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6 February, 07:14

Chromosome number variation Loss-of-function allele Physiological trait Discovery-based science Genetic cross A. Human Genome Project B. Down syndrome C. Model organism D. PKU E. Lactose metabolism

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  1. 6 February, 07:17
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    Chromosome number variation: B. Down syndrome

    Loss-of-function allele : D. PKU

    Physiological trait : E. Lactose metabolism

    Discovery-based science : A. Human Genome Project

    Genetic cross: C. Model organism

    Explanation:

    Down syndrome is a condition in which there is an extra copy of the chromosome number 21. Hence, it is a chromosome number variation.

    Physiological traits refers to any function of a body. Hence, it matches with lactose metabolism.

    Human Genome Project was a project under which the whole genome of the humans were sequenced. Hence, it is a discovery based science.

    A genetic cross is made between model organisms to test for the offsprings that would be produced from a cross. Hence, genetic cross and model organism math with each other.
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