The solar system is about how many years old?
a. about 12 billion
b. about 4.6 billion
c. 750 million
d. 400 million
e. 200 million
Answer: b
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A challenge to traditional (pre-1860) ideas about species came from embryology, when it was discovered that _____.
A. mutations have a far more dramatic effect on embryos than on adult organisms B. the embryological development of many plants and animals is almost identical C. the more advanced the animal, the more slowly it develops D. embryos of dissimilar organisms, such as sharks and humans, resemble each other E. all animals develop similar embryonic gills
What is recombinant DNA technology?
What will be an ideal response?
Poor farming practices, such as plowing land straight up and down a hill, led to the formation of the Providence Canyon in Georgia in a process called _____.
A. root stripping B. soil redistribution C. soil erosion D. leaching E. vesselization
If you commit a crime, you need to make sure that you do not leave even the smallest speck of blood, hair, or other organic matter from your body. If you do, the DNA in this material can be amplified by ________, subjected to genetic analysis, and used
to identify you as the perpetrator of the crime. A) PCR B) STR analysis C) restriction digests