Download App

STD 12 - 4. principal of inheritance and variation — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 4. principal of inheritance and variation1 Mark
MCQ
A man receives his $X$ chromosomes from
  • ✓
    His mother only
  • B
    His father only
  • C
    Both his mother and father
  • D
    Either his mother or his father
✓

Answer

Correct option: A.
His mother only
a
(a)Human male has two sex chromosomes $X$ and $Y$. $Y$ chromosome is contributed by his father that determines the masculanity, the rest $X$ chromosome is donated by his mother only.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from STD 12 - 4. principal of inheritance and variation→STD 12 - 4. principal of inheritance and variation — all question types→Biology STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The main reason for the success of Mendel was
→
Monosomy and trisomy can be represented as
→
Biodiversity shows by increase in forest density.
→
Maximum survival and reproductive capacity shown by a population under optimal environmental conditions is called
→
Adenosine Deaminase $(ADA)$ deficiency can be cured by $\ldots A \ldots$ and $\ldots B . \ldots$ but it is not fully curative. Here $A$ and $B$ can be
→
The term 'molecular scissors' generally refers to:
→
The pesticides are the chemicals that kill
→
Southern blotting is done for
→
At which of the following places does the restriction enzyme EcoRI cut DNA?
→
Which is a microbial insecticide
→