The diploid number of chromosomes is _________
(a) the 2n number
(b) is in a parent cell and therefore in the two daughter cells following mitosis
(c) varies according to the particular organism
(d) is present in most somatic cells
(e) all of these are correct
Answer: (e) all of these are correct
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The DTaP vaccine contains
A) purified bacterial DNA. B) bacterial endotoxin derivatives. C) heat-killed Bordetella pertussis cells. D) diphtheria toxoid.
If you had a garden full of a variety of plants, you might notice that the only pollinators of a
plant called trumpet vines are hummingbirds. Can you anticipate anything about the appearance of these flowers? What is the advantage of having a single pollinator for your plant species?
What will be an ideal response?In one minute, human DNA polymerase replicates about ________ bases.
A) 40 B) 100 C) 1,000 D) 3,000
The ________ is the primary germ layer that gives rise to muscle, bone, connective tissue, and organs such as the heart, kidneys, ovaries, and testes
Fill in the blank(s) with correct word