Which of the following substances is commonly used to inactivate microbes?
A. formaldehyde
B. alcohol
C. synthetic detergents
D. fluorescent dyes
E. alum
Answer: A
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____ is defined as the percentage of cases in which both members of a pair of twins show the trait when it is known that at least one member shows it
Fill in the blank with the appropriate word.
Cilia and flagella are comprised of a(n) ________ connected to a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Turner Syndrome (XO) is the only viable monosomy found in humans. Some sex chromosome trisomies are also viable, including XXX, XXY, and XYY. There are no viable autosomal monosomies, and a small handful of viable
autosomal trisomies exist, such as trisomy 21 (Down syndrome), and trisomy 13 and 18, both of which are lethal within the first year of life. Clearly, aneuploidy is not tolerated well in humans. Speculate as to why there are so few viable monosomies (only one) in humans, and why there are so few viable trisomies. Also, speculate as to why aneuploidy involving the sex chromosomes is better tolerated than those involving autosomes.
What will be an ideal response?Why does it make sense that many fruits are green when their seeds are immature?
A) Insects, which see the color green better than mammals do, can only carry seeds when they are small (immature). B) Animals know that green fruits are tasty, and are more likely to eat them. C) Green signifies less nutritive value. D) They are green because fruits with immature seeds are still capable of photosynthesis. E) They are harder to see and thus less likely to be eaten than other fruits.