Meiosis & Genetic Variation

Crossing over causes...

• genetic recombination

• haploid

• fertilization

• sister chromatids

Somatic cells are...

• haploid (n)

• sperm or egg cells

• Diploid (2n)

• homologous chromosomes

Crossing over occurs in what phase?

• Prophase I

• Prophase II

• Anaphase I

• Anaphase II

seperation of homologous chromosomes occurs during

• Mitosis

• Meiosis I

• Meiosis II

• Fertilization

Crossing over takes place between...

• sister chromatids

• identical chromosomes

• x and y chromosomes

• homologous chromosomes

During cytokineses in oogenesis what part of the cell divides unequally?

• the sperm cell

• the chromosomes

• the cytoplasm

• the ovary cell

What formula can tell us how many possible variations there are in an organism's gametes that results from independent assortment?

• 2n

• 2^n

• n^2

• 2n * 2n

Spermatogenesis results in _______ viable haploid cell(s) while oogenesis results in ________ viable haploid cell(s)

• 4, 1

• 1, 4

• 4, 4

• 1, 1

Which is NOT a way that variation can occur?

• Crossing over

• Independent assortment

• Random fertilization

• Mitosis

Where does Meiosis occur?

• Somatic cells

• Body cells

• Gamete cells

• All cells