Unit 5 MEGA Remediation

Front

What is a phylogenetic tree?

Back

A diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.

Front

What does 'natural selection' mean?

Back

A process in which organisms better adapted to their environment tend to survive and produce more offspring.

Front

Define 'genetic diversity'.

Back

The total number of genetic characteristics in the genetic makeup of a species, which contributes to the adaptability and survival of the species.

Front

What is 'Punctuated Equilibrium'?

Back

A theory in evolutionary biology that proposes that species evolve during short periods of rapid change, followed by long periods of stability.

Front

What is the significance of vestigial structures?

Back

Vestigial structures are remnants of organs or structures that had a function in an early ancestor but are now reduced or nonfunctional, providing evidence for evolution.

Front

What is the role of competition in natural selection?

Back

Competition among individuals of a species for limited resources can lead to the survival of the fittest, where only those best adapted to their environment survive.

Front

Explain the concept of 'adaptive radiation'.

Back

The process by which organisms diversify rapidly into a wide variety of forms to adapt to different environments.

Front

What is the difference between 'gradualism' and 'punctuated equilibrium'?

Back

Gradualism suggests that evolution occurs slowly and steadily, while punctuated equilibrium suggests that evolution occurs in rapid bursts followed by long periods of stability.

Front

What evidence supports the theory of evolution?

Back

Fossil records, genetic similarities, and the presence of vestigial structures all provide evidence for the theory of evolution.

Front

What is a common ancestor?

Back

A species from which two or more different species have evolved.