Answer the following statements true (T) or false (F)
1. Molecular homologies indicate that living species evolved from a common ancestor or interrelated group of common ancestors.
2. Selective breeding results from programs designed to modify traits in domesticated species.
3. According to Thomas Malthus, food supplies tend to increase arithmetically while populations tend to increase exponentially, which means that populations will outgrow their food supply.
4. Neutral variation is supported by the observation that most changes in codons occur in the third position within the codon, which often has no effect on the sequence of amino acids in the protein.
1. TRUE
2. TRUE
3. TRUE
4. TRUE
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A mutagen that inserts between the stacked bases of a DNA double helix, distorting the DNA to induce single-pair insertions or deletions is called a(n) ________ agent.
A. intercalating B. insertional C. distortional D. interspersing
The species area effect applies to all of the following EXCEPT _____
a. islands b. lakes c. mountaintops d. nature preserves e. habitats isolated from each other
The sex chromosome composition of a person with
Turner syndrome is a. XXX. b. XO. c. XXY. d. XYY. e. none of these.
Organ formation is indicated by
a. A. b. B. c. C. d. D. e. E.