Centromeres split and sister chromatids migrate to opposite poles in meiosis _____
A) anaphase I
B) telophase I
C) anaphase II
D) telophase II
Answer: C
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The study of biological diversity and evolutionary relationships among organisms is
A. nomenclature. B. taxonomy. C. ecology. D. systematics. E. biology.
During sexual reproduction, Saccharomyces cerevisiae forms haploid spores that are enclosed in a sac. Therefore Saccharomyces is classified as a/an ________.
A. glomerulomycete B. ascomycete C. cryptomycete D. basidiomycete E. chytrid
The causative organism of whooping cough is ________.
A. Cornyebacterium diphtheriae B. Haemophilus influenzae C. Bordetella pertussis D. Streptococcus pyogenes E. Streptococcus pneumoniae
Unattached earlobes (EE or Ee) are described in the textbook as dominant over attached earlobes (ee). A couple both have unattached earlobes. Both notice that one of their parents on both sides has attached earlobes (ee). Therefore, they correctly assume that they are carriers for attached earlobes (Ee). The couple proceeds to have four children.
A. The children must repeat the grandparents' genotype (Ee). B. If the first three are heterozygous, the fourth must be homozygous recessive. C. Two heterozygous, one homozygous recessive, and one homozygous dominant is a likely outcome, but all heterozygous, or two, three, or all four homozygous are also possible. D. They can be certain that three will be heterozygous and one homozygous recessive. E. All children must have unattached earlobes since both parents possess the dominant gene for it.