Question

For Drosophila Melanogaster, how to determine whether each locus is autosomal or X-linked (if assuming two...

For Drosophila Melanogaster, how to determine whether each locus is autosomal or X-linked (if assuming two traits, say eyeless and ebony body)

What cross could you perform to determine it and why?

0 0
Add a comment Improve this question Transcribed image text
Answer #1

We have to do the following cross to determine that whether two traits are encoded by autosomal or sex linked traits:

Cross 1: We have to cross the eyeless and ebony male with the wild type female. And then look for their progenies.

Cross 2: We have to cross the eyeless and ebony female with wild type male. And then look for their progenies.

Results: Now compare the progenies of cross 1 and cross 2.

* If the progenies are of same type in both cases. This suggests that traits are encoded by autosomal genes.

* If there is found different progenies, then the traits are encoded by sex linked genes.

Add a comment
Know the answer?
Add Answer to:
For Drosophila Melanogaster, how to determine whether each locus is autosomal or X-linked (if assuming two...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • For Drosophila Melanogaster how to determine whether the loci are assorting independently (lets say we are...

    For Drosophila Melanogaster how to determine whether the loci are assorting independently (lets say we are talking about two traits, ebony body and curved wing) Would you have to perform a Chi-square testing for it?

  • The phenotype of vestigial (short) wings (vg) in Drosophila melanogaster is caused by an autosomal recessive...

    The phenotype of vestigial (short) wings (vg) in Drosophila melanogaster is caused by an autosomal recessive mutant allele that independently assorts with an autosomal recessive mutant allele for hairy (h) body. A parental cross was made between a fly that is homozygous for normal wings with a hairy body and a fly with vestigial wings that is homozygous for normal body hair. The wild-type F1 flies were crossed to each other and produced 1536 offspring. The phenotypes of the F2...

  • The phenotype of vestigial (short) wings (vg) in Drosophila melanogaster is caused by an autosomal recessive...

    The phenotype of vestigial (short) wings (vg) in Drosophila melanogaster is caused by an autosomal recessive mutant allele that independently assorts with an autosomal recessive mutant allele for hairy (h) body. A parental cross was made between a fly that is homozygous for normal wings with a hairy body and a fly with vestigial wings that is homozygous for normal body hair. The wild-type F1 flies were crossed to each other and produced 1536 offspring. The phenotypes of the F2...

  • In Drosophila, the allele dp determines long wings and dp determines short ("dumpy") wings. At a...

    In Drosophila, the allele dp determines long wings and dp determines short ("dumpy") wings. At a separate locus e* determines gray body and e determines ebony body. Both loci are autosomal. The original parents were purebred with antagonistic traits, one of the parents had long wings and ebony body. The dihybrid F1 was test crossed with the following result: Long, ebony 151 Long, gray 136 Short, gray 140 Short, ebony 145 Total You want to determine if the data support...

  • How do you fill in the boxes? 7.1: Dihybrid Cross in Drosophila melanogaster In this exercise...

    How do you fill in the boxes? 7.1: Dihybrid Cross in Drosophila melanogaster In this exercise we will be focusing on two genes, one of which controls wing development (ap - apterous and the other controlling body coloration (eb - ebony). Each of these genes has two alleles, where the dominant allele of each produces the wild-type phenotype for their respective trait. When expressed in the homozygous recessive genotype, the recessive allele (ap) for the apterous gene results in a...

  • EXTRA CREDIT (10 pts) 7) In Drosophila, white eye is an X-linked recessive trait and ebony...

    EXTRA CREDIT (10 pts) 7) In Drosophila, white eye is an X-linked recessive trait and ebony body is an autosomal recessive trait. A homozygous white-eyed female (normal body) is crossed with a homozygous ebony male (normal, red eyes). a) What phenotypic ratio do you expect in the F1 generation? Show your work. b) What phenotypic ratio do you expect in the F2 generation? Show your work.

  • Scalloped (sd) wing is an X-linked recessive and ebony (e) body color is an autosomal recessive...

    Scalloped (sd) wing is an X-linked recessive and ebony (e) body color is an autosomal recessive mutation in Drosophila. If a true breeding scalloped female that is wild type for ebony, is mated with a true breeding ebony male that is wild type for scolloped, what proportion of scalloped, normal body colored males is expected in the F2? a. 0 b. 1/16 c. 3/16 d. 1/32 e. 1/8

  • Q5. You also want to determine the genotype of your parental pea plants based on the...

    Q5. You also want to determine the genotype of your parental pea plants based on the color of the plant (green is dominant to albino). One of your pea plants is green and the other is albino. What could you do to determine the genotype for color of each of your pea plants? 13 Q6. Based on the information you added to Table 8.2, explain why autosomal recessive traits can skip generations but autosomal dominant traits generally do not. /2...

  • Suppose that a geneticist discovers a new mutation in Drosophila melanogaster that causes the flies to...

    Suppose that a geneticist discovers a new mutation in Drosophila melanogaster that causes the flies to shake and quiver. She calls this mutation quiver, qu, and determines that it is due to an autosomal recessive gene. She wants to determine whether the gene encoding quiver is linked to the recessive gene for vestigial wings, vg. She crosses a fly homozygous for quiver and vestigial traits with a fly homozygous for the wild-type traits, and then uses the resulting F1 females...

  • BIO340 Recitation 5 Spring 2020 Your professor is having you look at two genes in Drosophila...

    BIO340 Recitation 5 Spring 2020 Your professor is having you look at two genes in Drosophila fruit flies to determine experimentally whether they are linked. One trait is eye color and two alleles are present at the gene: se+ is the wild-type allele for red eyes, and se is the mutant, recessive allele for sepia eyes. The second trait is body color and two alleles are present at this gene: e+ is the wild-type allele for grey body, and e...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT