CBSE 2025 · Region 6 · Set 2 · Q6 · 1 mark
If a natural population of $\displaystyle 60$ individuals is in Hardy-Weinberg equilibrium for a gene with two alleles B and b, with the gene frequency of allele B of $\displaystyle 0.7$, the genotype frequency of Bb will be :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle 0.42$
EvolutionHardy-Weinberg PrincipleApplymcqmedium
More from Evolution
- Study the given chart showing evolution of plants. Answer the following questions: Identify the plant which…2026 · asked 3×
- Highly conserved proteins such as Haemoglobin and Cytochrome-C provide the best biochemical evidences to…2025 · asked 3×
- Darwin's theory of Natural Selection is widely accepted but some limitations have been identified by modern…2023 · asked 3×
- "The process of evolution of different species in a given geographical area starts from a point and literally…2025 · asked 3×
- A few stages and their respective time period in the evolutionary history of human beings are mentioned in…2025 · asked 3×
- Whose skulls 'A', 'B', and 'C' are shown below? Which of the two are more similar to each other? Name the (i)…2024 · asked 3×
- Name the extinct ancestor of humans who ate only fruits and hunted with stone weapons.2026 · asked 3×
- At which stage during evolution did human use hides to protect their bodies and buried their dead?2023 · asked 3×
CBSE Class 12 Biology past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.