Why are plasmids ideal vectors in genetic engineering?

A gene fails to express after being inserted into a plasmid. Which component was most likely missing?

Why is E. coli commonly used in insulin production?

Which step ensures that only bacteria with recombinant DNA survive?

CRISPR-Cas9 is classified as a gene-editing tool because it:

Which situation best illustrates a risk of genetic engineering?

Why are genes with high GC content preferred during gene selection?

Gene therapy is best described as:

Why are viral vectors effective in gene delivery?

What makes recombinant DNA “chimeric”?

Which situation best demonstrates natural selection?

Why does mutation play a critical role in evolution?

Which mechanism reduces genetic differences between populations?

Genetic drift has the strongest effect when:

A population experiences a drastic reduction due to a natural disaster. This is an example of:

Which selection pattern favors extreme phenotypes?

Why can sexual selection promote traits that reduce survival?

Artificial selection differs from natural selection because it:

Which mechanism increases variation without changing DNA sequences?

Why is genetic variation essential for adaptation?

A population remains in Hardy–Weinberg equilibrium if:

If q² = 0.16, what is q?

What does deviation from Hardy–Weinberg equilibrium indicate?

Which condition violates Hardy–Weinberg assumptions?

Why does genetic drift disrupt equilibrium?

Allopatric speciation occurs when:

Which isolating mechanism involves different mating seasons?

Why does gene flow slow speciation?

Sympatric speciation can result from:

Which example best represents peripatric speciation?

The earliest known life forms existed during the:

Why was oxygen toxic to early life? 

The Cambrian explosion is significant because it: 

Dinosaurs dominated during the: 

Mammals diversified extensively after:

LUCA is best described as:

Which event enabled aerobic respiration?

The fossil record supports evolution because it: 

Homologous structures suggest: 

Vestigial structures indicate: 

Convergent evolution occurs when: 

Which evidence best supports molecular evolution? 

Darwin’s concept of “descent with modification” emphasizes: 

Which scientist provided the genetic basis for evolution? 

Why was blending inheritance a problem for Darwin’s theory? 

A pesticide kills 90% of insects, but survivors reproduce. This leads to resistance due to: 

Which process increases biodiversity most rapidly? 

Why are GM crops controversial? 

Which mechanism directly alters DNA sequences? 

Evolution is best defined as: