The example of ocean and lake stickleback fishes indicates that morphology can be altered by
A) changing only the sequences of protein-coding genes.
B) altering the expression of a gene that is associated with development in only some parts of the body.
C) environmental factors (such as pollution).
D) the elimination of a gene from a population, which leads to loss of the body armor.
Answer: B
You might also like to view...
In examining sex differences in the brains of male and female humans, researchers found that males had ____
connections between the two hemispheres of the cortex and ____ connections between the two hemispheres of the cerebellum than females.
a. stronger; stronger b. stronger; weaker c. weaker; weaker d. weaker; stronger e. weaker; indistinguishable
Which appendages in chelicerae are used in place of antennae to provide tactile sensory information?
a. chelicerae b. ovigers c. pedipalps d. trochanter
The type of neuron that conducts its message from the central nervous system toward an effector is the
A. synaptic neuron. B. interneuron. C. motor neuron. D. sensory neuron. E. Schwann cell.
The above figure of goslings (baby geese)
following their mother demonstrates a. imprinting behavior. b. displaying instinctive behavior. c. feeding a social parasite. d. a learned behavior. e. all of these