Kwayoyin halitta

Kwayar halitta gajeren DNA ne. Kwayoyin halitta suna fada wa jiki yadda ake kera wasu sunadarai. Akwai kusan kwayoyin 20,000 a kowace kwayar halittar jikin mutum. Tare, suna tsara zane ga jikin mutum da yadda yake aiki.

Kwayar halittar mutum ita ake kira genotype.

Kwayar halitta daga DNA take. Hayin DNA ya zama wani bangare na chromosomes din ku. Chromosomes suna da kwatankwacin nau'i-nau'i 1 na kwayar halitta ta musamman. Kwayar halitta tana faruwa a wuri ɗaya akan kowane chromosome.

Halayen dabi'u, kamar su launin ido, sune masu rinjaye ko masu rauni:

• Halaye masu rinjaye ana sarrafa su ta hanyar kwayar halitta 1 a cikin chromosomes ɗin.
• Halaye masu sakewa suna buƙatar dukkanin kwayoyin halitta a cikin jinsin halittar don aiki tare.

Yawancin halaye na mutum, kamar tsawo, an ƙaddara su ta fiye da kwayar halitta 1. Koyaya, wasu cututtuka, kamar su sikila cell anemia, ana iya haifar dasu ta hanyar canjin kwayar halitta guda.

• Chromosomes da DNA

Gene. Taber's Medical Dictionary Kan Layi. www.tabers.com/tabersonline/view/Tabers-Dictionary/729952/all/gene. An shiga Yuni 11, 2019.

Nussbaum RL, McInnes RR, Willard HF. Kwayar halittar mutum: tsarin kwayar halitta da aiki.A cikin: Nussbaum RL, McInnes RR, Willard HF, eds. Thompson & Thompson Genetics a Magunguna. 8th ed. Philadelphia, PA: Elsevier; 2016: babi na 3.