Difference between Homozygous & Heterozygous
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Homozygous
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Heterozygous
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Homozygous : If an organism has two copies of
the same allele, for example AA (mother gene contain information about black
hair and father gene contain information about black hair) or aa,( mother
gene contain information about brown hair and father gene contain information
about brown hair) it is homozygous for that trait.
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Heterozygous:
If the organism has one copy of two
different alleles, for example Aa
( mother gene contain
information about black hair and father gene contain information about brown
hair), it is heterozygous.
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It
has two type homozygous dominant and homozygous recessive
Genotype
AA (two dominant gene ) , aa (two recessive gene)
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Genotype : Aa (one dominant
gene and one recessive gene)
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They
have similar alleles(AA Or aa) for a
trait
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They have different
alleles for a trait
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Contain
either dominant (AA) or recessive(aa) alleles but not both types (Aa)
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Contain both dominant
and recessive alleles (Aa)
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Only
one type of gemate is formed either A or a
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Two types of gemmates
are formed A & a
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