Biology (9-1) - 0970 CIE

Meiosis

Akopọ

If gametes had the full set of chromosomes, every fertilisation would double the number, and life would quickly become impossible. Meiosis solves this: it is the special cell division that halves the chromosome number to make gametes, and along the way it shuffles the genetic deck so that no two gametes are quite the same.

In this short Extended lesson you will state that meiosis makes gametes and define it as a reduction division that halves the chromosome number from diploid to haploid, producing genetically different cells.

Awọn Afojusun

  1. [Supplement] State that meiosis is involved in the production of gametes
  2. [Supplement] Describe meiosis as a reduction division in which the chromosome number is halved from diploid to haploid resulting in genetically different cells (details of the stages of meiosis are not required)

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Oriire fun ipari ẹkọ lori Meiosis. Ni bayi ti o ti ṣawari naa awọn imọran bọtini ati awọn imọran, o to akoko lati fi imọ rẹ si idanwo. Ẹka yii nfunni ni ọpọlọpọ awọn adaṣe awọn ibeere ti a ṣe lati fun oye rẹ lokun ati ṣe iranlọwọ fun ọ lati ṣe iwọn oye ohun elo naa.

Iwọ yoo pade adalu awọn iru ibeere, pẹlu awọn ibeere olumulo pupọ, awọn ibeere idahun kukuru, ati awọn ibeere iwe kikọ. Gbogbo ibeere kọọkan ni a ṣe pẹlu iṣaro lati ṣe ayẹwo awọn ẹya oriṣiriṣi ti imọ rẹ ati awọn ogbon ironu pataki.

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  1. Meiosis is involved in the production of: A. body cells B. gametes C. identical clones D. stem cells Answer: B
  2. In meiosis the chromosome number is: A. doubled B. maintained C. halved from diploid to haploid D. unchanged Answer: C
  3. The cells produced by meiosis are: A. genetically identical B. genetically different C. always diploid D. body cells Answer: B
  4. A human cell with 46 chromosomes undergoes meiosis. Each gamete has: A. 46 chromosomes B. 92 chromosomes C. 23 chromosomes D. 12 chromosomes Answer: C
  5. Which process restores the diploid number after meiosis? A. mitosis B. fertilisation C. replication D. germination Answer: B

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Awọn akọsilẹ ẹkọ ni kikun pẹlu awọn aworan apejuwe
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