The risk of having a child with Down syndrome due to a chromosomal translocation is independent of maternal age
a. True
b. FalseLeukemia is often associated with chromosomal translocations.
a. True
b. False
True
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Choose the true statements about the human and chimpanzee genomes.
_____ A comparison of genomes confirms that humans and chimpanzees are closely related species. _____ Very few mutations differentiating the two genomes occur in coding DNA. _____ Some insertion-deletions (indels) lead to loss of function changes in the two genomes. _____ More similarity exists between the genomes of human and mouse than between human and chimpanzee. _____ The estimated genome sizes and number of genes is very different in humans and chimpanzees.
The ____ horizon is usually light in color and contains little organic matter
a. A horizon b. B horizon c. C horizon d. D horizon e. O horizon
The most common form of low-quality energy
released in energy conversions is a. metabolic. b. heat. c. entropy. d. light. e. electricity.
Which of the following is not a layer or coat of the eye?
A. sclera B. collagen fibers C. choroid D. aqueous humor E. retina