CELL DIVISION
MEIOSIS AND GENETIC VARIATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
White flower color is dominant over purple flower color.
|
|
|
Purple flower color and white flower color are codominant.
|
|
|
Purple flower color and white flower color are linked.
|
|
|
White flower color only appears when the soil is acidic.
|
|
|
Purple flower color is dominant over white flower color.
|
Detailed explanation-1: -We will not have white coloured pea plant in F1 generation. Because all progeny plants will have the genotype Pp, and as the P is a dominant allele, that is purple colour is dominant, all the plants with Pp genotype will have purple coloured flowers. Was this answer helpful?
Detailed explanation-2: -Mendel noted that hybridizing true-breeding (P generation) plants gave rise to an F1 generation that showed only one trait of a characteristic. For example, a true-breeding purple-flowering plant crossed with a true-breeding white-flowering plant always gave rise to purple-flowered hybrid plants.
Detailed explanation-3: -In a cross between plants with purple flowers and plants with white flowers, the offspring of ‘F 1‘ generation all had white flowers. When the ‘F 1‘ generation was self-crossed, it was observed in the ‘F 2‘ generation that out of 100, 75 flowers were white.
Detailed explanation-4: -If pure purple flowered plants are crossed with white flowered plants, all plants of F1 generation are heterozygous purple flowered plants. Upon self-pollination of F1 progeny, purple flowered and white flowered plants are produced in a 3:1 ratio.
Detailed explanation-5: -A pea plant with purple flowers was crossed with white flowers, producing 50 plants with only purple flowers. On selfing, these plants produced 482 plants with purple flowers and 162 with white flowers.