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There are three traits in mice that are found on the same chromosome (they are linked)....

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Biology

There are three traits in mice that are found on the samechromosome (they are linked). Gray fur is dominant to brown fur,long tails are dominant to short tails, and notched ears aredominant to unnotched ears.

A female mouse who is heterozygous is crossed with a male who ishomozygous recessive. The observed offspring are shown below:

# offspring.fur color.tail lengthear shape
372graylongnotched
41grayshortnotched
2graylongunnotched
36grayshortunnotched
31brownlongnotched
3brownshortnotched
39brownlongunnotched
385brownshortunnotched

What are the phenotypes of the two parental (nonrecombinant)chromosomes:

1. fur: tail: ears

2. fur: tail: ears

3. What is the order in which these genes are found on thechromosome? (identify the middle gene, the other two can be eitherorder) Genes are: fur color, tail length, ear shape

: :

4. What is the map distance between fur color and taillength?

5. What is the map distance between tail length and earshape?

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