Carcinomas are cancers of the ____
a. liver
b. epithelial linings
c. bone marrow
d. glands
e. lymphoid tissue
ANSWER: b
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Today the term “algae” is used primarily for
organisms in the group(s) a. bacteria. b. protista. c. plantae. d. bacteria and protista only. e. bacteria, protista, and plantae.
Which of the following correctly represents the probability that a detrimental autosomal recessive
allele will actually be expressed in a population if the occurrence of the allele is such that 1 in 50 individuals are heterozygous? a. 1/50 ? 1/50 = 1/2500, with 1/4 of their children homozygous recessive = 1/2500 ? 1/4 = 1/10,000. b. 1/50 ? 1/4 that are homozygous recessive = 1/200. c. 1/50 ? 2 children (on average) ? 1/4 that are homozygous recessive = 1/100. d. 1/50 ? 2 parents ? 4 children ? 1/4 that are homozygous recessive = 1/25. e. Cannot be determined from the information given.
Neandertals existed until approximately:a
5,000 years ago. b. 15,000 years ago. c. 30,000 years ago. d. 70,000 years ago. e. 100,000 years ago.
Organisms that reproduce sexually ________________________
(a) must be haploid, unlike organisms that reproduce asexually. (b) can reproduce only with a partner that carries the same alleles. (c) create zygotes that are genetically identical to each other. (d) undergo a sexual reproductive cycle that involves an alternation of haploid cells with the generation of diploid cells.