Edward's syndrome, Patau's syndrome and Down's syndrome are due to

  • A

    Mutation due to malnutrition

  • B

    Change in sex chromosomes

  • C

    Change in autosomes

  • D

    Change in both sex chromosomes and autosomes

Similar Questions

$A$ : Occasionally mammary glands are functional in males and the condition is called gynaecomastia.

$R$ : Decreased testosterone in later life may also lead to gynaecomastia. It is usually due to perturbation of estrogen to androgen ratio.

Experimental evidence of chromosomal theory of inheritance was given by

Which one is a sex-linked disease

Frequency of Down’s syndrome increases when the maternal age is

Who has putforth Mendel's conclusions in the form of laws