What are units of hereditary information?

a. RNA
b. genes
c. proteins
d. hormones
e. nucleotides


b

Biology & Microbiology

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Which phenotypes are parental?

In Drosophila, the autosomal recessive pr and cn mutations cause brown and bright-red eyes, respectively (wild-type flies have brick-red eyes). Flies who are homozygous recessive at both pr and cn have orange eyes. A female who has wild-type eyes is crossed to an orange-eyed male. Their progeny have the following distribution of eye colors:



A) wild-type and orange
B) brown and bright-red
C) wild-type and brown
D) bright-red and orange
E) There is no way to determine this.

Biology & Microbiology

Sensitization is a type of memory where increased responsiveness to mild stimuli occurs after

experiencing a strong stimulus.

Indicate whether the statement is true or false.

Biology & Microbiology

Which of the following is NOT an advantage

of sexual reproduction? a. It offers an alternative adaptation in a changing environment. b. It is adaptive in coevolution situations. c. Half of a parent’s genome is passed on. d. The genetic variation it provides may be useful in the future. e. It yields offspring with novel combinations of traits.

Biology & Microbiology

The model of speciation that hinges on a physical barrier preventing gene flow is ________ speciation

Fill in the blank(s) with correct word

Biology & Microbiology