Explain why human height appears to be a mixture of parental phenotypes when in fact height is
genetically based.
What will be an ideal response?
Human height is a result of polygenic inheritance where there are multiple genes that contribute to this
single phenotypic trait. When genes are inherited from two parents of vastly different heights, this
results in a reduced number of alleles for tall height compared to the tall parent and an increased
number of alleles for tall height compared to the shorter parent.
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Irene knows her blood type is A, but William does not know his blood type. However, William knows that his mother and father both had blood type B. Irene and William's first child is a boy with type O blood. Based on this information, William's blood type could be
A. B only B. either B or O C. O only D. either AB or O E. A only
Which one of the following statements about regulation of translation is incorrect?
A. Translation initiation complexes recognize and bind to the 5' cap. B. The translation initiation complex scans for an AUG codon near the 5' cap. C. The 5'UTR sequence affects the efficiency of translation initiation. D. Regulation of translation does not depend on sequences in the 3'UTR or the poly(A) tail. E. One of the key variables for influencing efficient translation is the sequence of nucleotides flanking the AUG codon.
Chloroplasts are thought to have originated as
endosymbiotic associations when aerobic bacteria engulfed photosynthetic cells. This relationship was favored by the production of ____ by the endosymbiont. a. glucose b. hydrogen ions c. ATP d. oxygen e. water
The capacity to learn is inherited and allows the animal to change its behavioral patterns in response to changes in the environment.
Answer the following statement true (T) or false (F)