There are five daughters and no son in a family. It may be due to

  • A

    Father produced only $X$ containing sperms

  • B

    Father produced no sperms at all

  • C

    $Y$ type sperms are weaker and not effective

  • D

    By chance each time $X$ sperm fertilized the egg

Similar Questions

Assertion : In humans, the gamete contributed by the male determines whether the child produced will be male or female.

Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.

  • [AIIMS 2005]

Assertion : In humans, the gamete contributed by the male determines whether the child produced will be male or female.

Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.

  • [AIIMS 2015]
  • [AIIMS 2017]

Initial clue about the genetic/chromosomal mechanism of sex-determination can be traced back to some of the experiments carried out in

$A$ : $XO$ type sex determination is found in large number of insects.
$R$ : Some of the sperms bear the $X-$chromosome whereas some do not