Eyes in different animal groups arose independently many times,
A. and the genes triggering lens formation in these different groups are homologous.
B. and the genes triggering lens formation in these different groups are homoplastic (analogous).
C. and the genes triggering lens formation in these different groups are examples of divergent evolution.
D. and the genes for eye color are multivariate.
E. and the genes for the eyes themselves are divergent.
A. and the genes triggering lens formation in these different groups are homologous.
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One of the main reasons that we exhale a higher percentage of carbon dioxide than we inhale is
A. we use carbon dioxide to make glucose. B. we produce carbon dioxide as a by-product of aerobic respiration. C. we produce carbon dioxide as a by-product of transmission of nerve impulses across synapses. D. carbon dioxide is a by-product of photosynthesis. E. carbon dioxide dissolves better in blood than does oxygen.
When each of two species benefits from their interaction, the relationship is referred to as ________
Fill in the blank(s) with correct word
Which type of staphylococcus is more likely to cause uncomplicated urinary tract infections in non-hospitalized hosts, especially sexually active young women?
A. Staphylococcus saprophyticus B. Staphylococcus aureus C. Staphylococcus epidermidis D. Staphylococcus intermedius
Most aquatic animals excrete ammonia, whereas land animals excrete urea or uric acid. What is the most likely explanation for this difference?
a. They have different diets. b. Land animals can get the energy needed to make urea or uric acid. c. Ammonia is very toxic, and it takes a lot of water to dilute it. d. Land animals cannot afford the energy needed to make ammonia. e. Fish need to get rid of ammonia, but land animals need it to live.