Ch2 - 3 Biology Vocab Flashcards Preview

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Flashcards in Ch2 - 3 Biology Vocab Deck (25):
1

Upright walking primates (including humans)

Hominids

2

Long line of ancestors

lineage

3

group of individuals of the same species that live in the same place, at the same time

population

4

inherited characteristics of organisms that help them survive in their environment

adaptations

5

traits/characteristics that are passed from one generation to the next

heritable traits (inherited traits)

6

traits/characteristics that an organism obtains at some point during their life

acquired characteristics

7

TRUE or FALSE:
Typically, more offspring are born in a population than can survive.

TRUE

8

TRUE or FALSE:
Individual organisms within a population vary from one another in characteristics that are inherited.

TRUE

9

Which of these statements is TRUE:
1) Natural Selection describes how populations change over time.
2) Natural Selection describes how individuals change over time.

The first statement is true:
1) Natural Selection describes how populations change over time.

10

TRUE or FALSE:
Most resources available in any natural environment are unlimited.

FALSE!!!
Most resources are limited. Therefore, there must be competition to obtain those resources!

11

When humans choose the individuals that will reproduce based on certain traits.

Artificial Selection

12

A scientist who investigates biological change by studying fossils and the history of Earth.

Paleobiologist

13

A scientist who investigates biological change by studying ancient hominids and living primates (including humans).

Physical anthropologist

14

study of how the layers on Earth are organized and the fossils that are found in those layers

stratigraphy

15

Any preserved part or impression of an organism that lived in the past

fossil

16

Inferring the age of fossils relative to one another by comparing the Earth layers in which they are found.

relative dating
(or stratigraphy)

17

Using naturally occurring radioactive elements to empirically determine the age of fossils.

Absolute dating
(or direct dating)

18

The scientific timespan of the Earth's history

geologic time

19

A comprehensive explanation of a set of natural phenomena supported by vast amounts of evidence from multiple sources.

scientific theory

20

A tentative, but logical prediction based on observations

hypothesis

21

common structures in different organisms

homologous structures

22

structures that are functional in some organisms, but seemingly useless in others

vestigial organs

23

study of the early development of organisms before they are born/hatched

embryology

24

combined genetic information for ALL the members of a population

gene pool

25

when two populations of organisms are unable to reproduce with each other

reproductive isolation
(over time, this can lead to new species)