HEREDITY
MONOHYBRID CROSS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
50% of the offspring will have purple flowers
|
|
|
0% of the offspring will have purple flowers
|
|
|
25% of the offspring will have purple flowers
|
|
|
100% of the offspring will have purple flowers
|
Detailed explanation-1: -100 % Explanation: In the given question, the allele for dominant trait is dominant to white flower. Then all the progeny will be white therefore 100% is the correct answer.
Detailed explanation-2: -Answer and Explanation: In this situation, every offspring produced from this cross with be a heterozygote (Pp), and because purple is dominant to white, all the offspring will be purple. Therefore, the probability of an offspring having white flowers is zero.
Detailed explanation-3: -When a heterozygous purple flower (Rr) is crossed with a recessive white flower (rr), the progeny obtained are with the genotype (Rr), (Rr), (rr) and (rr). So, 50% of the progeny are with purple flowers (Rr) and 50% are with white flowers (rr).
Detailed explanation-4: -Two pea plants, both heterozygous for flower color, are crossed. The offspring will show the dominant purple coloration 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.