Principle of Inheritance and VariationEasyBloom L3
Question
A pea plant with purple flowers is heterozygous for flower color. Its genotype is Pp. The P and p alleles in the pea plant's cells are located
Options
A.next to each other on the same chromosome.
B.at the same location on homologous chromosomes.
C.on the X and Y chromosomes.
D.some distance apart on the same chromosome.
Solution
Sol.(b) [Key Concept: Alleles — Location on Homologous Chromosomes] Alleles (alternative forms of the same gene) are located at the SAME LOCUS (position) on HOMOLOGOUS CHROMOSOMES. The P allele is at the flower colour locus on one chromosome of the homologous pair, and the p allele is at the same locus on the other homologous chromosome. This is why during meiosis, alleles separate (segregate) into different gametes.
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