CBSE-CLASS-XII SERIES Biology
Genetic Disorders
3 previous year questions.
Volume: 3 Ques
Yield: Medium
High-Yield Trend
3
2024 Chapter Questions 3 MCQs
01
PYQ 2024
medium
biology ID: cbse-cla
A person with trisomy of the 21st chromosome shows:
(i) Furrowed tongue
(ii) Characteristic palm crease
(iii) Rudimentary ovaries
(iv) Gynaecomastia
Select the correct option from the choices given below:
(i) Furrowed tongue
(ii) Characteristic palm crease
(iii) Rudimentary ovaries
(iv) Gynaecomastia
Select the correct option from the choices given below:
1
(ii) and (iv)
2
(i), (ii), and (iv)
3
(ii) and (iii)
4
(i) and (ii)
02
PYQ 2024
medium
biology ID: cbse-cla
How has the use of \textit{Agrobacterium as vector helped in controlling \textit{Meloidogyne incognita} infestation in tobacco plants? Explain in correct sequence.}
03
PYQ 2024
medium
biology ID: cbse-cla
Name the mechanism of evolution that must have operated so that population-two evolved from population-one.