Biology Forum › Genetics › can’t find answer to biology ?
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May 3, 2008 at 3:10 pm #9571
FredBurroughs
Participantif someone could answer this for me, i’d be grateful. i’ve spent the last 2 nights trying to figure it out….
Attached earlobes are recessive to free earlobes. What genotypic ratio is expected when an individual with attached earlobes mates with an individual heterozygous for free earlobes?
a. 2:1
b. 9:3:3:1
c. 1:1
d. 1:2:1
e. 3:1I have a really unhelpful Biology book, so if someone could explain the answer, that would be great!
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May 3, 2008 at 5:32 pm #83846
mith
Participanthttp://biology-online.org/biology-forum … are#p96192
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May 13, 2008 at 12:15 am #84046
Cat
ParticipantAttached earlobes (a) are recessive to free earlobes (A).
What genotypic ratio is expected when an individual with attached earlobes (aa) mates with an individual heterozygous for free earlobes (Aa)?Aa x aa => 50% Aa + 50% aa => 1:1
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