A dihybrid cross involved a parental generation consisting oftrue-breeding plants with yellow, round seeds and true-breedingplants with green, wrinkled seeds. All the F1 generation consistedof plants with yellow, rounds seeds. If an F1 plant was crossed toa plant with green, wrinkled seeds, what would have been thepredicted ratio of F2 seeds in the following phenotypic categories:yellow and round, yellow and wrinkled, green and round, and greenand wrinkled?

answer

watching

406

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Trinidad TremblayLv2

28 Sep 2019

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Related questions

1.
In wolves, black coat color is recessive to the normal grey, andblue eye color is recessive to brown. A black-coated blue eyed malemates with a female who is heterozygous for both traits, and thereare 8 pups in the litter.
What are the expected genotoypes of the pups? what are the expectedphenotypes?

2.
A man and a woman both have normal color vision, and both havecolorblind fathers.
What proportion of their daughters would you expect to be colorblind?
What proportion of their sons?

3.
Assume that in the U.S. in 1960, the frequency of the autosomalrecessive Tay-Sachs disease among eastern European Jews was 1 per3600births.
What was the frequency of the Tay-Sachs allel in thispopulation?
In 1961, a woman of polish ancestry whose brother died of Tay-Sachsdisease marries a Jewish man of Hungarian ancestry. Assuming thatshe is a carrier, what is the probability that their first childwill have Tay-Sachs disease?

4. In fruit flies, black body (b) is recessive to normal body color(B). In a breeding study, a population of flies is allowed to mateat random. In the population, 3000 flies are homozygous for blackbody color, and 2000 flies are homozygous for the normalallele.
What is the frequency of each genotype in the F1 generation?
What would the proportion of phenotpyes be?
What is the frequency of the two alleles, B and b, in the F1generation?

5.
In peas, the dominant seed shape is round and the recessive iswrinkled(w). The dominant trait for pod color is green andrecessive is yellow (y). A plant with round seeds and green podsthat i heterozygous only for the color trait is crossed with aplant that has wrinkled seeds and yellow pods, and the resulting F1progeny are selfed(self fertilized).
Write out the P1 genotpes and the F1 and F2 genotypic andphenotypic ratios.
What proportion of the plants with green pods and round seeds fromthe F2 generation would you expect to be true breeding(i.e. produceonly plants with green pods and round seeds)?

Thank you

Which types of mutations are more likely to be harmful, a base change in the third position of a codon, or a base change in the first position of a codon? Why? Are all changes to the third position of a codon silent? Do all changes to the first position of a codon change the encoded amino acid?

You start with true-breeding tall plants with yellow seeds, and true-breeding short plants with green seeds. You do a cross and all of the F₁ are tall with yellow seeds. What fraction of the plants will have yellow seeds in the F₂? Does it matter if the two traits (height and seed color) are linked when you answer that question? What fraction of the plants will be tall with green seeds in the F₂? Does it matter if the two traits (height and seed color) are linked when you answer that question? If the two traits are completely linked (no recombination occurs between the genetic loci controlling these traits) what fraction of the F₂ will be short with yellow seeds? If the two traits are unlinked, what fraction of the F₂ will be short with yellow seeds?

Is the degree of linkage simply a matter of how far apart two genetic loci are on a chromosome?

What is the maximum genetic distance two loci can be apart on a chromosome? At what genetic distance do they simply become unlinked?

Why is the error rate during DNA replication related to population size?

You do a cross between two true-breeding strains of zucchini.One has green fruit, and the other has yellow fruit. The F1 plantsare all green, but when these are crossed, the f2 plants consist of9 green: 7 yellow. For each gene involved in the trait use lettersas your symbols, starting with the letter A

a) what were the genotypes of the two parental strains(green andYellow)?

Weekly leaderboard

Home

Homework Help 3,900,000

Biology 460,000

Unlock all answers

Related textbook solutions

Molecular Cell Biology

Biology: Science for Life with Physiology

Biology

Concepts of Biology

Essentials of Biology

Related questions

Weekly leaderboard