Principles of Evolution

Question 0

Gene

Answer 0

Molecular unit of heredity

Question 1

Chromosomes

Answer 1

In the cell nucleus. Packaged, thread like DNA. Females have XX and makes have XY )ugh))

Question 2

Mutation

Answer 2

Features not seen in either parent, often non advantageous, little mutations can be neutral and persist until they are positive ….

Question 3

Variation

Answer 3

Basic mechanism of evolution !! Naturally occurring genetic differences among individuals of the same species

Question 4

Fitness

Answer 4

Composed of viability, developmental rate, fecundity

Question 5

Viability

Answer 5

Do you survive to reproductive maturity?

Question 6

Developmental rate

Answer 6

How fast you get to reproductive maturity

Question 7

Fecundity

Answer 7

How many offspring you actually produce

Question 8

Genotype

Answer 8

Actual genetic makeup/on chromosomes

Question 9

Phenotype

Answer 9

Physical expression of a gene

Question 10

Species

Answer 10

Group of actually or potentially interbreeding populations reproductively isolated from other such groups

Question 11

Speciation

Answer 11

How new species arise
Allopatric: formed from a new geographical area
Sympatric: when new species arise without geographic isolation

Question 12

Phyletic gradualism

Answer 12

Model of evolution which theorizes that most speciation is slow uniform gradual

Question 13

Punctuated equilibrium

Answer 13

Theory in evolutionary biology which proposes that most species will exhibit little net evolutionary change for most of their geo history… Remain in extended state called stasis

Question 14

Morphology

Answer 14

Morphological stability in punctuated equilibrium. Branch of bio dealing with form / structure / specific features of organisms.

Question 15

Stasis

Answer 15

A block of little or no evolutionary Change in a species.