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Principles Of Inheritance And Variation

Question

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The fruit fly, Drosophila melanogaster was found to be very suitable for experimental verification of chromosomal theory of inheritance by Morgan and his colleagues because

It reproduces parthenogenetically

a single mating produces two young files

smaller female is easily recognisable from larger male

it completes life cycles life cycle in about two weeks

Solution

D.

it completes life cycles life cycle in about two weeks

The fruit fly, Drosophila melanogaster was found to be very suitable for experimental verification of chromosomal theory of inheritance by Morgan and his colleagues because
* It completes its life cycle in a very short period (ie, about two weeks).
* a single mating produces many offsprings.
* larger female is easily recognisable from the smaller male.

Some More Questions From Principles of Inheritance and Variation Chapter

Write the genotypes of man with blood group A.

What is Mendel’s monohybrid phenotypic ratio ?

Write down Mendel’s dihybrid Phenotypic ratio

Who were the rediscoverers of Mendelism ?

What are the real determinants of what an organism will become ?

What is the unique feature of F1 generation ?

What will be the genetic make up of an organism which suffers from sickle cell anaemia ?

What do the symbols square and circle in a pedigree chart indicate ?

Define heterogamy. Give an example.

How many chromosomes are found in human cells ?

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