ZuoTi.Pro
Question

A recessive mutation in the T gene important for muscle development in the diploid model organism...

A recessive mutation in the T gene important for muscle development in the diploid model organism Caenorhabditis elegans causes the worms to “twitch”. Researchers isolated the “twitch” phenotype. You cross two worms that are hybrids for T and M. What fraction of the offspring will twitch?

a. 1/4

b. 1/16

c. 3/4

d. 15/16

e. 9/16

science   biology   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Answer is 1/4 because it the allele T is recessive.The cross between the Heterozygous worms with the genotype TM results in the formation of daughter worms with genotypes 2TM,1TT and 1MM.Of these three genotypes only TT produces twich phenotype because both the recessive alleles are present and the recessive phenotype express.In TM twitch phenotype do not express because M is dominant.So the probability is 1 of the four genotypes hence the answer is 1/4.

0 0
Add a comment
Know the answer?
Add Answer to:
A recessive mutation in the T gene important for muscle development in the diploid model organism...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • 2. To understand the genetic basis of locomotion in the diploid nematode Caenorhabditis elegans, ...

    please show all work. 2. To understand the genetic basis of locomotion in the diploid nematode Caenorhabditis elegans, recessive mutations were obtained, all making the worm "twitch" ineffectually instead of moving with its usual smooth gliding motion. These mutations presumably affect the nervous or muscle systems. Twelve homozygous mutants were intercrossed, and the hybrids were examined to see if they twitched or not. The results were as follows, where "" means that the hybrid was wild type (gliding) and "t"...

  • A mutation in the Drosophila bristle gene (fb) (which is X-chromosome linked) causes a recessive forked...

    A mutation in the Drosophila bristle gene (fb) (which is X-chromosome linked) causes a recessive forked bristle phenotype (rather than the normal type of bristle). Another mutation in Drosophila autosomal body color gene (BR) causes a recessive brown color body (rather than the normal black body). A geneticist carried out the following cross: X+ / Y ; BR/br    x    X+/ Xfb ; BR/br If total of 240 F1 progeny were obtained, the “expected” numbers are: normal bristle male progeny -...

  • The Gumienny lab is trying to clone a gene that affects body size in the roundworm...

    The Gumienny lab is trying to clone a gene that affects body size in the roundworm C. elegans. A mutation in this gene, called sma-12, makes small animals when homozygous. It was isolated in a screen that used the chemical mutagen ENU. sma-12 was mapped to Chromosome V (5). To more finely map the location to identify the causative mutation, they perform a two-factor mapping experiment with another Chromosome V-linked gene, unc-23, which has a known position on Chromosome V....

  • work for 2 and 3 please, dont understand it. 2. The Aldose gene is 10 map...

    work for 2 and 3 please, dont understand it. 2. The Aldose gene is 10 map units from the fructose gene (A = dominant, can produce aldose; a recessive, cannot produce aldose; F= dominant allele, can produce fructose; fe recessive allele, cannot produce fructose). You cross worms with the chromosomes shown below. What is the probability that an offspring will be able to produce both Aldose and Fructose? A = donninant Af a = recessie af Af af AF Af...

  • 2. You've identified a mutant allele for a new gene in mice that causes muscle hypertrophy...

    2. You've identified a mutant allele for a new gene in mice that causes muscle hypertrophy You've named the gene Mh, so the wild-type allele is Mh, while the big-muscle mutant allele you've designated as Mh89, You believe this gene is involved in muscle growth and development, but you haven't been able to isolate the protein yet. You also do not know exactly where the mutation is in the gene, but you do know that the mRNA transcript of the...

  • 1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes....

    1) The alternate forms of a gene for the same trait are known as -A)alleles. B)phenotypes. C)genotypes. D)codominants. E)incomplete dominants. 2) Mendel carried out most of his research with A)livestock -B)pea plants. C)guinea pigs. D)fruit flies. E)bacteria. 3) Which of the following is true according to Mendel's law of segregation? A)Each individual contains two alleles for each trait. B)Fertilization restores the presence of two alleles. C)Alleles separate from each other during gamete formation. D)Each gamete contains one copy of each...

  • Merritt, 2016 BIO 1511 NAME:F. I.) 10-15 Post Lab #10 Post-LabE19: BASIC GENETICS PROBLEMS # Correct...

    Merritt, 2016 BIO 1511 NAME:F. I.) 10-15 Post Lab #10 Post-LabE19: BASIC GENETICS PROBLEMS # Correct Answers: (16) (Last) Lab Day: MWF(circle one) Solve the genetics problems in this handout. For all problems, assume complete dominance, assume one gene codes for one trait, and assume there are only 2 different alleles possible for each gene (dominant or recessive) 1. If a homozygous dominant red flowered plants are crossed with homozy phenotypes and genotypes of the offspring? Show the genotypes of...

  • For questions 5 and 6: Tall (T) is dominant to short (t) 5. Ifa homozygous tall...

    For questions 5 and 6: Tall (T) is dominant to short (t) 5. Ifa homozygous tall plant is crossed with a short plant, what percentage of the offspring will be tall? , The two parents used in this cross are called as breeding parents. 6. Iftwo heterozygous tall plants from the above are crossed, what percentage of the offspring will be short? For questions 7, 8 and 9: Purple (R) is dominant to white (r) If two white flowered plants...

  • multiple choice questions: 1- What fraction of the progeny will show a recessive phenotype for just...

    multiple choice questions: 1- What fraction of the progeny will show a recessive phenotype for just one gene in a cross between AaBbCc x AaBbCc? A. 7/16 B. 9/64                 C. ¼                       D. 27/64               E. 26/64 2- Siblings share what percentage of their alleles? A. ½ B. ¼                       C. 1/8                     D. 1/10                   E. 1/16 3- In a heterozygote, one allele conceals the presence of another. This is Mendel's: A. principle of segregation. B. principle of independent assortment. C. principle of dominance....

  • 1. Animals can teach us genetics. Match Codominance Show a dominant and recessive relationship _An allelic...

    1. Animals can teach us genetics. Match Codominance Show a dominant and recessive relationship _An allelic series A dominant homozygote is lethal Coat coloration is determined by 2 genes Shows variable expressivity A qualitative, or continuous, trait involving polygenes Females mosaics for X-linked heterozygous color genes A. Manx cat B. Coat coloration rabbits C. Labrador retriever dogs D. Piebald spotting in beagles E. A and B blood alleles F. A and O blood alleles G. Calico cat H. Height of...

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