Biology Flashcard

Front

What is a mutation in DNA?

Back

A mutation is a change in the DNA sequence that can lead to variations in traits.

Front

What is the role of DNA in living organisms?

Back

DNA contains the genetic instructions for the development, functioning, growth, and reproduction of all known organisms.

Front

What is organic evolution?

Back

Organic evolution refers to the process by which species change over time through genetic variation and natural selection.

Front

What evidence supports the theory of evolution?

Back

Similarities in DNA, protein structures, and anatomical features among different species provide evidence for evolution.

Front

What is the significance of ribosomes in cells?

Back

Ribosomes are the cellular structures responsible for protein synthesis.

Front

What are the four types of nucleotide bases in DNA?

Back

The four types of nucleotide bases in DNA are adenine (A), thymine (T), cytosine (C), and guanine (G).

Front

What is the difference between DNA and RNA?

Back

DNA is double-stranded and contains thymine, while RNA is single-stranded and contains uracil instead of thymine.

Front

What is a gene?

Back

A gene is a segment of DNA that contains the instructions for making a specific protein.

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is genetic variation?

Back

Genetic variation refers to the differences in DNA sequences among individuals within a population.