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

Biology & Microbiology

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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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology

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

Biology & Microbiology