Question

2. Which of the following occurs during mitosis but not during meiosis I? 

a. The chromosomes are pulled to opposite poles of the spindle apparatus. 

b. The chromatids of each chromosome are separated. 

c. The nuclear envelope breaks down. 

d. Both synapsis and crossing over take place. 

e. The diploid number of chromosomes is reduced to the haploid number.

3. Table 1 shows the stage and number of cells and chromosomes per cell at the end of the stage in a 2n - 24 organism. u ring selected phases of melons Which of the following statements correctly describes the chromosomes in each daughter cell at the end of meiosis I? a. Each daughter cell contains one member from each homologous pairs of chromosomes. b. Each daughter cell contains one copy from each of the sister chromatid sets. 88 89 8 88 89 4. This diagram shows what process? a. Base pair substitution b. Duplication c. Deletion d. Nondisjunction e. Crossing over 88 H- 90 90 UNLU Which of the following processes increase genetic diversity? (select all that apply) a. Independent Assortment b. Crossing Over C. Segregation d. Nondisjunction of chromosomes e. Genetic Mutations

Answer 1

Hi dear, please find answers for 2 and 5 as requested.

2. b) the chromatids of each chromosome are separated.

Explanation: in mitosis the sister chromatids of each chromosome separates. Whereas in meiosis 1 the homologous chromosomes separates, sister chromatids are separated in meiosis 2.

5. a, independent assortment

b, crossing over

e, genetic mutation.

Explanation-all the above process increases the genetic variation. Apart from above 3, random mating of sperm and ovum also adds to the genetic variation.