A) homozygous for that trait
B) homologous for the allele
C) heterozygous for that trait
D) heterologous for the alleles
Correct Answer: C
Solution :
A diploid organism is heterozygous at a gene locus when its cells contain two different alleles of a gene. Heterozygous genotypes are represented by a capital letter (dominant allele) and a lowercase letter (recessive allele), such as "Rr" or "Ss". The capital letter is usually written first. If the trait in question is determind by simple (complete) dominance, a heterozygote will express only the trait coded by the dominant allele and the trait coded by the recessive allele will not be present.
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