Question

a black coat strain of cattle is crossed with an albino strain. The F1 are brindle...

a black coat strain of cattle is crossed with an albino strain. The F1 are brindle and the F2 consists of 29 black, 62 brindle, 31 red, 41 albino. what type of intergenic relationship can explain these result?
0 0
Add a comment Improve this question Transcribed image text
Answer #1

This is the case of dihybrid cross.

Let B gene encodes black strain.

A gene encodes albino strain.

Now when A and B genes are found together, then brindle strain is produced. This suggests that both A and B genes are essential for the brindle strain production.

When there is not found any genes in dominant form, then red color is produced.

The following pathway is found in the strain production:

The numbers are found to be different from the expected ones because there is found random mating between the individual and there is found random fusion of gametes. That's why there is found this difference.

Add a comment
Know the answer?
Add Answer to:
a black coat strain of cattle is crossed with an albino strain. The F1 are brindle...
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
  • When solid red cattle (homozygous recessive for gene R) are crossed with Black-and-Red cattle (homozygous recessive...

    When solid red cattle (homozygous recessive for gene R) are crossed with Black-and-Red cattle (homozygous recessive for gene B) to produce Brindle (irregular narrow strips of black on top of a red background), the F1 progeny. The F1x F1 cross resulted in the following F2 progeny; 3615 Brindle (Black stripes on Red background) 1225 Black-and-Reds Patches 1565 Solid Reds 6405 = Total Based upon the above data, the pure breeding Black parent was of which genotype: O RRbb O rrBB...

  • In guinea pig, white coat (f) is recessive to black coat (F) and curly hair (h)...

    In guinea pig, white coat (f) is recessive to black coat (F) and curly hair (h) is recessive to straight hair (H). A breeder crosses a guinea pig that is homozygous for white coat and curly hair with a guinea pig that is black with straight hair. The F1 are then crossed with guinea pig having white coat and curly hair in a series of testcrosses. The following progeny are produce from these testcrosses: white, curly 31 white, straight 12...

  • A pure-breeding strain of guinea pig with black fur is crossed to a pure breeding strain...

    A pure-breeding strain of guinea pig with black fur is crossed to a pure breeding strain with white fur. A number of possible progeny phenotypes are listed below. What would each phenotype indicate about the dominance relationship between alleles of this locus? (i) All the progeny are white [1 mark] (ii) All the progeny are black [1 mark] (iii) All the progeny are grey [1 mark] (iv) All the progeny have patches of white and black fur [1 mark]

  • in guinea pigs, the allele for black coat is (B) is dominant over the allele for...

    in guinea pigs, the allele for black coat is (B) is dominant over the allele for a white coat (b). at an independently assorting locus, an allele for rough coat (R) is dominant over the allele for smooth coat (r). a guinea pig that is homozygous for black color and rough coat is crossed with a guinea pig with a white, smooth coat. in a fears of matings, the F1 are crossed with guinea pigs having a white, smooth coat....

  • A true-breeding strain of zebras that have 60 stripes is crossed with a true-breeding strain of...

    A true-breeding strain of zebras that have 60 stripes is crossed with a true-breeding strain of zebras that have 0 stripes. All of the F1 zebras have 30 stripes. You cross many F1 zebras to each other to obtain a large F2 population. In the F2, there are some zebras with 0 stripes, some with 10 stripes, some with 20 stripes, some with 30 stripes, some with 40 stripes, some with 50 stripes, and some with 60 stripes. Approximately how...

  • 1. At least 3 independently assorting loci are known to govern coat color in mice. The...

    1. At least 3 independently assorting loci are known to govern coat color in mice. The genotype C- will allow pigment to be produced by 2 other genes. The cc genotype does not allow pigment production resulting in albino mice. The striped “agouti” hair pattern depends on the genotype A- and the aa genotype is nonagouti. Finally, the color of the pigment may be black (B-) or brown (bb). Five different coat colors may be produced by the action of...

  • coat color is due to a dominant allele (W), black coat color to its recessive allele...

    coat color is due to a dominant allele (W), black coat color to its recessive allele unnett squares for each of the following crosses and answer the questions. 2. In sheep, white tw). Construct P d frequency fo a. A black sheep crossed to a black sheep. List the genotypes, phenotypes, an each of the offspring b. A white sheep, the product of a black x white cross, is crossed with a black sheep. List the genotypes, phenotypes, and frequency...

  • In guinea pigs, white coat (w) is recessive to black coat (W) and wavy hair (v)...

    In guinea pigs, white coat (w) is recessive to black coat (W) and wavy hair (v) is recessive to straight hair (V). A breeder crosses a guinea pig that is homozygous for white coat and wavy hair with a guinea pig that is black with straight hair. The F1 are then crossed with guinea pigs having white coats and wavy hair in a series of testcrosses. The following progeny are produced from these testcrosses: (Hint: To test for independent assortment,...

  • In cocker spaniels, black coat color (B) is dominant over red (b), and solid color (S)...

    In cocker spaniels, black coat color (B) is dominant over red (b), and solid color (S) is dominant over spotted (s). (c) In the F2 generation of a cross between BBss with bbSS, what fraction of the offspring would be expected to be black and spotted? Explain please!!

  • Part A The wild-type color of horned beetles is black, although other colors are known. A...

    Part A The wild-type color of horned beetles is black, although other colors are known. A black horned beetle from a pure-breeding strain is crossed to a pure-breeding green female beetle. All of their F1 progeny are black. These F1 are allowed to mate at random with one another, and 320 F2 beetles are produced. The F2 consists of 239 black, 61 brown, and 20 green. Use these data to explain the genetics of horned beetle color One hypothesis to...

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