Topic: Lethal Alleles
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What is dominant lethal allele?
A dominant lethal allele is a gene that causes death. An individual need only have one allele to die. Read More »
Source: http://wiki.answers.com/Q/What_is_dominant_lethal_allele
How is a lethal allele maintained in a population?
A lethal allele is maintained in population for example when you use bug spray on cockroaches there will be at least one cockroach with an allele that protects it from the bug spray, it then breeds and the allele Is passed to it's offspring... Read More »
Source: http://wiki.answers.com/Q/How_is_a_lethal_allele_maintained_in_a_...
What is a lethal allele
Lethal alleles are alleles that cause an organism to die. Examples are: cystic fibrosis, sickle-cell anemia, Huntington's disease Read More »
Source: http://www.chacha.com/question/what-is-a-lethal-allele
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Lethal Alleles
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If dominant, like Huntington's disease, then it may not be expressed until long after peak reproductive years have passed. If recessive it could be carried and masked from expression for untold generations. ( simplistic explanation )
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Source: http://wiki.answers.com/Q/Why_would_a_lethal_allele_not_be_elimin...
Recessive lethal alleles don't cause death in the heterozygous form because a certain threshold of protein output is maintained.
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Source: http://www.chacha.com/question/what-is-the-definition-of-a-lethal...
Perhaps not much as the recessive allele is masked in heterozygous condition. Depends on penetration and expresivity of the lethal allele, but any homozygous expression is fatal, so one can expect negative frequency selection; the freqiency...
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Source: http://wiki.answers.com/Q/What_effect_does_natural_selection_have...
the lethal dominant alleles kill the carrier before they can be passed on. lethal recessive will not.
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Source: http://wiki.answers.com/Q/Why_are_lethal_dominant_alleles_much_le...
A lethal allele results in actual fatality if it is the dominant or only allele in an organism's genotype. Most lethal alleles are recessive, however, so they are rarely expressed in an organism and get masked by a dominant allele, resultin...
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Source: http://wiki.answers.com/Q/How_is_it_that_a_lethal_allele_can_rema...
In a large population in which random mating occurs and in the absence of forces that change the proportions of alleles the original ratio of dominant alleles to recessive alleles will be retained from generation to generation.
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Source: http://www.chacha.com/question/why-do-recessive-lethal-alleles-pe...
