Approximately what percentage of the human genome is identical to that of a chimpanzee?
A) 50.0%
B) 62.3%
C) 92.0%
D) 98.8%
Answer: D
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A regression analysis of two traits yields a slope of 0. Explain the biological meaning of this value
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Which of the following combinations of sex chromosomes is never seen in human beings?
a) XXX b) XYY c) YYY d) X_ (also written as XO) e) XXY
You are asked to determine if a tissue sample taken from a plant stem comes from a monocot or eudicot. How will you accomplish this?
A. Examine the epidermis and determine the depth of the cuticle layer. B. Locate the vascular bundles and analyze their pattern. C. Determine if the xylem and phloem are located in separate vascular bundles or are bundled together. D. Look at the ground tissue to see if it is arranged in concentric rings or in parallel bundles. E. Examine the vascular cambium and determine if it is divided into segments or is continuous throughout the stem.
Which repair mechanism is most likely affected if the enzyme DNA glycosylase is not functioning properly?
A) double-strand break repair B) photoreactivation repair C) base excision repair D) SOS repair E) nucleotide excision repair