Inherited Disorders and Genetic Screening

Which one is Homozygous?

• The same two Alleles

• Two different Alleles

Which one is Cystic Fibrosis?

• Caused by a Recessive Allele. Results in the production of thick mucus in air passages and pancreas

• Caused by a Dominant Allele. Results in extra fingers or toes

Which of these are Advantages of Screening Embryos for disabilities?

• Stops Suffering

• Treating Disorders costs a lot

• Implies that people with disabilities are undesirable

• Its expensive

Which of these are Disadvantages of Screening Embryos for disabilities?

• Stops Suffering

• Treating Disorders costs a lot

• Implies that people with disabilities are undesirable

• Its expensive

What is the condition where a person inherits extra toes or fingers

• Polydactyl

• CF

• Huntingtons

• Parkinson's

Give the number of one person in the diagram who has

cystic fibrosis.

• 3

• 4

• 5

• 6

The chance that Mr and Mrs Brown's next child will have cystic fibrosis is

• 0%

• 25%

• 50%

• 75%

A phenotype is the...

• letter combination
• dominant gene
• recessive gene
• physical appearance

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Tt is-

• homozygous dominant
• homozygous recessive
• heterozygous
• none of these

Tags

NGSS.HS-LS3-1

What is the relationship between DNA and chromosomes?

• Chromosomes are made of DNA
• DNA is made of chromosomes
• DNA and chromosomes are the same thing.
• All of the above are correct

Tags

NGSS.HS-LS3-1