes can there be? How many genotypes and homozygotes can there be with eight alleles at a locus?arrow_forward1) a. Write out all of the gametes that an individual with the following genotype can produce W of of wt wit b. Will the genotypes be in equal or unequal proportions? a. Write out all of the gametes that an individual with the following genotype can produce with t B W. mot b. Will the genotypes be in equal or unequal proportions?arrow_forward8% of XY individuals are color blind in a population. Assume Hardy-Weinberg conditions. Submit your answer as it is. a) What is the percentage of color-blind XX individuals? b) What is the percentage of XX individuals who are carriers? c) If this population has 1000 individuals with 50% of male and 50% of female, how many carriers are present in this population? Submit your answer as it is. Do not round up.arrow_forward
- Allele B is a deleterious autosomal dominant. The frequency of affected individuals is 4.0 × 10−6. The reproductive capacity of these individuals is about 30 percentthat of normal individuals. Estimate μ, the rate at whichb mutates to its deleterious allele B. Assume that the frequencies of the alleles are at their equilibrium values.arrow_forwardAn F2 ratio of 12:3:1 is most characteristic of a genetic interaction involving? 1) two gene loci with two alleles per locus 2) three gene loci with two alleles per each gene 3) two alleles of the same gene 4) multiple alleles of one genearrow_forwardThe ABO blood group has three different alleles: F, P, and i. The genotypes and phenotypes (blood types) for different combinations of the three alleles are shown in the table. Possible Genotype and Phenotypes of ABO Blood Group Phenotypes (Blood types) Type A Туре В Туре О Type AB Genotypes AJA or Ai BIB or 1Bi JAJB What percentage of offspring from a cross between a homozygous Type B parent with a Type AB parent is expected to contain the i allele? O A. 25% ов 0% ос. 75% O D. 100% acerarrow_forward
- Answer plsarrow_forwardHow is it possible that there are multiple different alleles in a population and yet any individual can have only two alleles?arrow_forwardUsing a Punnett Square predict what the Genotypes are for the persons II-3 & II-4.(* C/C or C/A mean that they married and had children with a blood cousin).arrow_forward
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