Sickle cell anemia is a recessive trait (aa) which causes a red blood cell disorder in which there aren't enough healthy red blood cells
to carry oxygen to the body. Individuals with the genotype A have normal red blood cells. These individuals who are heterozygous
for the tralt usually have no symptoms of sickle cell disease, but carry the sickle cell trait and can pass it on to the offspring,
However, those individuals who carry the sickle cell tralt have some protective advantage against malaria, making this a common
genotype in malaria prone areas. The graph illustrates the frequencies of two genotypes, MA and Aa, over many generations. Select
ALL the conclusions you can draw from the graph provided.
A)
There appears to be random mating between genotypes.
B)
There is no selective advantage for one genotype over another
C)
This graph probably represents a population in a malaria-prone area.
D)
The population reached equilibrium for these traits at about generation 35.
E)
Sickle cell disease has died out of this population and will most likely not
return
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Development has provided electrically for less money but what may be considered a cause of nuclear power
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True or false: (a) the strings of little red dots represent carbohydrates. (b) the model is called a bilayer because there are two main types of molecules present, lipids and proteins. (c) the many black lines represent amino acid tails. (d) this model shows membrane transport. (e) the blue ovals are hydrophobic. (f) the blue ovals represent phospholipid heads.
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Which kind of mutation has occurred when the codon for an amino acid is changed to a stop codon? a. a silent mutation b. a missense mutation c. a frameshift mutation d. a nonsense mutation
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Sickle cell anemia is a recessive trait (aa) which causes a red blood cell disorder in which there a...
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