Answer
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Hint: The homozygous pair will contribute only one type of gene to gametes and the heterozygous pair will contribute types of the gametes.
Complete answer: First pair A is heterozygous pair i.e. Aa which will contribute two types of gametes.
First pair B is a heterozygous pair i.e. Bb which will contribute two types of gametes.
The first pair C is a heterozygous pair i.e. Cc which will contribute two types of gametes.
Gametes produced by AaBbCc are as follows ABC, ABc, AbC, Abc, aBC, aBc, abC, and abc.
So, the correct answer is “Option B”.
Additional Information: Homozygous organisms: an organism in which both the alleles of a character at the corresponding loci in homologous chromosomes are identical is said to be homozygous or genetically pure for that character. Homozygous individuals breed true for the specific trait i.e. produce offspring with similar genotype and phenotype on inbreeding.
They are also called pure individuals.
Note: Heterozygous organism: An organism in which two alleles of a character at the corresponding loci in homologous chromosomes is unlike is said to be heterozygous for that character. Heterozygous individuals do not breed true and are said to be hybrid for that character.
An organism may be Homozygous for certain traits and heterozygous for other traits.
Complete answer: First pair A is heterozygous pair i.e. Aa which will contribute two types of gametes.
First pair B is a heterozygous pair i.e. Bb which will contribute two types of gametes.
The first pair C is a heterozygous pair i.e. Cc which will contribute two types of gametes.
Gametes produced by AaBbCc are as follows ABC, ABc, AbC, Abc, aBC, aBc, abC, and abc.
ABC | ABc | AbC | Abc | aBC | aBc | abC | abc | |
ABC | AABBCC | AABBCc | AABbCc | AABbCc | AaBBCC | AaBBCc | AaBbCC | AaBbCc |
ABc | AABBCc | AABBCc | AABbCc | AABbcc | AaBBCc | AaBBcc | AaBbCc | AABbCc |
AbC | AABbCC | AABbCc | AAbbCC | AAbbCc | AaBbCC | AaBbCc | AabbCC | AabbCc |
Abc | AABbCc | AABbcc | AAbbCc | AAbbcc | AaBbCc | AaBbcc | AabbCc | Aabbcc |
aBC | AaBBCC | AaBBCc | AaBbCC | AaBbCc | aaBBCC | aaBBCc | aaBbCC | aaBbCc |
aBc | AaBBCc | AaBBcc | AaBbCc | AaBbcc | aaBBCc | aaBBcc | aabbCC | aaBbcc |
abC | AaBbCC | AaBbCc | AabbCC | AabbCc | AaBbCC | aaBbCc | aabbCC | aabbCc |
abc | AaBbCc | AaBbcc | AabbCc | Aabbcc | aaBbCc | aaBbcc | aabbCc | aabbcc |
So, the correct answer is “Option B”.
Additional Information: Homozygous organisms: an organism in which both the alleles of a character at the corresponding loci in homologous chromosomes are identical is said to be homozygous or genetically pure for that character. Homozygous individuals breed true for the specific trait i.e. produce offspring with similar genotype and phenotype on inbreeding.
They are also called pure individuals.
Note: Heterozygous organism: An organism in which two alleles of a character at the corresponding loci in homologous chromosomes is unlike is said to be heterozygous for that character. Heterozygous individuals do not breed true and are said to be hybrid for that character.
An organism may be Homozygous for certain traits and heterozygous for other traits.
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