6G: Meiosis

6G: Meiosis

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Multiple Choice

The cells produced via meiosis are called:

• Gamete cells

• Somatic cells

• Body cells

• Skin cells

Multiple Select

Which of the following cell types is formed by meiosis?Select two answers.

• muscle cells

• skin cells

• sperm cells

• blood cells

• egg cells

Multiple Choice

6G Sexual reproduction in animals depends on the production of gametes. Which of these processes produces gametes in animals?

• Mitosis

• Fertilization

• Meiosis

• Binary fission

Multiple Choice

6G: During meiosis, homologous chromosomes exchange genetic material. This exchange of genetic material:

• increases the genetic variation

• reduces the diploid number to the haploid number

• increases the haploid number to the diploid number

• reduces the probability of mutations

Draw

Draw Crossing Over:

Multiple Choice

6G: Which diagram demonstrates how crossing-over contributes to genetic variety during meiosis?

Multiple Choice

6G Gametes produced by an organism contain a combination of genes from that organism. In every gamete, this combination is —

• the same because it is created from the same DNA

• the same because chromosomes are copied prior to meiosis

• different due to DNA replication prior to mitosis

• different due to independent assortment during meiosis

Open Ended

6G: In the early 1900s, Thomas Hunt Morgan was among the first scientists to contribute to the chromosome theory of heredity. Morgan's investigations into heredity in fruit flies led him to propose that the event represented in the diagram sometimes occurs. State something valid about the diagram.

Multiple Choice

6G Human body cells each have 46 chromosomes in their nuclei. Meiosis is necessary in order to ensure that each gamete produced in the human body has —

• 12 chromosomes

• 23 chromosomes

• 46 chromosomes

• 92 chromosomes

Open Ended

A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?

Multiple Select

Meiosis creates: Select all that apply.

• haploid cells

• diploid cells

• gamete cells

• somatic cells

• different cells

Multiple Choice

When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs

• crossing over

• mutagenesis

• hybridization

• fertilization

Open Ended

Crossing over creates:

Multiple Choice

Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.

• 23, 46

• 46, 23

• 2, 4

• 50, 100