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A recessive allele in mice results in abnormally long necks and sometimes death during embryogenesis. Crosses...

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Biology

A recessive allele in mice results in abnormally long necks andsometimes death during embryogenesis. Crosses were made betweenpure breeding normal mice and pure-breeding long neck mic. All ofthe F1 mice had normal necks. Following an F1 x F1 cross, the F2data below was observed for all mice born alive.

1044 Mice with normal necks

123 mice with long necks

How many total mice were expected in the progeny?

The answer is 348, how do we get this answer ?

Answer & Explanation Solved by verified expert
3.9 Ratings (475 Votes)
The first cross was between pure breeding normal mice and pure breeding Long Neck Mice Since the strains are pure breeding it means both strains are Homozygous at the locus determining Neck length Lets take the    See Answer
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