1. A protein disk that attaches two chromatids to each other in a chromosome is called
a) Centromere
b) Chromosome
c) Chromatid
d) Chromatin
2. How many pairs of chromosomes are in the human body?
a) 23 pairs
b) 43 pairs
c) 26 pairs
d) 12 pairs
3. A student can study a karyotype to learn about the
a) Number of chromosomes in a body cell
b) Color of chromosomes in a body cell
c) Length of chromosomes in a body cell
d) None of the above
4. The diploid number of chromosomes in a human skin cell is 46. How many chromosomes are
in a human egg cell?
a) 46
b) 26
c) 23
d) 43
5. Which stage of the cell cycle occupies most of the cell’s life?
a) interphase
, b) metaphase
c) telophase
d) anaphase
6. What is the correct sequence of the cell cycle? (Put them in order: Metaphase, Telophase,
Interphase, Anaphase, Prophase)
Interphase, Prophase, Metaphase, Anaphase, Telophase
7. The phase of mitosis that is characterized by the arrangement of all chromosomes along the
equator of the cell is called
a) interphase
b) metaphase
c) telophase
d) anaphase
8. The “father” of genetics was
a) Gregor Mendel
b) Jean-Baptise Lamarck
c) Charles Darwin
d) Watson & Crick
9. What is the phenotype of an organism?
a) Reflects all the traits that are actually expressed.
b) The genetic make-up of the organism.
c) The physical appearance of the organism.
d) Both A and C
10. If an individual has two recessive alleles for the same trait, the individual is said to be
a) homozygous for the trait
b) none of the above
c) heterozygous for the trait