A normalvisioned man whose father was colour blind, marries a woman whose father was also colourblind. They have their first child as a daughter. What are the chances that this child would be colour blind ?
$1$
Zero percent
$0.25$
$0.5$
Study the given pedigree chart and select the correct option of the given question.
$(1)$ Is the trait recessive of dominant ?
$(2)$ is the trait sex linked or autosomal ?
The most important example of point mutation is found in a disease called
Match the following - (w.r.t. Pedigree analysis)
Column $-I$ | Column $-II$ |
$a.$ Solid symbol | $(i)$ Carrier of sex linked trait |
$b.$ Horizontal line between symbols | $(ii)$ Offspring |
$c.$ Horizontal line above the symbols | $(iii)$ Trait to be studied |
$d.$ Dot in centre | $(iv)$ Parents |
The most striking example of point mutation is found in a disease called
Phenyketonuria is a genetic disorder of