Question 1

During which phase of the cell cycle does chromatin condense into visible chromosomes?

Accepted Answer

Prophase

Question 2

How many daughter cells are produced after mitosis, and how do they compare genetically to the parent cell?

Accepted Answer

Two daughter cells, genetically identical to the parent cell

Question 3

Which of the following medical conditions can result from errors in mitosis?

Accepted Answer

Down syndrome

Question 4

Meiosis results in ________.

Accepted Answer

Haploid daughter cells

Question 5

Which of the following cells undergo meiosis?

Accepted Answer

Gametes

Question 6

Meiosis is a type of cell division that produces:

Accepted Answer

Gametes

Question 7

In Mendel's monohybrid cross between true-breeding purple (PP) and white (pp) pea plants, what is the expected phenotypic ratio in the F2 generation?

Accepted Answer

$$3:1$$

Question 8

Which of the following best describes Mendel's Law of Segregation?

Accepted Answer

Each individual has two alleles for each gene, which separate during gamete formation

Question 9

A dihybrid cross between two heterozygous pea plants (YyRr x YyRr) produces which phenotypic ratio in the F2 generation?

Accepted Answer

$$9:3:3:1$$

Question 10

Which statement best explains the Law of Independent Assortment?

Accepted Answer

Inheritance of one trait does not affect the inheritance of another trait if the genes are on different chromosomes

Question 11

If a parent with genotype YyRr produces gametes, what is the expected proportion of each gamete type?

Accepted Answer

$$1/4 YR$$, $$1/4 Yr$$, $$1/4 yR$$, $$1/4 yr$$

Question 12

Which of the following is a dominant human genetic disorder?

Accepted Answer

Huntington's disease

Question 13

A person must inherit two copies of a recessive allele to express which of the following conditions?

Accepted Answer

Cystic fibrosis

Question 14

Which tool is used to predict the genotype and phenotype ratios of offspring from a genetic cross?

Accepted Answer

Punnett square

Question 15

In a dihybrid cross, if the genes for two traits are located close together on the same chromosome, which Mendelian law may not apply?

Accepted Answer

Law of Independent Assortment

Question 16

If a pea plant with genotype Pp is self-pollinated, what is the probability that an offspring will be homozygous recessive?

Accepted Answer

$$1/4$$

Question 17

Which of the following best describes a monohybrid cross?

Accepted Answer

A cross considering one trait

Question 18

Why did Mendel choose pea plants for his experiments?

Accepted Answer

They have several traits with easily observed variations

Question 19

Which of the following is NOT a trait Mendel studied in pea plants?

Accepted Answer

Leaf texture

Question 20

If two parents are both heterozygous for a recessive genetic disorder, what is the probability that their child will inherit the disorder?

Accepted Answer

$$1/4$$

Mendelian Genetics: Principles, Experiments, and Applications

Study Guide - Practice Questions