What advantage is it for some plants to use C4 and CAM photosynthesis?
A) They can conserve water and reduce photorespiration under hot, dry conditions
B) They can use the Calvin cycle at night when conditions are cooler and more humid.
C) They can absorb carbon dioxide more efficiently when atmospheric CO2 levels are low.
D) They can conserve water and produce four-carbon sugars instead of glucose
Answer: A
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Which drug is used to stimulate ovulation?
a. hMG b. hCG c. progesterone d. estrogen e. FSH
Cryptic coloration advertises a species unpalatability to potential predators
____________________ Indicate whether the statement is true or false.
Drought and floods are considered to be density-dependent factors potentially affecting population size.
Answer the following statement true (T) or false (F)
The ABO blood groups in humans are expressed as the IA, IB, and i alleles. The IA allele encodes the A blood group antigen, IB encodes B, and i encodes O. Both A and B are dominant to O. If a heterozygous blood type A parent (IAi) and a heterozygous blood type B parent (IBi) mate, one quarter of their offspring are expected to have the AB blood type (IAIB) in which both antigens are expressed equally. Therefore, ABO blood groups are an example of:
a) multiple alleles and incomplete dominance b) codominance and incomplete dominance c) incomplete dominance only d) multiple alleles and codominance