The distinctive fur color of a Siamese cat is an example of:
What will be an ideal response?
environmental effects.
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A cell's DNA molecules contain its genetic material. The DNA molecule can be altered
a. by chance mismatching of base pairs. b. by damage from exposure to radioactivity. c. if the host cell is intelligent and determines that an alteration would help the cell survive. d. by chance mismatching of base pairs, by damage from exposure to radioactivity, and if the host cell is intelligent and determines that an alteration would help the cell survive. e. by chance mismatching of base pairs and by damage from exposure to radioactivity.
Which characteristic of capillaries aids in the process of diffusion?
a. slow blood flow b. one cell thick walls c. rapid blood flow d. both slow blood flow and one cell thick walls e. both one cell thick walls and rapid blood flow
In the graph above, which baby characteristics would explain the percent infant mortality curve and any subsequent effects on fitness?
A. The baby needs to be small enough to survive after birth, but large enough for a safe delivery. B. The larger the baby the better the chance of survival. C. The smaller the baby the better the chance of survival. D. The baby needs to be large enough to survive after birth, but small enough for a safe delivery. E. There is no correlation between birth weight and survival.
A ________ is a mass of neoplastic cells
A) diploid culture B) metastasis C) tumor D) gall E) plaque