Chromosomes that have different alleles of a given gene at a locus are called?
Correct answer: D. Heterozygous
- A. Homozygous
- B. X-chromosomes
- C. Y-chromosomes
- D. Heterozygous
Explanation
Genotypes are described as homozygous if there are two identical alleles at a particular locus and as heterozygous if the two alleles differ.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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