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Principles of Inheritance and Variation

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Biology

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

Sweet potato is homologous to 

  • potato

  • colocasia

  • ginger

  • turnip


D.

turnip

Sweet potato (Ipomoea batatas) and turnip (Brassica rapa)both are roots. However, sweet potato is tuberous adventitious root while turnip is napiform tap -root.

Sweet potato (Ipomoea batatas) and turnip (Brassica rapa)both are roots. However, sweet potato is tuberous adventitious root while turnip is napiform tap -root.

510 Views

What for symbols AA and Aa stand ?

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

Name one trait that does not blend.

Sex trait .
1181 Views

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

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

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)

Or 

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