Lesson 3 : Allele

Hai!!

Mari belajar istilah genetik bersama Cikgu Najwa. Ewahh..

Apa itu gene? Rujuk SINI

Complex explaination:

An allele is one of two or more versions of a gene. An individual inherits two alleles for each gene, one from each parent. If the two alleles are the same, the individual is homozygous for that gene. If the alleles are different, the individual is heterozygous. Though the term "allele" was originally used to describe variation among genes, it now also refers to variation among non-coding DNA sequences.

Contoh: 

Dua jenis alleles yang digunakan dalam gambar ni iaitu B dan b. Kedua-dua alleles mewakili gene kepada warna mata iaitu brown colour. Allele ada dua jenis iaitu dominant dan recessive allele.

Seperti yang gambar ni nyatakan, B adalah dominant dan b adalah recessive. Bila ada B, confirm dia menang. Mata akan jadi brown. Allele b kena ada dua, baru boleh menang dan mata tak akan jadi brown. So, dia akan jadi biru.

Faham tak? Kalau faham, bagus. Kalau tak faham, tanya.