Match the following:
Column – $I$ Column – $II$
$(1)$ Failure of cytokinesis $(p)$ To study inheritance of particular traits
$(2)$ Trisomy of $21$ $(q)$ Polyploidy
$(3)$ Error of metabolism $(r)$ Down's syndrome
$(4)$ Pedigree analysis $(s)$ Phenylketonuria

  • A
    $(1-p), (2-q), (3-r), (4-s)$
  • B
    $(1-q), (2-p), (3-s), (4-r)$
  • C
    $(1-q), (2-r), (3-s), (4-p)$
  • D
    $(1-p), (2-r), (3-s), (4-q)$

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In a dihybrid cross,when one pair of alleles shows incomplete dominance,the resulting genotypic ratio will be ....

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Read all the given statements carefully and determine the number of correct statements.
$(1)$ Mutations are not hereditary.
$(2)$ Male $Drosophila$ flies do not show crossing over.
$(3)$ In honeybees,the male bee is diploid.
$(4)$ In a frame-shift mutation,one nitrogen base is replaced by another nitrogen base at a specific position.
$(5)$ Genes are responsible for inheritance.

The genetic constitution of an individual is represented by:

In what context does an epistatic gene differ from a dominant gene?

Which of the following is incorrectly paired?

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