Genetic Disorders Flashcards Preview

Biology 2 > Genetic Disorders > Flashcards

Flashcards in Genetic Disorders Deck (7)
Loading flashcards...
1
Q

What are the effects of cystic fibrosis?

A

> it affects the cell membranes, causing a thick sticky mucus to form

> affects the pancreas and the process of digestion

> affects the breathing system causing frequent infections in the lungs.

2
Q

What is cystic fibrosis caused by?

A

A recessive allele

3
Q

Define genotype

A

The combination of alleles to determine a characteristic.

4
Q

Define phenotype

A

The characteristic expressed by the genotype

5
Q

What does heterozygous mean?

A

The two alleles for a genotype are different

> the characteristic is determined by the dominant allele

6
Q

What does homozygous mean?

A

The two alleles for the genotype are the same

> the phenotype can be determined by either the dominant or recessive allele

7
Q

What is polydactyly caused by?

A

> dominant allele