PBS Unit 2.2 Test Review

Front

What phase does DNA replicate so that there are two copies of each chromosome?

Back

Interphase

Front

What is a karyotype that shows a monosomy?

Back

A karyotype with one less chromosome than normal, such as Turner syndrome (45 chromosomes, X0).

Front

What do we call tumors that are NOT cancerous?

Back

Benign tumors.

Front

How many chromosomes do humans have?

Back

Humans have 23 pairs of chromosomes, totaling 46 chromosomes.

Front

If a disorder is recessive and a person is normal but their parent had the disorder, what is the person's genotype?

Back

The person's genotype is Aa.

Front

What is the definition of a chromosome?

Back

A chromosome is a long DNA molecule with part or all of the genetic material of an organism.

Front

What is the difference between malignant and benign tumors?

Back

Malignant tumors are cancerous and can spread to other parts of the body, while benign tumors are not cancerous and do not spread.

Front

What is the role of interphase in the cell cycle?

Back

Interphase is the phase where the cell grows, performs its normal functions, and duplicates its DNA.

Front

What is a genotype?

Back

A genotype is the genetic constitution of an individual, represented by alleles.

Front

What is the significance of the number 23 in human genetics?

Back

It represents the number of pairs of chromosomes in humans, totaling 46.