TLS Online TPP Program

#Question id: 8916


What do animals as diverse as corals and monkeys have in common?

#XL - T Zoology
  1. body cavity between body wall and digestive system
  2. number of embryonic tissue layers
  3. type of body symmetry
  4. presence of Hox genes
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TLS Online TPP Program

#Question id: 5758

#XL - R Botany

Consider a species with a diploid (2n) number of 28 chromosomes. How many chromosomes would be found in a monoploid body cell?

TLS Online TPP Program

#Question id: 5760

#XL - S Microbiology

The fluctuation test of Luria and Delbruck (studying resistance to bacteriophge T1 infection) established that

TLS Online TPP Program

#Question id: 5760

#XL - R Botany

The fluctuation test of Luria and Delbruck (studying resistance to bacteriophge T1 infection) established that

TLS Online TPP Program

#Question id: 5761

#XL - S Microbiology

E. coli cells were spread on an agar plate, producing 1000 colonies.  The colonies are replica plated on two agar plates containing the antibiotic kanamycin and one agar plate without antibiotics.  All of the colonies are able to grow on the agar plate without antibiotic but only 4 colonies are able to grow on each of the agar plates containing kanamycin.  You notice that the four colonies that grew on each of the kanamycin containing plates are in the exact same position.  This demonstrates

TLS Online TPP Program

#Question id: 5762

#XL - S Microbiology

An individual cell homozygous for a mutant allele of the gene for a human enzyme contains no detectable activity for that enzyme. The mutation is best described as

TLS Online TPP Program

#Question id: 5762

#XL - R Botany

An individual cell homozygous for a mutant allele of the gene for a human enzyme contains no detectable activity for that enzyme. The mutation is best described as