Question 1

Which process is primarily responsible for maintaining the species chromosomal number from one generation to the next?

Accepted Answer

Meiosis

Question 2

A cell with 46 chromosomes undergoes mitosis. How many chromosomes will each daughter cell have after division?

Accepted Answer

$$46$$

Question 3

Which of the following best describes a dominant allele?

Accepted Answer

An allele that is phenotypically expressed even in the presence of any other allele

Question 4

If a mother is heterozygous for color blindness (X$$^NX$^n) $$and the father is not color blind (X$$^NY$$), what is the probability that a son will be color blind?

Accepted Answer

$$50\%$$

Question 5

Which term describes a condition in which two alleles are both fully expressed in the phenotype, such as in ABO blood types?

Accepted Answer

Codominance

Question 6

During which phase of the cell cycle does DNA replication occur?

Accepted Answer

S phase

Question 7

A woman with genotype HH for hair texture (curly hair) and a man with genotype hh (straight hair) have a child. What is the expected hair phenotype of their child?

Accepted Answer

Wavy hair

Question 8

Which of the following is NOT a function of mitosis?

Accepted Answer

Production of gametes

Question 9

What is the result of crossing over during meiosis?

Accepted Answer

Genetic variation among gametes

Question 10

Which of the following best describes a carrier for a recessive genetic disorder?

Accepted Answer

An individual who possesses a recessive allele but does not express it

Question 11

If a cell has a surface area of $$24$$ and a volume of $$8$$, what is its surface area to volume ratio?

Accepted Answer

$$3:1$$

Question 12

Which phase of mitosis is characterized by chromosomes aligning at the cell's equator?

Accepted Answer

Metaphase

Question 13

A person with genotype I$$^AI$^B$$ for blood type will have which blood type?

Accepted Answer

Type AB

Question 14

Which of the following is true about homologous chromosomes?

Accepted Answer

They carry genes for the same traits but may have different alleles

Question 15

Which of the following is an example of incomplete dominance?

Accepted Answer

A person with wavy hair from curly and straight-haired parents

Question 16

What is the chromosomal number of human gametes after meiosis?

Accepted Answer

$$n$$

Question 17

Which of the following best explains why cancer cells are dangerous?

Accepted Answer

They undergo uncontrolled cell division

Question 18

Which term refers to chromosomes other than the sex chromosomes?

Accepted Answer

Autosomes

Question 19

A mother with genotype rr (cannot roll tongue) and a father with genotype Rr (can roll tongue) have a child. What is the probability that the child cannot roll their tongue?

Accepted Answer

$$50\%$$

Question 20

Which of the following events occurs during anaphase of mitosis?

Accepted Answer

Chromatids are pulled apart to opposite poles

Mitosis, Meiosis, and Basic Genetics: Key Concepts for Anatomy & Physiology

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