MCQ
Crossing over causes
- AExpression of recessive genes
- BSynapsis between homologous chromosomes
- ✓Recombination between linked genes
- DLinkage between dominant genes
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$R$ - $AIDS$ is caused by $HIV$.
$I$. There are many side effects of tubectomy and vasectomy
$II$. Purpose of tubectomy is to prevent egg formation
$III$. The most important component of the oral contraceptive pill is progesterone
$IV$. Contraceptive oral pills help in birth control by preventing ovulation