Homework #37: Humans vs Bacteria Day 28

Front

What is an evolutionary tree?

Back

An evolutionary tree, or phylogenetic tree, is a diagram that shows the evolutionary relationships among various biological species based on their physical or genetic characteristics.

Front

Which organism is most distantly related to humans according to evolutionary trees?

Back

Crayfish are considered most distantly related to humans in the context of evolutionary trees.

Front

What does it mean for an organism to be a 'closest relative'?

Back

A closest relative is an organism that shares a more recent common ancestor with another organism, indicating a closer evolutionary relationship.

Front

Who is the closest relative of humans according to the evolutionary tree?

Back

The hare is identified as the closest relative of humans.

Front

What is genetic variation?

Back

Genetic variation refers to the differences in DNA sequences among individuals within a population, which can lead to different traits.

Front

What is a source of genetic variation?

Back

Mutations are a primary source of genetic variation, introducing new genetic material into a population.

Front

What does 'common ancestor' mean?

Back

A common ancestor is an ancestral species from which two or more species have evolved.

Front

Where is the common ancestor of T. rex and frogs located on an evolutionary tree?

Back

The common ancestor of T. rex and frogs is located at Point B on the evolutionary tree.

Front

What is the significance of Point A, B, C, and D in an evolutionary tree?

Back

Points A, B, C, and D represent different nodes where species diverged from their common ancestors.

Front

What is the relationship between T. rex and Alligator?

Back

T. rex and Alligator are closely related, sharing a more recent common ancestor compared to other species.