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27 Nov 2019

Two short tailed (Manx) cats are bred together. They produce 3 kittens with long tails, 5 kittens with short tails and 2 kittens without any tails.

1) What is the type of dominance in the problem?

2) Is it monohybrid or dihybrid cross?

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Nelly Stracke
Nelly StrackeLv2
15 Feb 2019
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Related questions

Two short-tailed cats are mated. The litter contains 2 kittens without tails, 5 kittens with short tails, and 1 kitten with a long tail. How do you explain this genetically? Use symbols to support your explanation

1. The Manx cat has a very short or no tail due to a dominant trait T. Cats who inherit one dominant (T) and one recessive (t) allele will be tailless (Manx); cats who are homozygous recessive will have normal, long tails. However, the homozygous dominant condition (TT) is lethalҀ”the embryo will not develop. If two Manx cats breed, what are the chances of Manx offspring or kittens with long tails?

A. There will be no offspring at all, since none of the embryos will develop.

B. All offspring will be Manx cats.

C. All offspring will be kittens with long tails.

D.Twice as many Manx as kittens with tails.

E. Equal chance of Manx or kittens with tails.

2. Given what we know about Mendelian genetics, what is the genotype of pea plants with white flowers?White is a recessive trait while purple is a dominant trait.

A. hemizygous recessive

B. pw

C. w

D. homozygous recessive

E. heterozygous

3. The litter resulting from the mating of two short-tailed catscontains three kittens without tails, two with long tails, and sixwith short tails. What would be the simplest way of explaining theinheritance of tail length in these cats? Show the genotypes.

4. A normal vision man and woman produce three boys, one of whichis colorblind and the other two with normal vision. What are thegenotypes of the parents? (This is a sex-linked problem)

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