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How do gene work in pairs?why do they work in pairs? And what is genotype ?

Posted by Ramesh Kumar 8 years, 11 months ago

CBSE > Class 10 > Science

2 answers

Lakshmi Kumari 8 years, 11 months ago

There is the involvement of 2 parents in sexual fertilisation.so, an offspring receives 2 gene for a particular trait from each parent and that's why, sexually reproducing offsprings possess a pair of 2 genes for a trait.

Genotype refers to the genetic construction of an organism.That is, what type of genes are present in the pair of 2 genes for a trait.For ex ;If there is a gene for tallness and a gene for dwarfness in the pair of genes for a character , then, genotype of concerned offspring is Tt.

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Rajendra Singh 8 years, 11 months ago

The pair of gene that determine a trait are called alleles. one gene of them is dominant while other is rececive in nature. Alway dominant gene appear. The genetic makeup of gene is called genotype.

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