Unit 4 Practice Exam Questions

Question 1

Sister chromatids move to opposite poles of the cell during _________.

anaphase II of meiosis
anaphase I of meiosis
metaphase I of meiosis
telophase of mitosis

Answer 1

anaphase II of meiosis

Question 2

The Mendelian Law of ________ predicted how alleles on different chromosomes (i.e. Chrom. 1 vs. Chrom. 2) move and are packaged into gametes independently of one another.

Segregation
Independent Assortment
Separation Sorting
Sister Chromatid Separation
Thermodynamics

Answer 2

Independent Assortment

Question 3

Plant height is a Mendelian trait in which tall is dominant to short. If you were to cross two heterozygous plants, what would you expect to see in the offspring?

75% short, 25% tall
75% tall, 25% short
100% short
100% tall
50% tall, 50% short

Answer 3

75% tall, 25% short

Question 4

The picture below shows cells in the middle of meiosis. They started as a single cell with 2 pairs of homologous chromosomes. What phase of meiosis is pictured? (Imagine there are two cells with 2 pairs of homologous chromosomes)

Prophase II
Anaphase I
Telophase II
Metaphase I
Metaphase ll

Answer 4

Metaphase ll

Question 5

If a muscle cell of a typical organism has 32 chromosomes, how many chromosomes will be in a gamete of that same organism?
8
64
4
16

Answer 5

16

Question 6

A human zygote has:

one copy of each chromosome.

one full haploid complement of
chromosomes.

chromosomes identical to those of a sperm cell.

chromosomes identical to those of an egg cell.

two copies of each chromosome.

Answer 6

two copies of each chromosome.