TLS Online TPP Program

#Question id: 2917


With respect to the interconversion between open and condensed chromatin shown below: Which of the directions (i) or (ii) would you anticipate would be the consequence of the following types of chromatin modification?

#Unit 2. Cellular Organization
  1. Histone acetylation – (i) ; DNA methylation – (ii)

  2. Histone methylation – (i) or (ii) ;  Histone deacetylation – (i)

  3. DNA demethylation – (ii) ; Histone acetylation – (i)

  4. Histone deacetylation – (i) ; Histone methylation – (ii)

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TLS Online TPP Program

#Question id: 19108

#Unit 8. Inheritance Biology

Assume that mating is random. Colorblindness is an X-linked recessive trait that is found in about 5 percent of males. What fraction of females are heterozygous carriers of the colorblindness allele?

TLS Online TPP Program

#Question id: 19109

#Unit 8. Inheritance Biology

Assume that mating is random. Colorblindness is an X-linked recessive trait that is found in about 5 percent of males. What fraction of females are homozygous for the colorblindness allele?  

TLS Online TPP Program

#Question id: 19110

#Unit 8. Inheritance Biology

If the frequency of PKU among newborns is approximately 1/10,000 (when the parents are unrelated). What is the risk of a child with PKU if the parents are siblings?

TLS Online TPP Program

#Question id: 19111

#Unit 8. Inheritance Biology

If the frequency of PKU among newborns is approximately 1/10,000 (when the parents are unrelated). What is the risk of a child with PKU if the parents are uncle and niece?

TLS Online TPP Program

#Question id: 19112

#Unit 8. Inheritance Biology

the frequency of PKU among newborns is approximately 1/10,000 (when the parents are unrelated). What is the risk of a child with PKU if the parents are second cousins?

TLS Online TPP Program

#Question id: 19113

#Unit 8. Inheritance Biology

P, Q, and R are three different inbred, true-breeding strains of mice. A hybrid between P and Q is mated to R, and a hybrid between Q and R is mated to P. A male from the first mating is mated to a female from the second mating. What is the inbreeding coefficient of their progeny?