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Genetics – GK Quiz with Answers – Level 2

Medium-level genetics practice on Mendel's monohybrid cross, recessive traits, sex determination in humans and reptiles, acquired traits, fossils and homologous versus analogous organs.

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Questions, answer key and solutions.

Questions
50
Duration
30 min
Marks
50

Negative marking

Attempts
100
Access
Free
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Normal practice, or a Simulated test

Both use the same questions. Normal practice is untimed and needs no account: choose an option and the answer and solution appear at once. The Simulated test is the real computer-based format, with one 30-minute clock, a question palette and full screen, and your score, the key and the solutions arrive when you submit.

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Untimed

Every question on one page, loading as you scroll. Choose an option and see straight away whether it was right.

  • No timer. Nothing to start and nothing to submit. Stop whenever you like.
  • Answered as you choose. Tap an option and it is marked at once, with the correct answer shown.
  • Solutions in place. The explanation, and the video where one has been added, sit under the question.
  • Open to guests. Normal practice needs no sign-in.
Real exam conditions

Simulated

Timed CBT

The computer-based test format: one clock, a question palette, and a score the moment you submit.

  • A clock that does not pause. 30 minutes from the moment you begin, and the paper is submitted for you when it reaches zero.
  • Question palette. Answered, not answered and marked for review, section by section, as the real interface has it.
  • Full screen, proctored. The test takes over the screen; leaving it three times submits the paper.
  • Answers hidden until you submit. The key, the explanations and your score all arrive together at the end.

About this test

Genetics Level 2 GK Practice Quiz: Mendel's Crosses and Sex Determination

Genetics GK Quiz Level 2 is a medium-difficulty General Awareness biology set mixing Mendel's monohybrid cross, sex determination and evidence for evolution. Items come as statements, odd-one-out, matching and sequencing rather than direct recall. On Aptitude360, every question carries a worked explanation of the reasoning.

Topics tested in Genetics Level 2

  • Steps of Mendel's tall and short pea cross, including self-pollination of the first generation
  • Why no medium-height plants appeared and why short plants reappeared in the next generation
  • Appearance of plants carrying one tall and one short factor
  • Human sex chromosomes and how a child's sex is decided
  • Egg temperature deciding sex in some reptiles
  • Acquired versus inherited traits, homologous and analogous organs, and fossils as evolution clues

Important heredity concepts at this level

  • Traits are inherited as separate factors that do not blend
  • A recessive trait hidden in one generation can show up in the next
  • Asexual reproduction gives very little variation, which is why sugarcane fields look uniform
  • Odd-one-out items often test which animals share the same basic limb structure

Preparation tips for medium-level genetics

  • Work through the pea cross step by step, writing the factor pair at each stage
  • Read NOT-correct statements slowly and test each one against Mendel's findings
  • Link every evolution term to one example, such as a starving beetle for an acquired trait

Who this genetics set is for

Aspirants comfortable with genetics basics who want exam-style statement and matching practice for General Awareness biology.

FAQs about Genetics – GK Quiz with Answers – Level 2

What is a monohybrid cross?
A monohybrid cross studies the inheritance of a single pair of contrasting traits, such as tall and short pea plants. Mendel used it to show that one trait is dominant over the other.
What ratio did Mendel get in the second generation of his tall and short cross?
In the second generation, Mendel found about three tall plants for every one short plant. This showed that the short trait was hidden, not lost.
What is the difference between homologous and analogous organs?
Homologous organs have the same basic structure but different functions, like the forelimbs of frogs, lizards and birds. Analogous organs do similar jobs but have different designs, like the wings of birds and bats.
Why are acquired traits not inherited?
Acquired traits, such as weight lost through starvation, do not change the DNA of reproductive cells. So they cannot be passed on to the offspring.

Test structure

How the paper is split, and how long each part runs. A section you have finished cannot be returned to.

SectionQuestionsTime
Genetics GK Level 25030 min

Marking & rules

Total marks
50 across 50 questions.
Negative marking
A wrong answer costs marks. Leaving a question unanswered costs nothing.
Attempts
100 in total. An attempt is spent the moment you begin one.

What you get when you submit

The analysis is ready the moment you submit the paper.

Score and accuracy

Marks, percentage, right, wrong and skipped, and the time you took.

Section by section

The same figures for each section, so a weak one cannot hide in an average.

The full answer key

Every question with your answer, the right one, the working, and the video where there is one.

Where you stand

Your score against the spread of everyone else who has sat this test.

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