B5 Flashcards
1
Q
What is DNA and where is it found?
A
DNA (deoxyribonucleic acid) is a molecule that carries genetic information, found in the nucleus of cells.
2
Q
Describe the structure of DNA.
A
DNA is a double helix made up of two strands with paired bases: adenine (A) with thymine (T), and cytosine (C) with guanine (G).
3
Q
What is a gene?
A
A gene is a section of DNA that codes for a specific protein or trait.
4
Q
Define genotype and phenotype.
A
Genotype is the genetic makeup of an organism, while phenotype is the observable traits resulting from the genotype.
5
Q
What is natural selection?
A
Natural selection is the process where organisms better adapted to their environment tend to survive and reproduce, passing on beneficial traits.
