People with Turner's Syndrome do not have XX chromosomes, but they have...
1 X chromosome
100
Draw a female in a pedigree chart.
Plain circle.
100
Why are X-linked traits more common in males?
Females have XX chromosomes, so they have another copy of the gene on another X chromosome. Males only have 1 X chromosome.
100
During normal meiosis, each gamete is suppose to have exactly __ copy/copies of a chromosome.
One
100
Albinism is a recessive trait. Draw a pedigree of a carrier man marrying a carrier woman.
Answer will vary according to pictures.
200
Three copies of chromosome 21 results in ______ ________ and is also called ________ __.
Down's Syndrome, Trisomy 21
200
A filled box indicates...
A male with the expressed trait.
200
What is the gender of this person's karotype?
Female
200
Nondisjunction happens when...
homologous chromosome pairs do not separate during meiosis.
200
Albinism is a recessive trait. A carrier man has children with a carrier woman. What is the % chance their child will have albinism?
25%
300
XXY results in...
Kleinfelter's/Klinefelter's Syndrome
300
If a heterozygous male (Hh) married a homogenous recessive female, draw all possible combinations of their children with pedigree symbols.
Answers vary by picture
300
What is the gender of this person's karotype?
Female
300
Nondisjunction results in...
a gamete with an inappropriate number of chromosomes.
300
DNA Fingerprinting does not involve which of the following?
- Cutting of the DNA
- Running DNA across a gel
- Comparing DNA
- Checking the hair color of a person
- Each DNA fingerprint is unique
Checking the hair color of a person
400
In a pedigree, a shaded box means...
A male with the recessive trait OR a male with the expressed trait.
400
Draw a pedigree chart with one homozygous dominant male married to a homozygous recessive female with 3 carrier male OR female offspring.
Answers vary by picture
400
What is chromosomal disorder does this karyotype show?
Kleinfelter's Syndrome/Klinefelter's Syndrome
400
Monosomy means...
only 1 copy of a chromosome
400
Is a widow's peak a genetic or learned trait?
Genetic trait
500
Hemophilia is an example of...
a X-linked trait
500
The dimple chin is a dominant trait. Using the picture on the board, indicate what the genotype and phenotype of the two sons are.
Heterozygous (Cc), dimple chin.
500
Autosomal chromosomes are not responsible for which of these traits? Eye color, colorblindness, hair color, shape of nose, size of feet.
Colorblindness
500
Why can't people with Turner's syndrome have children? (Think back to the notes and video!)
Their single X chromosome does not allow for reproductive organs to develop properly.
500
How does environment influence genetic expression?