Question

1. Evolution is the change in the genetic makeup of a(n) a individual b. population c. community d. ecosystem 2. Natural selection results in a. increased genetie variation b. a population that is better adapted to a future environment c. a population that is adapted to its current environment d. an increase in the size of a population 3. Which of the following is not requirement of natural selection? a characteristics of organisms are genetically determined b. more offspring are produced than can survive c. genetic variation within a population d. catastrophic events 4. Evolutionary fitness is measured by which characteristic of an organism? a. physical strength b. age at death (longevity) c. number of fertile offspring d. intelligence

Answer 1

1) evolution is the change in the genetic makeup of a (n)
a)individual
b)population
c)community
d)ecosystem

answer: population

(Evolution is a process that results in changes in the genetic material of a population over time. )

2) natural selection results in--
a)increased genetic variation
b)a population that is better adapted to a future environment
c)a population that is adapted to its current environment
d)an increase in the size of a population

answer: c)a population that is adapted to its current environment

(Natural selection leads to adaptation, that is, to a population dominated by organisms that are anatomically, behaviorally, and physiologically well suited to survive and reproduce in a specific environment.)

3)which of the following is not a requirement of natural selection?
a)characteristics of organisms are genetically -determined
b)more offsprings are produced than can survive
c)genetic variation within a population
d)catastrophic events

answer: d)catastrophic events

Remaining all are needed for natural selection

4)evolution fitness is measured by which characteristic of an organism?

a)physical strength
b)age at death(longevity)
c)number of fertile offspring
d)intelligence

answer:c)number of fertile offspring

(The central concept of natural selection is the evolutionary fitness of an organism. Fitness is measured by an organism's ability to survive and reproduce, which determines the size of its genetic contribution to the next generation.)