Examlex
According to the text,about ____ of 18- to 23-year-olds report having had two or more sexual partners in the past year.
Zebrafish
A small freshwater fish used as a model organism in scientific research due to its genetic similarity to humans and its transparent embryos which allow easy observation of developmental processes.
Restriction Enzyme
An enzyme that cuts DNA at specific recognition nucleotide sequences, widely used in molecular biology.
Reverse Transcriptase
An enzyme that catalyzes the transcription of RNA into DNA, allowing retroviruses to integrate into the host genome.
CDNA
Complementary strand of DNA synthesized from an RNA template by the enzyme reverse transcriptase.
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