NET Biology MCQs

Stop codons do not encode amino acids.
They recruit release factors to end translation.

Genes may encode proteins or functional RNA molecules.
Their expression is regulated.

Alleles occupy the same locus on homologous chromosomes.
They may produce different trait variants.

Genotype refers to allele combinations.
Phenotype results from genotype and environment.

Phenotype includes structural, biochemical, and behavioral traits.
It is influenced by genes and environment.

The genetic code is read in triplets.
Each codon has a defined meaning.

The anticodon pairs with the codon during translation.
This ensures delivery of the correct amino acid.

AUG codes for methionine and usually serves as the start codon.
It establishes the reading frame.

The parental strands separate and serve as templates.
Each completed double helix preserves one original strand.

Helicase breaks hydrogen bonds between base pairs.
It opens the replication fork.

DNA polymerase extends a new strand using a template.
It adds nucleotides in the 5′ to 3′ direction.

Ligase seals breaks in the sugar-phosphate backbone.
It creates a continuous lagging strand.