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Principles of Inheritance and Variation

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Which one from those given below is the period for Mendel's hybridization experiments?

  • 1856 - 1863

  • 1840 - 1850

  • 1857 - 1869

  • 1870 - 1877


1856 - 1863

2234 Views . 3 Shares

What for symbols AA and Aa stand ?

AA : Homozygous dominant, Aa : Heterozygous dominant.
772 Views . 11 Shares

Name one trait that does not blend.

Sex trait .
1181 Views . 4 Shares

Mention the phenomenon of pleiotropy by giving an example.

Pleiotropy. When one gene controls more than one phenotypic character it is termed as pleiotropy.

Example : Sickle cell anaemia.

825 Views . 7 Shares

Name the plant that shows incomplete dominance in respect of the colour of its flower.

The plany which shoes incomplete dominace in respect of the colour of its flower is -

Snapdragron ( Antirrhinum majus)


Mirabilis jalapa (Four-O- Clock plant ).
1012 Views . 11 Shares

Give one example of genetic trait for each of the following in humans : (i) Lethality (ii) Multiple allelism.

(i) Lethality : Sickle cell anaemia.

(ii) Multiple allelism : ABO blood groups.

815 Views . 5 Shares

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