Question 1 Which of these statements correctly explains how crossing over increa

Question

Question 1 Which of these statements correctly explains how crossing over increases diversity among offspring? During crossing over, pieces of non-homologous chromosomes break off and are interchanged, creating new combinations of genes in the resulting sex cells. During crossing over, pieces of maternal and paternal chromosomes break off and are interchanged, creating new combinations of genes in the resulting sex cells. During crossing over, pieces of sister chromatids break off and are interchanged, creating new combinations of genes in the resulting sex cells. Question 2 Nondisjunction can occur either during the first half of meiosis (Meiosis I) or during the second half (Meiosis II). According to the animation you watched, which of those would produce daughter cells with these combinations of chromosomes? n - 1 n + 1 n n Meiosis I Meiosis II Question 3 Match each description below with either mitosis or meiosis. Used to produce skin cells, blood cells, etc., but not sex cells. In humans, occurs only in ovaries and testes. Results in 4 daughter cells. Daughter cells contain 23 chromosomes in humans. Includes two divisions, I and II. Homologous chromosomes do not line up together at metaphase. Crossing over between non-sister chromatids occurs. Daughter cells are genetically identical to the original cell. A. Mitosis B. Meiosis

Explanation / Answer

1. During crossing over, pieces of non-homologous chromosomes break off and are interchanged, creating new combination of genes in the resulting sex cells.

2. Meiosis I

3. 1. Mitosis

2. Meiosis

3. meiosis

4. meiosis

5. Mitosis

6. Mitosis

7. meiosis

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