Which of the following occurs during zygotene of prophase I?

Practice question

Question

Which of the following occurs during zygotene of prophase I?

Options

Choose one · Correct answer highlighted

Chromosomes start pairing to form bivalents Correct Chromosomes condense into distinct structures Crossing over takes place Sister chromatids separate

Explanation

During zygotene, homologous chromosomes start pairing, a process called synapsis, forming bivalents. This follows from NCERT principle where relation explains outcome clearly for students.

Share this question

Discussion

Comments

0 comments

Please log in to join the discussion.

No comments yet. Be the first to start the discussion.

Related blogs

Guides and insights connected to this topic

NCERT 12 Zoology 06 Sep 2026

Human Health and Diseases Biology Notes - Common Diseases, Immunity, AIDS, Cancer, Drugs and Adolescence

Overview of common diseases, immune system basics, AIDS, cancer, drug effects and health considerations for adolescents.

NCERT 12 Zoology 06 Sep 2026

Molecular Basis of Inheritance Biology Notes - DNA Structure, Replication, Transcription, Genetic Code, Human Genome and DNA Fingerprinting

Notes on DNA’s double helix, replication steps, transcription process, genetic code, human genome and DNA fingerprinting.

NCERT 12 Zoology 06 Sep 2026

Principles of Inheritance and Variation Biology Notes - Mendel Laws, Monohybrid Dihybrid Cross, Linkage, Sex Determination and Genetic Disorders

Key concepts of inheritance and variation: Mendel’s laws, monohybrid and dihybrid crosses, genetic linkage, sex determination and common genetic disorders.