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What is a gene?
A. A piece of DNA that controls a trait
B. A specific form of an allele
C. A Chromosome that determines gender
D. A group of chromosomes

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Answer: A). A piece of DNA that controls a trait

Explanation: A gene is a functional unit of hereditary. A gene determines the characteristics of an offspring. Genes are said to be functional unit of hereditary because they are transferred from the parents to the offsprings.

A gene is a nucleotide sequence found on a chromosome which determines a trait in an individual.

Answer:

A.)

Explanation:

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