Genetics Quizzes Bio 211 Lab
In the human species, the locus for gender and the locus for feeling of ownership over the remote control are linked. Hogging the remote control is dominant over 'I don't care, you can have the remote'. Mark ALL possible progeny of a male who hogs the remote control and a woman who is nice enough to not complain about it. Consider that the trait is linked to the Y chromosome.
-a girl who does not care about the remote control -a boy who hogs the remote control
what should be the digits in the micropipette when you wish to draw 17ul?
170
If blood agglutinates with anti-A antibody, the blood type is
A or AB
Mark ALL options that contain possible blood types of the progeny of parents that are AB+ and O+. Know that the loci for ABO and for Rh are NOT linked.
A+, A-, B+, B-
Mrs Smith is AB+. Mr Smith is B-. Mark ALL options that contain the possible progeny.
A+, A-, B+, B-, AB+, AB-
Blood types are characterized by the ABO locus and by the Rh locus. Suppose these loci were LINKED. Mom is AB-, and dad is A+, heterozygote for the ABO locus and for the Rh locus. Assume that NO crossover occurs. The IA allele is linked to the + allele. Mark ALL possible progeny.
A+, A-, B-, AB+
Blood types are characterized by the ABO locus and by the Rh locus. Suppose these loci were NOT linked. Mom is AB-, and dad is A+, heterozygote for the ABO locus and for the Rh locus. Mark ALL possible progeny.
A+,A-, B+, B-, AB+, AB-
One of the following blood types could be the daughter of either the Smiths (AB+ and B-) or the Peters (A- and O-). Which one is it?
A-
Mrs Peters is A-. Mr Peters is O-. Mark ALL options that contain the possible progeny.
A-, O-
A recipient has blood type A+. Mark ALL of the blood types that can be donors.
A-, O-, A+,
If blood agglutinates with anti-A and anti-B antibodies, the blood type is
AB
A couple whose Rh blood types are both positive cannot have a child with positive Rh.
False
A couple whose blood types are A and B cannot have a child that has blood type O.
False
Definition of recessive alleles: alleles that exist in low abundance in a population.
False
If there is independent assortment of genes, there are fewer progeny possibilities than if the assortment was NOT independent.
False
The molecular aspect of blood types: anchored to the red-blood cell membrane is a chain of sugars called the H antigen. The H antigen differs among the ABO blood types by the presence (A, B, AB) or absence (O) of additional sugars. Blood type A: an aminosugar (N acetyl-galactosamine); type B: a sugar (galactose); type O: does not have any molecules besides the common H antigen; AB: some molecules of H antigen have N acetyl-galactosamine, others have galactose. When a person with blood type A receives blood type B, he/she will produce antibodies against the
H antigen with galactose
The genotypes possible for a person with blood type B are
IB/IB or IB/i
If blood does NOT agglutinate with anti-A and anti-B antibodies, the blood type is
O
When no agglutination is observed, the reaction between blood and antibody is called negative. Which would be the most appropriate blood type to be used as a negative control?
O-
If you wish to draw 8ul of solution, which pipetter should you use?
P-20
If blood agglutinates with anti-Rh antibody, the blood type is
Rh positive
Which of the following statements provides the strongest support for the hypothesis that HC is a genetic disease rather than a disease caused by environmental factors?
There is no significant difference in the dietary habits of individuals in affected families versus individuals in unaffected families
If loci are linked there are fewer progeny possibilities than if they were NOT linked.
True
The numbers in between brackets are blanks that need to be filled out. Albinism is a recessive trait. Although Bruna is albino, her daughter Jessica has normal skin color. Jessica marries an albino man, Warren. Use A for normal-colored skin allele and a for albino allele. Jessica's genotype is [1], and Warren's genotype is [2]. Their children's phenotypes will be approximately [3] % albino, [4] % normal.
[1] Aa [2] aa [3] 50 [4] 50
Prepare for next lab: what is PCR?
a technique used to make copies of DNA fragments
The blood type AB is and example of
codominance
Mrs Smith (phenotype: AB+) and Mr Smith (phenotype: B-) can have a child whose phenotype is A- if Mr Smith's genotype is
heterozygote for ABO and homozygote for Rh
When heterozygotes show an intermediate characteristic (e.g.: female parent has red petals, male parent has white petals, F1 has pink petals), ____ has occurred.
incomplete dominance
Suppose you are optimizing the protocol to do the blood test we did in the lab. Your task is to decide the volumes of blood and antiserum that need to be mixed for a positive reaction. In your first trial, the reaction that was supposed to be positive did not have a strong reaction. You are utilizing the correct bloods as negative and positive controls. What can you do to resolve this?
increase the volume of antiserum, and keep the volume of blood constant
If inheritance for a trait occurs according the rules of simple dominance, what will be the phenotype and the genotype of the first generation offspring (F1) when you cross a homozygous recessive trait [in this case, stubby-legged cats (l)] with a homozygous dominant trait [normal length legs (L)].
phenotype = 100% normal; genotype = 100% Ll
l = allele for stubby legs; L = allele for normal length. If the type of inheritance is complete dominance, when you cross two heterozygotes, the progeny will be
phenotype = 3 normal : 1 stubby; genotype = 1 LL : 2 Ll : 1ll
If you were asked to run some lab tests, but did not know what to expect for the unknown sample, what would you do? Choose the best answer.
set up a positive and a negative controls at the same time you set up the test for the sample investigated
A positive control to test for blood types is
the blood/antibody combination that you know WILL agglutinate
Which of these options describes a phenotype?
type AB