Question

Genes which code for a pair of contrasting traits are known as
(1) Alleles
(2) Chromatids
(3) Recombination
(4) Linkage

Answer 1

"Genes which codes of a pair of contrasting traits are known as alleles, i.e. they are slightly different

forms of the same gene. In a true breeding tall or dwarf pea variety the allelic pair of genes for height

are identical or homozygous, TT and tt respectively. The parents contain two alleles during gamete formation; the factors or alleles of a pair segregate or separate from each other such that a gamete receives only one of the two factors

"

Answer 2

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Genes which code for a pair of contrasting traits are known as allelomorph.

It is nowadays commonly known as alleles (allele). It is called the variant form of a given gene.

Many a times, different alleles may result in different observable phenotypic characteristics.

Different pigmentation or colour variation is one of them.

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