Prepare for NEET Biology Cell Cycle and Cell Division with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert help for mitosis and meiosis understanding.
The genetic material distribution in daughter cells produced by amitosis, compared to the parent cell, is generally:
Exactly identical
Significantly different
Randomly distributed with no predictable pattern
Approximately equal but not necessarily identical
Which statement BEST differentiates amitosis from other forms of nuclear division like mitosis and meiosis?
Amitosis involves DNA replication, while mitosis and meiosis do not.
Amitosis produces genetically identical daughter cells, while mitosis and meiosis produce genetically diverse cells.
Amitosis occurs in somatic cells, while mitosis and meiosis occur in germ cells.
Amitosis lacks chromosome condensation and spindle formation, unlike mitosis and meiosis.
In an experiment, cells are arrested in metaphase using colchicine, a drug that inhibits microtubule polymerization. If these cells are then fused with cells in G1 phase, what is the most likely outcome for the G1 chromosomes?
The G1 chromosomes will replicate their DNA.
The G1 chromosomes will condense prematurely.
The G1 chromosomes will remain unaffected.
The G1 chromosomes will fragment.
A researcher observes a cell with significantly increased heterochromatin formation during interphase. This observation most likely suggests increased:
Transcriptional activity
DNA replication rate
Gene silencing
Protein synthesis
Which statement best describes the genetic outcome of amitosis?
Genetic material is equally distributed to daughter cells
Genetic material is distributed, but not necessarily equally
Genetic material is not replicated before division
Genetic recombination occurs
A diploid organism has a mutation affecting the formation of the synaptonemal complex. Which of the following is the MOST likely direct consequence of this mutation during meiosis?
Failure of homologous chromosome pairing
Premature separation of sister chromatids
Impaired crossing over and reduced genetic variation
Inhibition of spindle fiber formation
Which of the following cellular processes is NOT characteristic of a cell in the phase?
Active metabolism
Protein synthesis
DNA replication
Specialized function
Assertion: The coconut water in a tender coconut is rich in nutrients.
Reason: It represents the free-nuclear endosperm which nourishes the developing embryo.
Both Assertion and Reason are true and Reason is the correct explanation for Assertion
Both Assertion and Reason are true but Reason is not the correct explanation for Assertion
Assertion is true but Reason is false
Assertion is false but Reason is true
Which stage of cell division is affected if a plant cell has double the expected number of chromosomes and lacks a cell plate, and what is the resulting cellular condition?
Prophase; aneuploidy
Metaphase; apoptosis
Anaphase; nondisjunction
Telophase/Cytokinesis; polyploidy
Which of the following is NOT a characteristic outcome of mitosis?
Two identical daughter cells
Growth and repair of tissues
Same number of chromosomes as the parent cell
Reduction of chromosome number by half
