Question

1. In the C. elegans worm, the genetic model organism, an autosomal allele for a certain...

1. In the C. elegans worm, the genetic model organism, an autosomal allele for a certain phenotype (a) is recessive to the dominant allele (A). At a different locus, determining a different phenotype, (b) is recessive to (B). An aabb worm is crossed with an AABB worm. The F1 are then test-crossed with a recessive homozygote

a. What will the results of the testcross be if the two loci are linked with no crossing over?

b. What will the results of the testcross be if the loci assort independently?

C. What will the results of the testcross be if the loci are linked with a certain recombination frequency?

a. What will the results of the testcross be if the two loci are linked with no crossing over?

b. What will the results of the testcross be if the loci assort independently?

C. What will the results of the testcross be if the loci are linked with a certain recombination frequency?

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

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 the snail Cepaea nemoralis, an autosomal allele causing a banded shell (BB) is recessive to...
In the snail Cepaea nemoralis, an autosomal allele causing a banded shell (BB) is recessive to the allele for unbanded shell (BO). Genes at a different locus determine the background color of the shell; yellow (CY) is recessive to brown (CB). A banded, yellow snail is crossed with a homozygous brown, unbanded snail. The F1 are crossed with a banded, yellow snail (a testcross). a. What will be the results of the testcross if the loci assort independently? b. What...
In mice, a genetic model organism, Harlequin phenotype is due to an X-linked allele that is...
In mice, a genetic model organism, Harlequin phenotype is due to an X-linked allele that is recessive to the normal allele for coat color. A homozygous normal female is crossed with a Harlequin male. The F1 are intercrossed to produce F2. Give the genotypes and phenotypes, along with the expected proportions, of the F1 and F2 progeny.
5. Tay-Sach disease is due to an autosomal recessive allele t. The disease results in death...
5. Tay-Sach disease is due to an autosomal recessive allele t. The disease results in death of tt individuals before reproductive age. The relative fitnesses of the genotypes are TT=1, Tt=1, tt=0. a. What type of selection is occurring on this locus, and what do you expect will happen to the f(t) over time? b. Explain in general terms how Mutation-Selection Balance can keep the t allele in the population at a constant (equilibrium) frequency.
Tatuo Aida investigated the genetic basis of color variation in the Medaka (Aplocheilus latipes), a small...
Tatuo Aida investigated the genetic basis of color variation in the Medaka (Aplocheilus latipes), a small fish found naturally in Japan (T. Aida. 1021. Genetics 6:554-573). Aida found that genes at two loci (B, b and R, r) determine the color of the fish: fish with a dominant allele at both loci are brown, fish with a dominant allele only at the B locus are blue, fish with a dominant allele only at the R locus are red and fish...
Please answer all the questions, they're related The autosomal recessive allele bw, for brown eyes in...
Please answer all the questions, they're related The autosomal recessive allele bw, for brown eyes in Drosophila interacts with the X-linked recessive allele, v, for vermilion eyes, since flies that are recessive for both genes have white eyes. Wild type flies have red eyes. What eye color phenotypes, in what proportions, would be expected in the progeny from a cross of a white-eyed female and a brown eyed male?  Choose the best answer. Select one: a. all females with brown eyes,...
1.Which of the following is TRUE? a) Genetics is about the genotype. b)Inheritance is controlled by...
1.Which of the following is TRUE? a) Genetics is about the genotype. b)Inheritance is controlled by factors and each offspring receives three factors from each parent. c)Allele pairs never segregate from one another. d)The principle of segregation states that genes for different traits assort independently of one another in the formation of gametes. e)Independent assortment of two traits shows a F2 generation that has a 9:3:3:1 phenotypic ratio. 2.A cross between a black rabbit (BB) and a white rabbit (bb)...
Answer step by step. thank you. 1) Gene loci in testcross              Recombination frequency (%)             a...
Answer step by step. thank you. 1) Gene loci in testcross              Recombination frequency (%)             a and b                                                50             a and c                                                50             a and d                                                50             b and c                                                20             b and d                                                10             c and d                                                 28 Are all the genes linked? Are some of the genes linked? If so how many linkage groups are there? Can you determine the order of the genes on the chromosome? If so, what is the order?...
For problem 1, to compute probabilities, the probability of event 1 AND event 2 is obtained...
For problem 1, to compute probabilities, the probability of event 1 AND event 2 is obtained by multiplying the two probabilities together, whereas the probability of event 1 OR event 2 is obtained by adding the two probabilities. 1. Duchenne muscular dystrophy (DMD) is a condition that causes muscle degeneration and then death. Most people with the condition are wheelchair-bound by age 12 and dead before age 30. The condition is due to a mutation in the gene for a...
A phenotypically wilptype F1 female fruit fly that was heterozygous for genes controlling body color and...
A phenotypically wilptype F1 female fruit fly that was heterozygous for genes controlling body color and wing length was crossed to a homozygous mutant male tester with black body (mutant allele b) and vestigial wings (mutant allele vg). a. Symbolize the genotype of the dihybrid female and tester male using appropriate Drosophila gene symbolism using b+ and vg+ for the wildtype dominant alleles; b and vg for the recessive mutant alleles. b. What is the genotype of the F1 dihybrid...
8) You just isolated a new strain of mutant mice, and preliminary mating suggest that the...
8) You just isolated a new strain of mutant mice, and preliminary mating suggest that the new mutant phenotype is not inherited in an autosomal fashion. Circumstantial evidence seems to indicate that the mutant phenotype may be following either an X-linked dominant or a mitochondrial-type inheritance pattern. Assume the mice are true breeding. a) What informative crosses would you set up to distinguish between these two possibilities? b) How would you interpret your results? 9. You are crossing two individuals...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT