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Sex-linked Inheritance (Hemophilia, Color Blindness) MCQs

Prepare for Sex-linked Inheritance (Hemophilia, Color Blindness) MCQs with verified questions, past-paper solutions, and conceptual explanations for CSS, PMS, FPSC, PPSC, and NTS examinations.

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Topic Notes: Biology

These notes summarize the key preparation context before you attempt the MCQs. Review the topic focus, then practice the questions below with answers and explanations.

Quick Overview

Practice Biology MCQs to prepare for CSS, PMS, FPSC, PPSC, SPSC, KPPSC, BPSC, NTS, and university entry tests in Pakistan. This section covers key theoretical concepts, syllabus topics, and repeated past paper questions related to Biology.

Topic-Wise Breakdown
Structured subject modules organized by difficulty and exam frequency.
Verified Answer Keys
Detailed explanations cross-referenced with standard textbooks and commission keys.
Complete Coverage
Covers fundamental definitions, advanced problem-solving, and recent exam trends.

How to Prepare Biology MCQs for Competitive Exams

Review each sub-topic systematically. Start with fundamental concepts, practice multiple-choice question sets under timed conditions, and note down questions you missed in your revision tracker. Select a specific topic from the list below to begin practice.

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327941
Of the three numbers, the first is twice the second and is half of the third. If the average of the three numbers is 56, then the difference between the first and third numbers is:
327942
The average age of a husband and his wife was 23 years at the time of their marriage. After five years, they have a one-year-old child. The average age of the family now is:
327943
A library has an average of 510 visitors on Sundays and 240 on other days. What is the average number of visitors per day in a month of 30 days beginning with a Sunday?
327944
The average of first 10 multiples of 3 is:
327945
In an exam, the average marks of 40 students is 72. Later, it was found that the marks of three students were misread as 68, 75, and 73 instead of 64, 62, and 84 respectively. Find the correct average.
327946
The average age of three boys is 15 years. If their ages are in the ratio 3:5:7, what is the age of the youngest boy?
327947
The average of 50 numbers is 38. If two numbers, namely 45 and 55, are discarded, the average of the remaining numbers is:
327948
The average of 5 quantities is 10 and the average of 3 of them is 8. What is the average of the remaining 2 quantities?
327949
The average of first 5 prime numbers is:
327950
A man drives to a city at a speed of 40 km/h and returns along the same route at a speed of 60 km/h. What is his average speed for the entire journey?