A student notes that an individual has attached earlobes, a recessive trait in humans. A cell is taken from this individual, and the alleles for the trait are isolated. What is the probability that one of the alleles was inherited from the individual's mother?

A. 0%
B. 50%
C. 75%
D. 100%


Ans: B. 50%

Biology & Microbiology

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The type of floral attraction that would work on the pollinator in Figure 37-2 is:

a. white flowers. b. purple or blue flowers. c. a strong sweet scent. d. a strong carrion-like scent. e. sweet nectar.

Biology & Microbiology

Which of the following is NOT an active form of an

enzyme? a. trypsin b. amylase c. pepsin d. pepsinogen e. chymotrypsin

Biology & Microbiology

The digestion and utilization of this material creates the greatest need for nitrogenous waste secretion by the kidneys.

A. collagen B. amylose C. oleic acid D. glucose E. lactose

Biology & Microbiology

Biologists captured and marked 100 butterflies, and later captured 115, 5 of which were marked. The

population estimate is 2000 butterflies.

Indicate whether the statement is true or false.

Biology & Microbiology