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Principles Of Inheritance And Variation

Question
CBSEENBI12002965
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 Development of an embryo without fertilization is called as

  • Apomixis

  • Polyembryony

  • Parthenocarpy

  • Parthenogenesis

Solution

D.

Parthenogenesis

Parthenogenesis (virgin origin) is the development of an embryo from an unfertilized egg or if a spermatozoan does penetrate the egg, there is no union of male and female pronuclei. It is found in many plants (dandelions and hawk weeds) and (aphids and honey bees).

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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