#1 Meiosis and Genetic Variety Flashcard

Front

What is the main purpose of meiosis?

Back

To contribute to genetic variety.

Front

How many chromosomes do human sperm and egg cells have?

Back

23.

Front

How many cells are formed at the end of meiosis II?

Back

4.

Front

Which phase of meiosis is characterized by chromosomes lining up in a single file line in the middle of the cell?

Back

Metaphase II.

Front

In metaphase I of meiosis, how are the chromosomes arranged?

Back

In pairs in the middle of the cell.

Front

What is meiosis?

Back

A type of cell division that reduces the chromosome number by half, creating four genetically diverse gametes.

Front

What is genetic variation?

Back

Differences in DNA sequences among individuals, which contribute to diversity in traits.

Front

What is the difference between meiosis and mitosis?

Back

Meiosis produces four genetically diverse cells, while mitosis produces two identical cells.

Front

What is crossing over in meiosis?

Back

The exchange of genetic material between homologous chromosomes during prophase I, increasing genetic diversity.

Front

What are homologous chromosomes?

Back

Chromosome pairs, one from each parent, that are similar in shape, size, and genetic content.