HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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There is no way to determine
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Breed it with a purebred brown rat
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Look at at its parents
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Breed it with a heterozygous rat
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Detailed explanation-1: -To identify whether an organism exhibiting a dominant trait is homozygous or heterozygous for a specific allele, a scientist can perform a test cross. The organism in question is crossed with an organism that is homozygous for the recessive trait, and the offspring of the test cross are examined.
Detailed explanation-2: -Bay is the dominant phenotype (the physical expression of a genetic trait) between the two, and its genotype is expressed by either E/Aa or E/AA. Black is the recessive coat color, meaning it is always homozygous and expressed asE/aa.
Detailed explanation-3: -If the genotype for the black fur would be homozygous, then it will be represented as BB and if heterozygous, then it would be represented as Bb (b is the recessive allele for a similar trait). The possible genotypes for the offspring are BB, Bb, and bb.
Detailed explanation-4: -Incomplete Dominance A black mouse has the genotype BB. Mice with the genotype bb are white. Heterozygous (Bb) mice are brown.