With respect to the alleles for sickle cell anemia, which genotype(s) is (are) at a disadvantage to
persons residing in tropical areas of Africa?
a. homozygous recessive
b. homozygous dominant
c. heterozygous
d. both heterozygous and homozygous dominant
e. both homozygous dominant and homozygous recessive
E
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The two major forms of carbon that remain following microbial degradation are
A) methane, organic matter, and fossil fuels. B) methane and carbon dioxide. C) lignin and fossil fuels. D) organic matter and hydrocarbons.
Referring to the above diagram, which
structure is responsible for storing bile?
a. F b. G c. H d. I e. J
In a DNA profile analysis using two loci, the chance of a match between two unrelated individuals at one locus is 1 in
400, and 1 in 1000 at the second locus. Therefore, the overall probability that two unrelated individuals will match at both loci is ____________________. Fill in the blank(s) with the appropriate word(s).
The outermost layer of the stele is the pericycle
____________________ Indicate whether the statement is true or false.