NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A red and white flower are cross-pollinated. The offspring are all red. Red is classified as ____
A
disorder
B
purebred
C
dominant
D
recessive
Explanation: 

Detailed explanation-1: -The crossing of a red flowered plant and a white flowered plant produces all the offspring with pink flowers. This cross illustrates red and white exhibit incomplete dominance. This situation occurs due to the blending of both the alleles.

Detailed explanation-2: -A cross was made between a plant containing red flowers and another with a white flower. The cross yielded a 50% white-flowered plant and a 50% red-flowered plant.

Detailed explanation-3: -In Snapdragons, red flowers are dominant to white flowers. However, flowers with a heterozygous genotype (Rr) have pink flowers Leaf shape is also controlled by genetics. Fat leaves (F) are dominant to narrow leaves (f).

Detailed explanation-4: -So, the correct option is ‘incomplete dominance’

Detailed explanation-5: -Thus, the genotype of the parent with the red flower is Rr.

There is 1 question to complete.