Variation

Question 1

What is Interspecific variation?

Answer 1

the differences between any two species

Question 2

What is Intraspecific variation?

Answer 2

the differences between members of the same species

Question 3

What are polygenic characteristics?

Answer 3

determined by many gene loci that have additive

effects on each other

Question 4

Characteristics that show continuous variation are normally …

Answer 4

polygenic

Question 5

What are monogenic characteristics?

Answer 5

determined by a single gene loci

Question 6

Characteristics that show discontinuous variation are usually …

Answer 6

monogenic

Question 7

What causes variation

Answer 7

genetic and environmental factors

Question 8

What is the main source of genetic variation?

Answer 8

mutations, which can

produce diferent alleles of genes.

Question 9

What causes genetic variations?

Answer 9

1.mutations
2.meiosis
(independent assortment and crossing over)
3.random fertilisation of gametes during sexual reproduction to create new
allele combinations.

Question 10

How can the environment influence the way an organism’s genes are expressed?

Answer 10

biological factors such as

predators or non-biological factors such as sunlight.