CB3c Alleles

Question 1

Alleles

Answer 1

Are different forms of the same gene

Question 2

How many copies does a body cell contain if every gene?

Answer 2

Two

Question 3

How does the idea of alleles help to explain why we all look different?

Answer 3

humans have a different combinations of alleles giving us slightly different characteristics

Question 4

If both alleles for one gene are the same, an organism is…

Answer 4

homozygous

Question 5

If the alleles are different, the organism is…

Answer 5

heterozygous

Question 6

Dominant

Answer 6

Describs an allele that will always affect a phenotype as opposed to a recessive allele that will not be seen if a dominant allele is present

Question 7

Recessive

Answer 7

Describes an allele that will only affect the phenotype if the other allele is also recessive

Question 8

Genotype

Answer 8

The alleles that make up a given feature

Question 9

Phenotype

Answer 9

The characteristics that we see

Question 10

Gene

Answer 10

A section of a chromosome which controls a particular feature