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Q: A pair of contrasting characters controlling the same trait is called:
  • A. Factors
  • B. Loci
  • C. Allele
  • D. Lineage
Correct Answer: Option C - Allele is a variant form of a gene. Some genes have a variety of different forms which are located at the same position or genetic locus, on a chromosome human are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent. The word allele is a short form of allelomorph, which is coined by British geneticists William Bateson and Edith Saunders.
C. Allele is a variant form of a gene. Some genes have a variety of different forms which are located at the same position or genetic locus, on a chromosome human are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent. The word allele is a short form of allelomorph, which is coined by British geneticists William Bateson and Edith Saunders.

Explanations:

Allele is a variant form of a gene. Some genes have a variety of different forms which are located at the same position or genetic locus, on a chromosome human are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent. The word allele is a short form of allelomorph, which is coined by British geneticists William Bateson and Edith Saunders.