A recessive allele in mice results in an unusally long neck. Sometimes, during early embryonic development, the long neck causesthe embryo to die. An experimenter began with a population oftrue-breeding normal mice and true-breeding mice with longnecks. Crosses were made between these two populations to produce an F1 generation of mice with normal necks. The F1 micewere then mated to each other to obtain an F2 generation. For themice that were born alive, the following data were obtained:522 mice with normal necks62 mice with long necksWhat percentage of homozygous mice (that would have had longnecks if they had survived) died during embryonic development?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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A recessive allele in mice results in an unusally long neck. Sometimes, during early embryonic development, the long neck causes
the embryo to die. An experimenter began with a population of
true-breeding normal mice and true-breeding mice with long
necks. Crosses were made between these two populations to produce an F1 generation of mice with normal necks. The F1 mice
were then mated to each other to obtain an F2 generation. For the
mice that were born alive, the following data were obtained:
522 mice with normal necks
62 mice with long necks
What percentage of homozygous mice (that would have had long
necks if they had survived) died during embryonic development?

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