CBSE-CLASS-XII SERIES
Biology

Replication

5 previous year questions.

Volume: 5 Ques
Yield: Medium

High-Yield Trend

5
2024

Chapter Questions
5 MCQs

01
PYQ 2024
easy
biology ID: cbse-cla
If the cells in the leaves of a maize plant contain 10 chromosomes each, write the number of chromosomes in its endosperm and zygote. Name and explain the process by which an endosperm and a zygote are formed in maize.
02
PYQ 2024
medium
biology ID: cbse-cla
(a) Why does DNA replication occur within a replication fork and not in its entire length simultaneously?
03
PYQ 2024
medium
biology ID: cbse-cla
Draw a schematic diagram of the \textit{E.coli vector pBR 322 and mark the following in it:}
(a) ori
(b) rop
(c) ampicillin resistant gene
(d) tetracycline-resistant gene
(e) restriction site Bam HI
(f) restriction site EcoRI
04
PYQ 2024
hard
biology ID: cbse-cla

A population of snakes lived in a desert with brown sand. Study the drawings given below showing the change in the population from β€˜one’ to β€˜two’ over time and answer the question that follows. Brown snakes and Grey snakes are represented by alleles A/a (Dominant/recessive).Β 

(a) If the frequency of the recessive trait is 9% in population-one, work out the frequency of homozygous dominant and heterozygous dominant snakes.
Β 

05
PYQ 2024
medium
biology ID: cbse-cla
Why does DNA replication occur within a replication fork and not in its entire length simultaneously?

About Replication - CBSE-CLASS-XII

Replication is a vital chapter for CBSE-CLASS-XII aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.

By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.

Frequently Asked Questions

Why focus on Replication PYQs?

Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.

How to best use this analysis?

Review the topic breakdown to see which sub-topics within Replication carry the most weight. Then, tackle the questions iteratively to solidify your understanding.