variation and genetics

Question 1

what is a phenotype?

Answer 1

an individuals set of observable characteristics

Question 2

what causes genetic variation?

Answer 2

genetic mutation

Question 3

explain survival of the fittest

Answer 3

the different types of animals have different characteristics that they have adapted that are either good or bad. the good characteristics that have been made by adapting to the environment will be passed down to offspring.

Question 4

give a definition is “species”

Answer 4

a group of organisms that have characteristics in common and can interbreed to produce offspring

Question 5

how does evolution occur

Answer 5

through natural selection

Question 6

what is natural selection

Answer 6

natural selection explains how species change over time as a result of differences in the characteristics and survival rate of individuals

Question 7

name some key features of natural selection

Answer 7

variation, inheritance, competition, selection

Question 8

what is speciation

Answer 8

new species evolving from earlier species as a result of natural selection

Question 9

what is a fossil record

Answer 9

the history of life on earth shown by fossils

Question 10

what is a gene

Answer 10

a short section of DNA that codes for the production of a specific protein, which contributes to a particular characteristic

Question 11

what is a variation

Answer 11

the difference between individual members of a species