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TLS Online TPP Program

#Question id: 23101

Choose the incorrect statement 

#Unit 2. Cellular Organization
  1. The nucleosome is 200 bp of DNA, organized by an octamer of small, basic histone proteins into a beadlike structure. 
  2. The nucleosome is of 20nm/200A diameter, compacting the DNA about 13-fold over the length of naked DNA. Its first level of organization
  3. The second level of organization is the coiling of the 10-nm fiber of nucleosomes into a helical array to constitute the fiber of diameter 30 nm.
  4. 30 nm compacts the DNA 40-fold. This structure of this fiber requires the histone tails and is stabilized by linker histones
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TLS Online TPP Program

#Question id: 15409

#Unit 8. Inheritance Biology

 A heterozygous trihybrid corn plant is testcrossed and the following progeny are produced (all traits are recessive to their wildtype alternative);
          booster                              6
          booster, silkless                  137       
          booster, liguleless, silkless      291
          liguleless                          142
          liguleless, silkless                  3
          silkless                            30
          booster, liguleless                  34
          wildtype                            339
What is the order of the loci on the chromosome? 
TLS Online TPP Program

#Question id: 15410

#Unit 8. Inheritance Biology

A pattern of transmission where all offspring have the same phenotype as their mother is consistent with which type of non-Mendelian inheritance?
TLS Online TPP Program

#Question id: 15411

#Unit 8. Inheritance Biology

Both X-linked genes and extranuclear inheritance produce different results in reciprocal crosses. How can you distinguish between them?
TLS Online TPP Program

#Question id: 15412

#Unit 8. Inheritance Biology

For a trait known to be caused by a mitochondrial gene variant, there may be an occasional female that can transmit different phenotypes to her progeny on an apparently random basis. What situation might you suspect?
TLS Online TPP Program

#Question id: 15542

#Unit 8. Inheritance Biology

How would you expect a mutation in a gene encoding a tail fiber protein would affect the plaque phenotype of T4?
TLS Online TPP Program

#Question id: 15543

#Unit 8. Inheritance Biology

In Benzer's intragenic mapping experiments, what event was required to allow production of infectious phage from rII mutants?