OBJECTIVE LIFE SCIENCE
GENETICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2:2
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1:1
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1:2:1
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None of the above
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Detailed explanation-1: -A cross between a homozygous plant with recessive traits and a heterozygous plant is known as a test cross.
Detailed explanation-2: -If heterozygous parents are being crossed, there is a possibility of having both, dominant and recessive, traits appearing in F1 generation. Each heterozygous parent will produce two types of gametes, one with dominant and one with a recessive allele. When these gametes fuse, they give rise to all three combinations.
Detailed explanation-3: -If you are crossing two parents that are ‘true breeding’-meaning they each have homozygous traits (one has dominant traits, the other has recessive traits)-the F1 generation will typically be heterozygous (having a genotype that is heterozygous and a phenotype that is dominant).