GENETIC INHERITANCE : Type of Cross

Baiklah sekarang mari memahami bahawa type of cross ada empat iaitu Test Cross(popular), Back Cross, Self Cross dan Reciprocal Cross.


Test Cross : cross between a recessive homozygous(tt) with an organis of dominant phenotype but unknown genotype (maksud xtau tu, boleh jadi genotypenya TT@Tt as long it is dominant)

Back Cross : A mating between individuals of the P and F1


Self Cross(sumbang mahram yer disitu) : Cross between male and female from same generation.


Reciprocal Cross: A cross reversing the roles of males and females to confirm the result obtained from an ealier cross. (kalo nak paham yg ini ia juga untuk determine that a particular gene is sen-linked or not. Contohnya yg popular masa kita nak crosskan berkaitan haemopholia tu ataupun color blind).