The beginning of anaphase is indicated by which of the following?
A) Chromatids lose their kinetochores.
B) Cohesin attaches the sister chromatids to each other.
C) Cohesin is cleaved enzymatically.
D) Spindle microtubules begin to polymerize.
C
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PCR has many uses and advantages. What is one disadvantage of this technology?
a. It is difficult to keep the amplified DNA strands intact. b. PCR works on only some DNA sequences. c. The amplified product is often degraded. d. PCR is a slow and inefficient process. e. PCR is easily contaminated with foreign DNA
Identify the chemical formula missing from the following equation.Yeast + ________ ? 2C2H5OH + 2CO2
A. O2 B. H2O C. C6H12O6 D. CH3CHO E. C5H12O5
Which of the following attenuates the relationship between thin ideal internalization and eating pathology among racial and ethnic minority women?
a. socioeconomic status b. living in urban versus rural environments c. a warm personality d. a strong ethnic identity
Following their respective breeding seasons, several species of hummingbirds occur at the same locations in North America and several hummingbird flowers bloom simultaneously in these habitats. These flowers seem to have converged to a common morphology and color. Birds have the most visual sensitivity to the color red. Following their breeding season, these species of hummingbirds are
A. allopatric. B. sympatric.