Define the term fitness
What will be an ideal response?
Fitness is a measure of the proportion of offspring that a particular phenotype will contribute to the next generation.
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What is the pollen to ovule ratio of the species A plant?
a. 10 b. 100 c. 1000 d. 10,000,000
Which of the following statements about phenylketonuria (PKU) is false?
A) Buildup of phenylpyruvic acid affects the nervous system. B) The amino acid tyrosine cannot be made. C) Production of the hormone thyroxin s affected. D) The skin color of those with phenylketonuria is light because of decreased levels of melanin. E) Adrenalin levels increase in the blood stream.
What happens to a lizard's metabolic rate when the temperature increases 10°C?
A) The metabolic rate stays constant. B) The metabolic rate approximately doubles. C) The metabolic rate approximately triples. D) The metabolic rate approximately quadruples.
Which of the following statements is true?
A. Lactic acid is a product of aerobic respiration; ethyl alcohol is a product of fermentation. B. Oxygen is a product of cellular respiration; carbon dioxide is a product of photosynthesis. C. Glucose is a product of aerobic respiration; lactic acid is a product of anaerobic respiration. D. Oxidation is the loss of electrons; reduction is the gain of electrons.