Start learning →

OJEE Sex Determination — practice questions

Explore 1 free Sex Determination questions in OJEE Biology. Open each question or exercise to read its content, reference answers and available explanation.

Practise Sex Determination with Quill →

Sex Determination questions and exercises with answers

Showing questions 1–1 of 1.

In humans, **sex chromosomes** are:Read the answer and worked solution →

Worked practice questions

In humans, **sex chromosomes** are:

  1. XX in male, XY in female
  2. XY in male, XX in female
  3. ZW in male, ZZ in female
  4. XO in male, XX in female
Show answer and solution

Correct answer: B. XY in male, XX in female

Humans (and other mammals) follow XY sex determination: females XX, males XY. The Y chromosome carries the SRY gene that triggers male development. (Birds use the ZW system, with females ZW.)

Open this question →

How to practise

  1. Choose a Sex Determination question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Biology topics

Molecular Basis of InheritanceSexual Reproduction in Flowering PlantsHuman ReproductionCell Cycle and Cell DivisionPrinciples of Inheritance and VariationPrinciples Of InheritanceReproductive HealthHuman Health and Disease