What type of bonds hold the two chains of
DNA together in a DNA molecule?
a. hydrogen
b. polar covalent
c. nonpolar covalent
d. ionic
e. more than one of these
A
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Four of the five items listed below are related
to genetic information. Select the EXCEPTION.
a. chromatids b. centromere c. chromosome d. phosphorylation e. polymerase
On the basis of nutrient content, a lake that has received large amounts of runoff from farms, feedlots, or sewage is classified as a(n) ________ lake
Fill in the blank(s) with correct word
The jellylike mixture of water and solutes enclosed by a cell's plasma membrane is known as _____.
A. cytosol B. nucleus C. organelle D. plasma membrane E. cytoplasm
Gene A is located near gene B on Chromosome 13 in humans. A mutation in the germ line of an individual with the haplotype AB generates gametes with the genotype Ab
Many descendants of this founder individual carry the b mutation, which predisposes carriers to high blood pressure. Initially, all descendants who inherit the b mutation also inherit the neighboring A allele. Through the generations, fewer and fewer descendants with the b mutation carry the A allele, and instead they have the a allele. (Individuals with A and a are equally healthy and fit.) Explain how the b and A alleles are separated.