Large ears is a rare trait in a mainland population of mice. A few female mice homozygous for very large ears arrive at an island that already contains mice after sneaking onto a boat. This will lead to a population with a higher incidence of big ears than the mainland population because of ________
A. a bottleneck effect.
B. natural selection.
C. genetic drift.
D. increased mutation.
E. gene flow.
Answer: E
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An enzyme is thought to optimize the fit
between substrates by restraining and stretching or squeezing them into certain shapes and moving them to the transition state as described by the ____ model of enzyme activity. a. lock and key b. induced-fit c. template d. activation e. conformational
The figure represents the development of ____
in eukaryotic cells. a. the nuclear envelope b. mitochondria c. chloroplasts d. Golgi bodies e. chromosomes
Which of the following is a unique organelle found within some protists but not in higher animal cells?
A. Contractile vacuole B. Golgi apparatus C. Endoplasmic reticulum D. Mitochondrion
The majority of plants are classified as ________ .
a. prokaryotic consumers b. eukaryotic producers c. archaean producers d. prokaryotic producers e. eukaryotic consumers