Pedigrees, Karyotypes, & Genetic Disorders

This karyotype is taken from a ________.

• female with Turner's syndrome (1 X)

• male with Down's syndrome (XY with three 21)

• female with Down's syndrome (XX with three 21)

• normal female

Trisomy 21 means you have what?

• Three copies of chromosome 21
• Twenty one copies of chromosome 3
• Three omies and 21 means
• Two copies of chromosome 21

The chromosomes that determine all traits, except gender are called:

• Karyotypes
• Autosomes
• Sex Chromosomes

How many generations are shown in this pedigree?

• 1
• 2
• 3
• 4

There are no carriers for Huntington's Disease- you either have it or you don't. Is Huntington's disease caused by a dominant or recessive allele?

• Dominant
• Recessive

What would indicate a normal human male?

• XX
• X
• XY
• XXY

If this pedigree shows an autosomal recessive disorder, what MUST the genotype of individual II-3 be?

• HH
• Hh
• hh
• None of the above

How many alleles does a person have for a trait?

• 1

• 2

• 3

• 4

What is the mode of inheritance shown here?

• Recessive because it "skips" a generation

• Dominant because it shows up in every generation

What is the genotype of the great-grandfather? (Individual I-2)

• A_
• aa
• Aa
• AA