When two genetic loci produce identical phenotypes in cis as well as in trans position, they are considered to be [CBSE PMT 1995; BHU 1999]
A) Pseudo alleles
B) The parts of the same gene
C) Multiple alleles
D) Different genes
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Pseudo alleles are two genetic loci produce identical phenotypes in cis as well as in trans position.
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When two genetic loci produce identical phenotypes in cis as well as in trans-position, they are considered to be parts of the same gene.
Option: B
Explanation:
- Genes are the structural and the functional unit of inheritance. Genes can have different by the three dimensional location of the genes.
- Such are parts of the same gene. Cis trans isomerism in the genes help in identifying of the same gene whether a mutation has taken place in it or not.
- This type of test is known as complementation test and it differentiates between allelic and non-allelic type of mutations.
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