WU: Genes, DNA, & Chromosomes review

Front

What is DNA?

Back

DNA (Deoxyribonucleic Acid) is the molecule that carries the genetic instructions for life. It is composed of two strands that coil around each other to form a double helix.

Front

What are genes?

Back

Genes are segments of DNA that contain the instructions for building proteins, which determine the traits and characteristics of an organism.

Front

What are chromosomes?

Back

Chromosomes are long, thread-like structures made of DNA and proteins that contain many genes. Humans have 23 pairs of chromosomes.

Front

What is the function of the nucleus in a cell?

Back

The nucleus acts as the control center of the cell, housing the cell's DNA and coordinating activities such as growth, metabolism, and reproduction.

Front

What is a cell?

Back

A cell is the smallest unit of life that can function independently and perform all necessary life processes.

Front

How do genes influence traits?

Back

Genes provide the instructions for the production of proteins, which play a crucial role in determining an organism's physical and functional traits.

Front

What is the relationship between DNA, genes, and chromosomes?

Back

Genes are sections of DNA, and chromosomes are structures that contain tightly coiled DNA.

Front

What is the role of DNA in heredity?

Back

DNA is passed from parents to offspring, carrying genetic information that influences inherited traits.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins, potentially affecting an organism's traits.

Front

What is the structure of DNA?

Back

DNA has a double helix structure, consisting of two strands made up of nucleotides, which include a sugar, a phosphate group, and a nitrogenous base.