difference between homozygous and heterozygous alleles.

allele alleles biochemistry biology cell centromere chromatid chromatids chromatin chromosome chromosomes diagram didatic difference diploid division dna dominance dominant formation gamete gene genes genetic genetics genome genotype heterologous heterozygous homologous homozygous human illustration information inheritance linked maternal medicine microbiology microscopic mitosis molecule organism phenotype recessive recombination replication reproduction research science scientific single site structure telomere vector