Genetics Exam I,
1. Which statement about the history of genetics is CORRECT?
a) Thomas Morgan is widely regarded as the father of genetics.
b) Alfred Sturtevant, a student of Thomas Morgan, produced the first genetic map.
c) Gregor Mendel is the first to use Drosophila in genetic studies.
d) Calvin Bridges, a student of Thomas Morgan, is the first to propose the chromosomal theory of
e) In 1900, three scientists independently rediscovered the laws of inheritance that had been discovered
by Sutton and Bovari more than 30 years ago.
f) It was unfortunate that Charles Darwin did not know Gregor Mendel’s work, because Darwin died
before Mendel published his results.
g) In honor of Gregor Mendel, geneticists refer to 1 mu as 1 centiMendel.
2. How many tetrads, dyads, and monads exist in a human primary oocyte, a secondary oocyte, and an
a) 23, 23, and 23
b) 46, 46, and 46
c) 46, 23, and 23
d) 92, 46, and 23
e) 46, 46, and 23
f) 92, 46, and 46
g) 92, 23, and 23
3. Which statement about chromosomes and cell divisions in humans is CORRECT?
a) Centromeres rarely exist in plant chromosomes.
b) DNA replication occurs in metaphase during mitosis.
c) The short arm of a chromosome is referred to as the q arm.
d) The complexity of an organism increases with its number of chromosomes.
regulates cell cycle and is known as a tumor-suppressor gene because tumors are suppressed
f) Second-division nondisjunction is due to nondisjunction of homologous chromosomes in the second
g) Human chromosome 1 is the biggest among its 22 pairs of autosomes.