Unit 4 Review

Front

What does heterozygous mean?

Back

An organism is heterozygous when it has two different alleles for a specific gene, such as Rr.

Front

What does homozygous recessive mean?

Back

An organism is homozygous recessive when it has two identical recessive alleles for a specific gene, such as rr.

Front

What is mitosis?

Back

Mitosis is the process of cell division that results in two genetically identical daughter cells.

Front

What are the phases of mitosis?

Back

The main phases of mitosis are Prophase, Metaphase, Anaphase, and Telophase.

Front

What happens during Anaphase?

Back

During Anaphase, the sister chromatids are pulled apart to opposite ends of the cell.

Front

What happens during Telophase?

Back

During Telophase, the chromosomes begin to de-condense, and the nuclear envelope re-forms around each set of chromosomes.

Front

What is the role of Cytokinesis?

Back

Cytokinesis is the process that divides the cytoplasm of a parental cell into two daughter cells after mitosis.

Front

What base pairs with Guanine in DNA?

Back

Cytosine pairs with Guanine in DNA.

Front

What is the difference between DNA and RNA?

Back

DNA contains the sugar deoxyribose and is double-stranded, while RNA contains the sugar ribose and is single-stranded.

Front

What is a gene?

Back

A gene is a segment of DNA that contains the instructions for making a specific protein.