The comparison of embryos across species reveals the conservative nature of the genes responsible for ____.
A. food procurement
B. reproductive behavior
C. embryonic development
D. embryonic size
E. embryonic intelligence
Answer: C
Biology & Microbiology
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Which of the following proteins play a role in the regulation of RecA?
A. RecBCD B. RecFOR C. RecX D. DinI E. All of the proteins given regulate RecA.
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Which of the phyla of animals has the greatest number of species?
A. Arthropoda B. Chordata C. Mollusca D. Annelida E. Nematoda
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Professional antigen-presenting cells (APCs) include B cells, macrophages, and (dendritic/plasma/T) cells.
Fill in the blank(s) with the appropriate word(s).
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Crosses between two dihybrid F1 pea plants, which are offspring from a parental cross AABB x aabb, result in F2 phenotypic ratios close to __________.
A) 1:2:1 B) 3:1 C) 1:1:1:1 D) 9:3:3:1
Biology & Microbiology