HIV neutralizing antibodies:

Individuals that are homozygous for the CCR5 mutation, the delta 32 deletion, are:

Which of the following is NOT true of M- tropic strains of HIV?

  CHOOSE ONLY ONE OF THESE QUESTIONS TO ANSWER. ONLY ONE. a.Why is HAART therapy prefered to monotherapy in HIV treatment? Explain what HAART is.   b. Explain why HIV cannot be cured? A handful of people have been cured, HOW?   c. Give three differences between HIV-1 and HIV-2. Where in the world did HIV-2 originate from?

What percentage of AB/ab (i.e., A__B a__b) offspring will be produced from a cross between Ab/aB and ab/ab if the genes are located 22 map units apart? (Hint: all offspring receive ab (i.e., a___b) from parent 2, so you need to determine what percentage of offspring receive AB (i.e., A___B) from parent 1).

If there is a non-disjunction of chromosome 11 in one of the cells undergoing meiosis II, what will be the genetic make-up of the resulting embryo following fertilization by a normal gamete?

The gene for nail patellar syndrome (n = normal allele; N  = mutant allele) shows linkage to the blood group A, B and O alleles (IA = blood type A; IB = blood type B; i = blood type O). The IA and IB alleles both show complete dominance over the i allele. The IA and IB alleles are co-dominant to each other. The two genes are located 16 m.u. apart. Beth has the genotype n____i   N____IA Simon has the genotype    N____i  n____IB What is the probability that they will have a normal child who is blood type B? 

The gene for nail patellar syndrome (n = normal allele; N  = mutant allele) shows linkage to the blood group A, B and O alleles (IA = blood type A; IB = blood type B; i = blood type O). The IA and IB alleles both show complete dominance over the i allele. The IA and IB alleles are co-dominant to each other. The two genes are located 16 m.u. apart. An individual has the following genotype: n____i   N____ IA What is the probability that the individual will pass on a recombinant chromosome to offspring (any recombinant chromosome)? 

Colorblindness and adrenoleukodystrophy (ALD) are both X linked recessive phenotypes (C = normal; c = colorblind and A = normal; a = adrenoleukodystrophy). The genes are 32 m.u. apart on the X chromosome.  Adult onset cerebral ALD begins in middle age and has a rapid onset to death. Cara’s dad is color blind and has just started showing signs of ALD. Assume there are no recessive alleles on Cara’s mother’s side of the family (i.e., assume Cara is c___a C___A). Cara’s 3-yr old son is red-green  colorblind. What is the probability that her son will develop ALD?    

Which statement describing DNA is incorrect?