In mitosis, one diploid nucleus becomes
a. two haploid nuclei.
b. one haploid nucleus.
c. two diploid nuclei.
d. four diploid nuclei.
e. four haploid nuclei.
ANSWER: c
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Which statement correctly describes single-nucleotide polymorphisms (SNPs)?
a. A SNP locus typically has more than two alleles. b. SNPs are typically used as markers of a region of the genome. c. The frequency of the rarer SNP allele must be less than 1%. d. SNPs are the least common form of human genetic variation. e. If only two alleles are associated with a SNP, both must have relatively the same frequency in the population.
Radioactive radon gas is emitted from ____
a. rocks and soil b. medical x-rays c. cosmic radiation d. nuclear medicine e. uranium mines
The reaction that takes place in the fuel cell of the Alcosensor converts ethyl alcohol to ___ ___.
Fill in the blank(s) with the appropriate word(s).
Which hormone controls water retention by the kidneys and is also known as antidiuretic hormone?
A) T4 B) parathyroid hormone C) oxytocin D) luteinizing hormone E) vasopressin