What are units of hereditary information?
a. RNA
b. genes
c. proteins
d. hormones
e. nucleotides
b
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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.
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.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.
The model of speciation that hinges on a physical barrier preventing gene flow is ________ speciation
Fill in the blank(s) with correct word