define allele?write the difference between homozygous allele and heter

1.	define allele?write the difference between homozygous allele and heterozygous allele.
Answer» each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome Homozygous means that both copies of a gene or locus match while heterozygous means that the copies do not match. Two dominant alleles (AA) or two recessive alleles (aa) are homozygous. One dominant allele and one recessive allele (Aa) is heterozygous. When it comes to genetic traits, scientists look at genes and the locus where that gene or trait encodes on the chromosome. Since humans possess two copies of each chromosome, they also have two copies of each gene and locus on those chromosomes. Each of these trait-encoding genes (or loci) is called an allele. If the alleles match, the person is homozygous for that trait. If the alleles are different, the person is heterozygous for that trait.

define allele?write the difference between homozygous allele and heterozygous allele.

Answer»

each of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome

Homozygous means that both copies of a gene or locus match while heterozygous means that the copies do not match. Two dominant alleles (AA) or two recessive alleles (aa) are homozygous. One dominant allele and one recessive allele (Aa) is heterozygous.

When it comes to genetic traits, scientists look at genes and the locus where that gene or trait encodes on the chromosome. Since humans possess two copies of each chromosome, they also have two copies of each gene and locus on those chromosomes. Each of these trait-encoding genes (or loci) is called an allele. If the alleles match, the person is homozygous for that trait. If the alleles are different, the person is heterozygous for that trait.

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