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3 years ago

How are specialized breeds of dogs, cats, horses, and other animals produced?

2 answers:

7 0

All the species you mentioned which can "crossbreed" are just that - single species which can breed within their species. All the different breeds of dog, for example, are the same species. Thus what they do is not "crossbreeding" at all. The exceptions that I can think of are: horses can breed with donkeys although they are different species, and also with zebras. This only happens in captivity, however - in wild situations, the different social behaviors of the species prevents them from getting together. And the hybrids produced are usually sterile.

tensa zangetsu [6.8K]3 years ago

3 0

They are produced by

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Using the information from problem 11, scientists do a further test cross using a heterozygote for height and nose morphology. T

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Answer:

The recombinant frequency between T and S is 18%;

The correct Sequence of genes is T-A-S

Explanation:

The table below shows the recombinant frequency between heterozygous height and nose morphology:

Tall-uptrend snout 40% Expected

Dwarf-downtrend snout 42% Expected

Dwarf-uptrend snout 9% Recombinant

Tall-uptrend snout 9% Recombinant

Sum Total 100%

To calculate the recombinant frequency; we have :

=9+9

=18%

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The determinant of the corect sequence of the genes is T-A-S

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3 years ago