When the phenotypic and genotypic ratio resemble each other in the F2 generation, it is an example of
A
dihybrid cross
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B
independent assortment
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C
incomplete dominance
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D
segregation of factors
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Solution
The correct option is C incomplete dominance The phenotypic and genotypic ratio (1:2:1), resembling in the F2 generation, is an example of incomplete dominance. This ratio is possible because neither allele is dominant. It is an exception to Mendelian law,because a heterozygous condition shows an intermediate trait. .
A dihybrid cross is a genetic cross involving two characters in which parents possess a different form of each character. While independent assortment is the independent behavior of each pair of homologous chromosomes during their segregation in meiosis-I. It also emphasizes the random distribution of maternal and paternal homologs into gametes.
Segregation of factors means that during gamete formation each pair of alleles segregate from each other and migrate to individual gamete.