Advertisements
Advertisements
प्रश्न
A male plant bearing red flowers was crossed with a female plant bearing yellow flowers. In the F1 generation, all the flowers were orange in colour.
Give a reason to explain the change of colours in F1 generation.
उत्तर
Incomplete dominance explains the colour variation in F1 generation. In incomplete dominance, a type of gene interaction, both alleles of a gene at a locus are only partially expressed. Here in F1 all the progeny obtained heterozygous Ry when pure red flower RR was crossed with yellow blossom yy. They start to turn orange.
APPEARS IN
संबंधित प्रश्न
A flower of brinjal plant following the process of sexual reproduction produces 360 viable seeds.
Answer the following questions giving reasons:
(a) How many ovules are minimally involved?
(b) How many megaspore mother cells are involved?
(c) What is the minimum number of pollen grains that must land on stigma for pollination?
(d) How many male gametes are involved in the above case?
(e) How many microspore mother cells must have undergone reduction division prior to dehiscence of anther in the above case?
Give an example of a plant which came into India as a contaminant and is a cause of pollen allergy.
Anther is typically ______.
Pollen grain is liberated at ______.
Number of prothallial cells present in male gametophyte of flowering plant is ______.
Point out the odd one.
Pollen grain is a ______.
Mark the odd one.
Heliophytes are ______.
An organic substance that can with stand environmental extremes and cannot be degraded by any enzyme is ______.
