Question

This is a pair of chromosomes having the same genes at the same loci; these chromosome pairs can have homozygous or heterozygous alleles.
The physical expression of genes.
A trait that can be masked by another one.
This is a diagram that shows the gene combinations that might result from a genetic cross.
The genetic makeup of an organism.

Answer 1

1. Homologous chromosomes — a pair of chromosomes with the same genes at the same loci (can bear homozygous or heterozygous alleles).
2. Phenotype — the physical expression (observable characteristics) of genes.
3. Recessive trait/allele — a trait or allele that can be masked by a dominant one.
4. Punnett square — a diagram showing possible gene combinations from a genetic cross.
5. Genotype — the genetic makeup of an organism.