Lab Chapter 1

Question 1

Example of insect diversity and adaptation

Answer 1

nymphs form dust coat and attach dead insects to form backpack

Question 2

Adaptations

Answer 2

are traits that contribute to fitness by increasing the organisms chances of surviving and reproducing

Question 3

Charles Darwin’s proposed process of adaptation

Answer 3

Natural selection

Question 4

Mutations

Answer 4

genetic errors

Question 5

recombination

Answer 5

the mixing of genes through sex

Question 6

heritable

Answer 6

traits passed in genes from parent to offspring

Question 7

Evolution

Answer 7

traits that are changed over genertations

Question 8

3 criteria for traits to be evolved through natural selection

Answer 8

1) the trait is heritable
2) There is variation between individuals within a population of a trait
3) Variation in the trait causes some individuals to producing more offspring

Question 9

Phylogeny

Answer 9

evolutionary history and relationships

Question 10

viability

Answer 10

success in survival and acquisition of food

Question 11

4 examples of viability selection

Answer 11

1)camouflage
2)life in water
3)feeding

Question 12

Example of a fitness of zero

Answer 12

individuals that fail to mate and produce no offspring

Question 13

Sexual dimorphism

Answer 13

differences between the sexes in shape or size (a secondary sexual characteristic)

Question 14

2 principal mechanisms of sexual selection

Answer 14

1)intrasexual competition
2)mate choice