In forensics, the laws in the United States and elsewhere allow the establishment of databases of PCR amplification of short tandem repeats (STRs) of the Y chromosome
Which of these statements would provide an appropriate basis for making such databases divided by ethnicity? A) Different heritage groups have different levels of such polymorphisms.
B) It would be easier to evaluate suspects of different ethnicities.
C) It would show detectives which ethnic category they should be looking for.
D) Most crimes of certain types are found among certain groups.
E) Y polymorphisms increase with the probability of criminal behavior.
A
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Hemophilia A is an X-linked recessive genetic condition. In humans it is due to a mutation in the F8 gene, which encodes a protein called coagulation factor VII. Coagulation factors are proteins important in blood clotting. Individuals with hemophilia, when injured, bleed longer than a normal, healthy individual; the inability to normally clot blood can be life threatening. Hemophilia is much more common in males than in females. Which of the following does NOT explain why this is so?
A. A female with one defective allele makes enough normal coagulation factor VII to clot blood and will not have hemophilia A B. Males are hemizygous for the F8 gene, so they will have hemophilia A if they have one defective allele C. Females have to receive a defective allele from both their mother and their father to get hemophilia A D. Males have to receive a defective allele only from their father to get hemophilia A
A protein that speeds up chemical reactions without being consumed in the process is called a(n) ________
Fill in the blank(s) with correct word
What kind of bond holds two water molecules to each other?
A) hydrogen bonds B) ionic bonds C) nonpolar covalent bonds D) polar covalent bonds
Typically as magnification increases, the field of view also increases.
a. true b. false