Explain basic concepts of single gene inheritance using the terms alleles, chromosomes, homozygous, heterozygous, dominant, and recessive
What will be an ideal response?
A good answer will include the following key points:
+ Genes come in different forms called alleles.
+ The alleles in a pair of chromosomes are sometimes the same, which makes them homozygous.
+ The alleles in a pair of chromosomes sometimes differ, which makes them heterozygous.
+ If a person is homozygous for a trait, such as eye color, the genotype produces the phenotype.
+ If a person is heterozygous for a trait, the phenotype produced depends on which allele is dominant.
+ If one allele is dominant, its chemical instructions are followed whereas those of the other, the recessive allele, are ignored.
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