BIOL 1020 Lecture Notes - Lecture 14: Mendelian Inheritance, Zygosity, Antibody

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pinkcheetah941

15 Mar 2016

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Homologous chromosomes have the same genes on them but can be present in diferent alleles. Incomplete dominance: a heterozygote expresses an intermediate, blended phenotype. Codominance: a heterozygote"s phenotype is a combinaion of two fully expressed traits. Ex: roan is a patchy red and white. Type a has sugar a on the surface of red blood cells. Type b has sugar b on the surface of red blood cells. Type ab has sugar a and sugar b on the surface of red blood cells. Type o has no sugars on the surface of red blood cells. Your bodies produce anibodies that tag foreign proteins for destrucion. Females can be carriers of x-linked recessive traits. Hemophilia (xh), red-green colour blindness (xrg), duchenne muscular dystrophy (xd) Some individuals have more repeats of a certain sequence than others. Dna polymerase replicates secion of dna many in the lab. Dna from an individual with more repeats gives larger fragments.

Related Questions

1-The ABO blood typing system is based on ..

a- Genetic testing of blood samples

b- Cell-surface proteins found on red blood cells.

c- The count of certain cells found within a blood sample.

d- Unique white blood cells found in patients withinfections.

e- A conference of the Allied Blood Organization in 1958.

2- If a patient who has lost a lot of blood is not given atransfusion of typing blood that is "matched" or compatible, butrather an incompatible transfusion, this result in ...

a- Collapse of the veins due to low blood volume and low bloodpressure.

b- Leakage of the blood out of the vascular system and into thetissues.

c- Too much oxygen in the blood, injuring the brain.

d- Immune-mediated lysis of the RBCs, breaking open the cellsand releasing toxins into the blood.

e- A life-threatening condition known as toxemia that can betreated with injection of antibiotics.

3- A person with Type B blood will have________ antibodies inthier blood?

a- Anti-A.

b- Anti-B.

c- Anti-AB

d- Anto-O

e- Anti-ABO

4- Some patients are known as universal acceptors have bloodtype..

a- A.

b- B.

c- AB.

d- O

e- Rh

5- Someone who has Type O blood is known as a universal donorbecause

a- Their red blood cells (RBC) cannot be damaged.

b- Their RBC only have the A antigen, but not the B antigen.

c- Their RBC have both the A and B antigen.

d- Their RBC have neither A nor B antigens on their surface.

e- Their RBC have the O antigen on their surface.

ambermarten30

With respect to genetics, ABO blood types are controlled by asingle gene designated I, which has three alleles. The I A allelegives blood type A, I B gives blood type B, and i gives blood typeO. The I A and I B alleles are codominant and i allele is recessiveto both the I A and I B alleles.

Aside from the I alleles, there are two other genes that whenmutated affect ABO blood type inheritance. The first mutant isrecessive to wild type and is designated x. A homozygous xxindividual is phenotypically O for blood type no matter what thegenotype is of the I gene. For example, I A /I A x/x or I B /I Bx/x individuals are O type. The second mutant, is dominant to thewild type Y allele and is designated Yd . An individual carrying aYd allele is phenotypically blood type O no matter what thegenotype is of the I gene. For example, an I A /I A Y/Yd or I B /IB Y/Yd individuals is O.

a. Propose a biochemical model that explains the O phenotype ofthe recessive homozygous xx individual? Your model should explainthe biochemical function of the X gene in a wild type individualand should explain why the x mutation is recessive

maroonlocust976

BIOL 1020 Lecture Notes - Lecture 14: Mendelian Inheritance, Zygosity, Antibody

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