Which of the following can be measured to estimate an organism's evolutionary fitness?
A) The number of offspring it produces over its lifetime that survive to breed
B) The number of gametes it produces over its lifetime
C) The size of its offspring
D) The number of eggs it produces over its lifetime
E) The number of offspring it produces over its lifetime
A
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Neutral evolutionary forces alter allele frequencies in a random manner
Indicate whether the statement is true or false
Hairlessness in dogs is inherited from a single dominant allele. Inheriting two dominant alleles is lethal for an embryo. Ralph and Penelope are both hairless dogs. What is the probability that Penelope will give birth to a puppy with hair?
A) 3/4 B) 1/3 C) 2/3 D) 1/4
Answer the following statements true (T) or false (F)
1. The first and second laws of thermodynamics apply to nonliving systems like gasoline engines but do not apply to reactions in living cells. 2. Exergonic reactions do not require activation energy to get started. 3. Reduction is the gain of electrons by an atom or molecule. 4. An enzyme is a lipid that catalyzes chemical reactions. 5. When an end product of a reaction pathway is in excess and inhibits the first enzyme of the pathway, this is an example of positive feedback.
Which trait is an example of a quantitative trait in humans?
A) cheek dimples B) number of toe C) musical ability D) cystic fibrosis