Humans have a maximum of two types of cones
____________________ Indicate whether the statement is true or false.
F, three
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Most evidence indicates that skin color is controlled by ____ gene pair(s)
a. one b. two to three c. ten d. five to seven e. fifteen
Answer the following statements true (T) or false (F)
1. Mutated p53 genes are found in more than half of all human cancer tumor cells. 2. Through examining the function and form of FtsZ and tubulin proteins, biologists can find evolutionary links between prokaryotes and eukaryotes. 3. An advantage of asexual reproduction is that it takes less time and energy than sexual reproduction. 4. After the crossover event in meiosis I, the recombinant sister chromatid is genetically identical to its parents. 5. The nuclei resulting from a mitotic division are genetically different from the original.
Four of the five answers listed below belong to the same category of structures. Select the exception
a. blastocyst b. amnion c. allantois d. yolk sac e. chorion
Innate immunity _____
A) is activated immediately upon infection B) depends on an infected animal's previous exposure to the same pathogen C) is based on recognition of antigens that are specific to different pathogens D) is found only in vertebrate animals