Variation and evolution

Question 1

what is a mutation?

Answer 1

a change in the genetic material of an organism

Question 2

what is natural selection?

Answer 2

the process of which evolution takes place.only those that are most suited to their environment Will Survive the breed and pass on their useful characteristics to the Offspring

Question 3

what is selective breeding?

Answer 3

speed up natural selection by selecting animals or plants for breathing that have required characteristics

Question 4

give examples of variation within a species controlled by only genes inherited?

Answer 4

eye color

Question 5

give some examples of variation within a species controlled by only environmental factors

Answer 5

a scar

Question 6

define species

Answer 6

organisms that can reproduce to form fertile offspring

Question 7

give a characteristic which is bread for in plants

Answer 7

disease resistance

Question 8

what is a potential danger of selective breeding?

Answer 8

selective breeding can lead to inbreeding where some breeds are particularly prone to disease or inherited defects

Question 9

how have plants been genetically engineered?

Answer 9

to be resistant to disease or to produce bigger better fruits

Question 10

what scientific term describes a change in a gene?

Answer 10

mutation