SHARE physiolo. Question No. 1 When listed events occur? (Each answer can be use

Question

SHARE physiolo. Question No. 1 When listed events occur? (Each answer can be used once, more than once or not at all Find a match for each of the 5 statements: 1) formation of tetrads 1) prophase lof meiosis disjunction of homologous chromosomes to telophase lof meiosis the opposite poles lining up of chromosomes in the area of the metaphase equator 4) exchange of sites of chromatids 4) telophase ll of meiosis disjunction of sister chromatid to the 5 prophase of meiosis s opposite poles 60 anaphase of meiosis anaphase II of meiosis Question No. 2 Choose the proper term from the right column for each type of a chromosome. Find a match for each of the 5 statements: a chromosome with a centromere that is acrocentric 1) localized at or very near the end of the 1) (duplicated arms) a chromosome has two arms of submetacentric approximately equal length 4) a chromosome without a centromere 40 telocentric a chromosome has long and very short dicentric isochromosome

Explanation / Answer

1-Formation of tetrads-the first stage of meiosis is called prophase I

2-disjunction of homologous chromosomes to the opposite pole- anaphase I of meiosis.

3-lining of the chromosomes in the area of the equator-metaphase

4-exchange of site of chromosomes-prophase l of meiosis.

5 ans-disjunction of sister chromatids to the opposite pole-anaphase II of meiosis.

Ans2-

1-submetacentric-centromere very near the end of the chromosomes

2-isochromosomes-two identicle arms.

3-metacentric-equal length arms.

4-acentric-without a centromere

5-acrocentric-unequal arms

Ans-3

1-nucleosomes

2-phytohaemagglutinis a mutagen which triggers mitosis.

3-puff or chromosomal puffs.

4-kinetochore

5-ans-hematoxylin

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