A chromosome with the centromere located two-thirds of the distance from its end could be classified as
A. metacentric.
B. submetacentric.
C. acrocentric.
D. telocentric.
E. either submetacentric or acrocentric.
E. either submetacentric or acrocentric.
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The cytoskeleton of animal cells includes:
A. microtubules, microfilaments, and intermediate filaments. B. actin, microfilaments, and intermediate filaments. C. actin, microtubules, intermediate filaments. D. tubulin, microfilaments, and intermediate filaments. E. microtubules and microfilaments.
Long, slender, helically curved, gram-negative bacilli with tight coils are identified as belonging to which species?
a. Treponema b. Leptospira c. Borrelia d. Coxiella
Geneticists designate heritability as "narrow" or "broad" to account for the fact that
A) genes contribute to different degrees. Typically, recessive alleles are rare and can have a large impact and dominant alleles tend to be common with minor but additive effects. B) genes contribute to different degrees. Typically, dominant alleles are rare and have a small impact and recessive alleles tend to be common, each with major effects. C) genes contribute to different degrees. Typically, dominant alleles are rare and can have a large impact and recessive alleles tend to be common with minor but additive effects. D) dominant and recessive alleles have equal impact, but dominant alleles are more common than recessive alleles.
Unlike land plants, green algae do not have
a. chlorophyll b. b. carotenoids. c. embryos. d. diploid generations. e. flagellated cells.