Advertisements
Advertisements
प्रश्न
Give reasons for the appearance of new combinations of characters in the F2 progeny.
उत्तर
The reason for the appearance of new combinations in the F2 generation is the Law of Independent Assortment which states that when two pairs of traits are combined in a hybrid, one pair of character segregates independent of the other pair of character.
The two or more genes are inherited independent of each other and they recombine in the zygote to form new combinations in F2 generation. For example, when a tall pea plant with round seeds is crossed with a short pea plant with wrinkled seeds, the gene controlling plant height (tall/short) segregate independent of the gene controlling seed shape (round/wrinkled) and they recombine in the zygote to form new combinations (tall and wrinkled seeds and short and round seeds).
APPEARS IN
संबंधित प्रश्न
The F2 progeny of a monohybrid cross showed phenotypic and genotypic ratio as 1:2:1 unlike that the Mendel’s monohybrid F2 ratio. With the help of a suitable example, work out a cross and explain how it is possible.
Explain the law of independent assortment with a suitable example.
9 : 3 : 3 : 1 ratio is due to ______
How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?
Which of the following crosses will give tall and dwarf pea plants in same proportions?
In the human blood grouping, the four basic blood types are type A, type B, type AB, and type O. They are ______
Give the basic features of the mechanism of inheritance.
A gene showing dominance has:
Give statement of the law of dominance.
In parents, mendelian factors occur in pairs, but they segregate during ______.
