0
How is the sickle cell allele maintained through natural selection?
Wiki User
∙ 8y ago
Individuals with two recessive alleles have very high rates of reproduction.
Obie Ondricka
Wiki User
∙ 8y agoHeterozygous individuals pass the dominant and recessive alleles to offspring.
Add your answer:
Earn +20 pts
Which evolutionary mechanisms could affect allele frequencies in a population being maintained in captivity?
natural selection, genetic drift, and mutation
How does natural selection predict a gradualistic mode of evolution?
Gradualism isn't a prediction of natural selection, but of our understanding the mechanisms that produce reproductive variation. Natural selection makes predictions about allele frequencies in populations and reproductive fitness.
Are new alleles made by natural selection?
No - natural selection does not create new alleles. Variation in alleles needs to exist in the population in order for natural selection to occur. Natural selection will involve the change in allele frequencies over time, but it does not create new alleles. New alleles are the result of mutations.
What does natural selection cause in a population on a genetic level?
Change in the allele frequency within the gene pool. ?
Which is more likely to be true natural selection or evolution?
Evolution, of course. Evolution can happen without natural selection in some cases; drift, flow. Generally though, natural selection causes evolution and then, by definition, would come first.
How is the sickle allele maintained through natural selection?
Heterozygous individuals pass the dominant and recessive alleles to offspring.
How is the sickle-celled allele maintained through natural selection?
Individuals with two recessive alleles have very high rates of reproduction.
Which evolutionary mechanisms could affect allele frequencies in a population being maintained in captivity?
natural selection, genetic drift, and mutation
Does natural selection on single-gene trait cannot lead to changes in allele frequencies?
Natural selection on a single-gene trait can lead to changes in allele frequencies for the alleles of that gene.
People with one sickle cell allele are not likely to get a malaria what is this an example of?
It is an example of Natural Selection, Modern Theories of Evolution.
How does natural selection predict a gradualistic mode of evolution?
Gradualism isn't a prediction of natural selection, but of our understanding the mechanisms that produce reproductive variation. Natural selection makes predictions about allele frequencies in populations and reproductive fitness.
What effect does natural selection have on the frequency of a recessive lethal allele?
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 is kept low by selection.
What is natural selection and how does natural selection evolution?
A simplified explanation. Natural selection is the nonrandom survival and reproductive success of randomly varying organisms who by this reproductive success change the allele frequency over time in populations of organisms, which is evolution.
Are new alleles made by natural selection?
No - natural selection does not create new alleles. Variation in alleles needs to exist in the population in order for natural selection to occur. Natural selection will involve the change in allele frequencies over time, but it does not create new alleles. New alleles are the result of mutations.
What process would most likely act against any offspring with an allele for cataracts?
natural selection
What does natural selection cause in a population on a genetic level?
Change in the allele frequency within the gene pool. ?
Why does recombination between linked genes continued to occur?
New allele combinations are acted upon by natural selection
