1. An example of a mutagenic agent is
an amine
acetylcholine
ultraviolet light
sulfer dioxide
2. Kernal color is a traite etermined by two alleles. The dominant allele (P) produces a purple color and the recessive allele (p) produces a yellow color. Purple kernels and yellow kernals can best be described respectively as
heterozygous dominant and homozygous recessive
homozygous recess and heterozygous dominant or homozygous dominant
homozygous recessive or heterozygous dominant
heterozygous dominant or homozygous dominant and homozygous recessive
3. The genetic process by which alleles are transferred to complementary chromatids at the same or very similar times producing genetic variability within the organism for the possibility of future genetic variability within that organism’s population is called what?
chromosomal mutation
nondisjunction
independent assortment
crossing-over
4. A DNA nucleotide may contain
deoxyribose, cytosine, lipid
deoxyribose, thymine, phosphate
ribose, uracil, polypeptide
ribose, adenine, phosphate
5. Fossils of an extinct species of giant armadillo were found to be similar to a smaller species of armadillo presently inhabiting the same region. This similarity could best be explained on the basis of
evolution from older forms
inheritence of acquired characteristics
use and disuse
the heterotroph hypothesis
6. A study of the position and shape of the bones in the forelimbs of a flying squirrel, a bat and a beaver showed that the beaver and the flying squirrel appear to be most closely related. This determination was most likely based on a study in the field of comparative
cytogenetics
embryology
biochemistry
physical anatomy
7. By simulating conditions thought to have existed on a primitive Earth, Stanley Miller found that these conditions could result in the formation of
today’s genetic molecules
viral-like proteins
organic compounds
autotrophic molecules
8. According to the diagram pictured below, humans most closely relate to
the ancestral primate
chimpanzees
gorillas
orangutans
9. August Weismann conducted a series of experiments involving the removal of the tails of from several generations of mice. Which concept of LaMarckian evolution did he help disprove?
natural selection
gradualism
inheritence of acquired traits
geographic isolation
10. Modern evolutionary theory consists of the concepts of Darwin modified by knowledge concerning
population statistics
Mendel’s laws
the idea of the survival of the fittest
competition
Answer
1. ultraviolet light
2. heterozygous dominant or homozygous dominant and homozygous recessive
3. crossing-over
4. deoxyribose, thymine, phosphate
5. evolution from older forms
6. physical anatomy
7. organic compounds
8. chimpanzees
9. inheritence of acquired traits
10. Mendel’s laws