Which of the following must be true for a woman who is heterozygous for a given gene?
a. She must be heterozygous for all genes.
b. All of her eggs will contain both of the alleles for that gene.
c. All of her eggs will contain one allele or the other, but not both alleles.
d. She carries a rare mutation.
c. All of her eggs will contain one allele or the other, but not both alleles.
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Julie points to her book on a shelf and says, "down." Her expression is an example of a(n) _________
Fill in the blank(s) with the appropriate word(s).
Which type of microscopy enhances and amplifies slight changes in the phase of transmitted light?
A) differential interference contrast microscopy B) digital video microscopy C) fluorescence microscopy D) phase-contrast microscopy E) both choices A and D
Check all of the reasons that temperature is important for organisms.
_____ It affects the rate of biochemical reactions. _____ It affects the fluidity and rigidity of plasma membranes. _____ It has a direct effect on blood cell production.
The genetic information in a chromosome is enclosed in the nucleotides sequence of the molecule
a. true b. false