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In Biology / Senior High School | 2025-05-29

Ipaliwanag kung ano ang meiosis at bakit ito mahalaga sa reproduction. Paano ito naiiba sa mitosis?

Asked by joshuspama1145

Answer (1)

Ang meiosis ay isang uri ng cell division na nangyayari sa sex cells o gametes (sperm at egg). Mahalaga ito sa sexual reproduction dahil ito ang bumabawas ng bilang ng chromosomes mula 46 patungong 23, upang sa pagsanib ng sperm at egg, magiging 46 ulit ang chromosomes ng anak.Dalawang Bahagi ng MeiosisMeiosis I – Dito naghihiwalay ang homologous chromosomes, kaya nababawasan ng kalahati ang bilang ng chromosomes.Meiosis II – Parang mitosis ito, ngunit gamit ang kalahating genome. Hinahati nito ang sister chromatids upang makabuo ng apat na cells.Sa dulo ng meiosis, apat na haploid cells ang nabubuo (may 23 chromosomes bawat isa sa tao). Ang mga cell na ito ay genetically unique dahil sa crossing-over at random assortment ng chromosomes. Kaya kahit magkapatid, hindi sila eksaktong magkapareho ng traits.Sa kabaligtaran, ang mitosis ay tumutukoy sa paghahati ng isang cell upang makabuo ng dalawang identical na daughter cells, bawat isa ay may 46 chromosomes. Ginagamit ito sa paglaki ng katawan at repair ng tissues.Mahalaga ang meiosis sa genetic variation, na siyang dahilan kung bakit lahat ng tao ay may kanya-kanyang katangian. Kung wala ang prosesong ito, lahat ng anak ay magiging eksaktong kopya ng magulang. Isa rin itong paraan upang mapanatili ang tamang bilang ng chromosomes sa bawat henerasyon.

Answered by P1ggy | 2025-06-05

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