What is the basis for incomplete dominance?

A) Both alleles of a gene produce weakly functioning proteins.
B) One allele produces some functioning protein; the other allele is nonfunctional.
C) One gene has many effects.
D) An individual has more than two alleles for a gene.
E) Crossing over has switched alleles for a gene on homologous chromosomes.


Answer: B

Biology & Microbiology

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Which of the following microbial groups have members which are considered to be autotrophic?

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In the universal ABO blood grouping system, there are four phenotypes - A, B, AB, and O - which are determined by

three different alleles. The presence of three alleles in the ABO blood grouping system is an example of ____.

a. a polymorphism b. genetic drift c. the bottleneck effect d. a dimorphism e. the founder effect

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What kind of reaction produces large molecules by

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Refer to Figure 24-1d. The function of the structure labeled 3 is:

a. attachment to a host cell.
b. locomotion.
c. mate recognition.
d. replication.
e. to take over host cell mechanisms

Biology & Microbiology