1.
A _______ involves a change in a single base whereas a ________ involve a segment of a chromosome, a whole chromosome or a set of chromosomes.: point mutation... chromosomal mutation
2.
A carrier of a genetic disorder who does not show symptoms is most likely to be: heterozygous for the trait and able to transmit it to offspring
3.
A chart that shows the relationships among parents and children over more than one generation and is used for genetic analysis is called: a pedigree
4.
A female carrier of colorblindness is: heterozygous
5.
A mutation that occurs on chromosomes #1-22 is: an autosomal disorder
6.
A mutation that occurs on the sex chromosomes is: a sex-linked disorder
7.
A testcross is: a mating between an individual of unknown genotype and an individual homozygous recessive for the trait of interest
8.
Amniocentesis and choriionic villus sampling allow for _______ and _________ of the fetus so that it can be tested abnormalities.: karyotyping... biochemical testing
9.
Any gene located on a sex chromosome: is called a sex-linked gene
10.
color blindness: unable to distinguish red & green colors
11.
cystic fibrosis: thick heavy mucus clogs lungs
12.
Dr. Smith's parents have normal hearing. However, Dr. Smith has an inherited form of deafness. Deafness is a recessive trait that is associated with the abnormal allele d. The normal allele at this locus, associated with normal hearing, is D. Dr. Smith's parents could have which of the following genotypes?: Dd and Dd
13.
Duchenne muscular dystrophy: missing a protein required for muscle formation
14.
Fruits that are larger than normal (such as a 10 lb lemon) are results of: polyploidy
15.
hemophilia: missing a protein that causes the blood to clot
16.
How many sex chromosomes are in a human gamete?: one
17.
Huntington's disease: degeneration of nerves & breakdown of brain cells/loss of muscle control
18.
Mendel conducted his most memorable experiments on: peas
19.
Mendel's law of independent assortment states that: each pair of alleles segregates independently of the other pairs of alleles during gamete formation
20.
Most genetic disorders of humans are caused by: recessive alleles
21.
phenylketonuria: missing an enzyme that breaks down phenylalanine/results in brain damage
22.
Research since Mendel's time has established that the law of the segregation of genes during gamete formation: applies to all sexually reproducing organisms
23.
sickle-cell disease: abnormal hemoglobin causing cells to be sickle shaped
24.
Tay-Sachs disease: missing an enzyme that breaks down lipids in the brain/destroys brain cells
25.
The antibodies are ______ found ______.: proteins... in the plasma
26.
The antigens are _____ found _________.: carbohydrates... on the red blood cell
27.
The matching of A antigens with A antibodies in the blood is: agglutination
28.
The mechanism that "breaks" the linkage between linked genes is: crossing over
29.
The sex chromosome complement of a normal human male is: XY
30.
The universal blood donor is: type O
31.
The universal blood recipient is: type AB
32.
The vast majority of people afflicted with recessive disorders are born to parents who were: not affected at all by the disease
33.
When both alleles are expressed in individuals (such as chickens with black and white feathers or ABO blood types) this is called: codominance
34.
When the traits displayed is controlled by one or more genes (such as eye color, hair color, skin color) this is called: polygenic inheritance
35.
When there are 2 dominant alleles but neither is fully expressed (such as the color in snap dragons- red, white, and pink) this is called: incomplete dominance
36.
Which genetic trait is most influenced by the environment?: weight
37.
Which of the following disorders is NOT sex-linked?: sickle-cell disease
38.
Which represents a genotype for colorblindness? (C-normal, c-colorblind): XcY
39.
Why are sex-linked diseases more common in men than in women?: Men need inherit only one copy of the recessive allele on the X chromosome for the disease to be expressed
