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TLS Online TPP Program

#Question id: 2514

In what way are intermediate filaments similar to both microtubules and microfilaments?

#Unit 2. Cellular Organization

  1. IFs are a chemically heterogeneous group of structures.

  2. IFs assemble and disassemble under changing cellular conditions.

  3. IFs have been identified in animal cells but not in other eukaryotes.

  4. IFs assemble into structures of varying thickness via several different pathways

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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?