Most DNA is located in the cell nucleus

What are the four bases of DNA?

Which bases are correctly paired? Select all that apply

What is the double helix structure of a DNA strand made up of?

Humans have between 20,000 and 25,000 genes in their bodies.

Every person has FOUR copies of each gene, TWO from each parent.

What is genetics?

In human beings, most cells have how many pairs of chromosomes?

Around 49.5 percent of the world's population is female.

Select the answer that lists the Kingdoms.

Select the answer that lists the Domains

Bacteria are simple-celled microbes

Bacteria are classified into how many groups?

Bacteria produce by binary fission.

Fungi are broken up into how many groups?

Invertebrates are:

Vertebrates are:

__________ are animals that live on land and water.

__________ are vertebrate animals including snakes, lizards, crocodiles, turtles, and tortoises. They have dry, scaly skin and lay soft eggs on land.

__________ are warm-blooded, egg-laying vertebrates that have feathers, wings, and a beak.

____________ are limbless cold-blooded vertebrate animal with fins and gills that only lives in water

____________ are warm-blooded vertebrate animals that have hair or fur and can make milk for their young