Why did Garrod define alkaptonuria as a recessive genetic disease?
A) It is expressed in male members of an affected family.
B) It is expressed in all members of an affected family.
C) It is expressed under certain environmental conditions.
D) It is expressed when two alleles for the disease are present.
E) It is expressed when one of the two alleles carries the disease trait.
D
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Quality control was performed to determine the validity of urea agar. S. multivorum and E. meningoseptica were used, which yielded positive for S. multivorum and negative for E. menin-goseptica. Which one of the following statements explains this discrepancy?
a. The urea agar is most likely expired. b. The pH is off on the urea agar. c. These two organisms are poor choices for quality control because they are both urea positive. d. No discrepancy is present; the results are valid.
Answer the question using the accompanying figure. Bees C and D ____
a. had a different father than bees E and F b. had a different mother than bees E and F c. inherited different alleles than bees E and F from their mother d. inherited different alleles than bees E and F from their father e. are haploid drones while bees E and F are diploid female workers
What are two factors affect membrane fluidity?
What will be an ideal response?
Habitat fragmentation increases the breeding success of a species
Indicate whether the statement is true or false