Remake of Natural Selection by connor

Unit Question:

notconnor — 2024-03-18 15:22:29 UTC

Why do populations change over time?

Chapter 1 Question:

notconnor — 2024-03-18 15:22:56 UTC

What caused the newt population to become more poisonous?

Population:

notconnor — 2024-03-19 15:09:04 UTC

A group of the same type of organism living in the same area

Feature:

notconnor — 2024-03-19 15:09:32 UTC

A characteristic that all members of a species have, which varies between organisms

Trait:

notconnor — 2024-03-19 15:09:47 UTC

A specific characteristic of an individual organism

Histogram:

notconnor — 2024-03-21 15:34:33 UTC

A visual representation used to summarize variation and distribution in a population

Variation:

notconnor — 2024-03-21 15:34:46 UTC

Any difference in traits between individual organisms

Distribution:

notconnor — 2024-03-21 15:35:01 UTC

The number of individuals with each trait in a population

Key concept 1:

notconnor — 2024-03-21 15:35:16 UTC

A population can be described by the traits present and by the number of individuals who have each trait.

Generation:

notconnor — 2024-03-22 15:09:51 UTC

A group of individuals born and living at about the same time

Key concept 2:

notconnor — 2024-03-22 15:10:12 UTC

The number of individuals with each trait in a population can change over time.

Environment:

notconnor — 2024-03-22 15:10:40 UTC

Everything (living and nonliving) that surrounds an organism

Adaptive Trait:

notconnor — 2024-03-22 15:10:59 UTC

A trait that makes it more likely that an individual will survive in a specific environment

Non-adaptive trait:

notconnor — 2024-03-22 15:11:26 UTC

A trait that makes it less likely that an individual will survive in a specific environment

Key concept 3:

notconnor — 2024-03-22 15:11:45 UTC

Over many generations, individuals with adaptive traits become more common in a population, while individuals with non-adaptive traits become less common.

Key concept 4:

notconnor — 2024-03-22 15:11:59 UTC

The traits that exist in a population determine which traits can become more common over many generations.

Camouflage:

notconnor — 2024-03-26 15:19:15 UTC

A way of hiding by looking the same as the background

Key Concept 5:

notconnor — 2024-03-26 15:19:33 UTC

Whether or not a trait is adaptive depends on the environment.

Offspring:

notconnor — 2024-04-10 15:09:05 UTC

An organism produced as a result of reproduction

Chromosome:

notconnor — 2024-04-10 15:09:52 UTC

A long piece of DNA that contains many genes

Gene:

notconnor — 2024-04-10 15:10:04 UTC

An instruction for making a protein molecule

Protein molecule:

notconnor — 2024-04-10 15:10:34 UTC

A type of large molecule that performs important functions inside organisms

Chapter 2 Question:

notconnor — 2024-04-10 15:11:05 UTC

How did the trait for increased poison level become more common in the newt population?

Key Concept 6:

notconnor — 2024-04-17 15:08:57 UTC

Biologists analyze data about environmental conditions (the causes) to explain changes in the distribution of traits in populations (the effects).

Key Concept 7A:

notconnor — 2024-04-17 15:09:18 UTC

Genes are instructions for making protein molecules and protein molecules determine an organism’s traits.

Key Concept 7B:

notconnor — 2024-04-17 15:09:36 UTC

Individuals inherit their genes from their parents. Genes, and therefore traits, in a population are passed down from generation to generation.

Natural Selection:

notconnor — 2024-04-17 15:09:55 UTC

The process by which the distribution of traits in a population changes over many generations

Key Concept 8:

notconnor — 2024-04-17 15:10:13 UTC

Individuals with adaptive traits are more likely to live longer and have offspring; individuals with non-adaptive traits are more likely to die without having offspring.

Chapter 3 question:

notconnor — 2024-04-22 15:08:32 UTC

How did a poison-level trait that wasn’t always present in the newt population become the most common trait?

Mutation:

notconnor — 2024-04-23 15:07:22 UTC

A random change to a gene that sometimes results in a new trait

Key Concept 9 (A):

notconnor — 2024-04-23 15:07:45 UTC

Mutations are changes to genes that can lead to changes to protein molecules, which can result in changes to traits.

Key Concept 9(B):

notconnor — 2024-04-23 15:08:05 UTC

Mutations to genes can sometimes introduce new traits into a population.

Key Concept 10:

notconnor — 2024-04-26 15:10:12 UTC

A new trait will only become more common in a population if it is adaptive.