A collection of host cells that houses different cloned
fragments of DNA is a
a. cDNA library.
b. transcribed DNA library.
c. genomic library.
d. DNA library.
e. plasmid library.
Answer: d
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In Drosophila melanogaster, the gene for eye color is located on the X chromosome. The allele for red eye color
(Xw+) is dominant over the allele for white eye color (Xw). You examine a vial of 100 flies that are all offspring from a single genetic cross. You see only red-eyed females and white-eyed males present. The genotypes of the parents were ____.
a. Xw+Xw+; XwY b. Xw+Xw; XwY c. XwXw; Xw+Y d. Xw+Xw; Xw+Y e. XwXw; XwY
Which teeth are used to crush and grind food?
a. canines only b. incisors only c. molars only d. canines and incisors e. incisors and molars
An artificial pacemaker supplements the actions of
a. sympathetic neurons. b. the atrioventricular node. c. the medulla oblongata. d. the sinoatrial node. e. the heart muscle itself
The host species in which a parasite becomes an adult and reaches maturity is referred to as a(n) ________ host
Fill in the blank(s) with correct word