TLS Online TPP Program

#Question id: 14407


Most gram-negative bacteria are not as susceptible to penicillin as gram-positive bacteria are because

#Section 2: General Biology
  1. They have fewer peptide cross-bridges
  2. They have more peptide cross-bridges
  3. They have thick peptidoglycan layer
  4. They have teichoic acid present
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TLS Online TPP Program

#Question id: 3256

#Section 3: Genetics, Cellular and Molecular Biology

There are three alleles, A1, A2, and A3, whose frequencies are equal abundance. According the Hardy-Weinberg equilibrium

TLS Online TPP Program

#Question id: 3257

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements about evolution is NOT true?

TLS Online TPP Program

#Question id: 3258

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following incorrect about genetic drift

TLS Online TPP Program

#Question id: 3259

#Section 3: Genetics, Cellular and Molecular Biology

Different type of evolution leads to group of taxon in following three manners

A- group of taxon whose member have descended from common ancestor

B- when two lineages convergently  evolve similar character states form  groups that are recognized by pheneticists

c. taxon that include most recent ancestor but not all of its descendent

TLS Online TPP Program

#Question id: 3260

#Section 3: Genetics, Cellular and Molecular Biology

Consider a diploid population at Hardy-Weinberg equilibrium. For a locus with two alleles, the frequency of the A1A1 genotype is 0.04) The frequency of A2 allele is

TLS Online TPP Program

#Question id: 3261

#Section 3: Genetics, Cellular and Molecular Biology

A parent population (P) is change into daughter populations (Q) which grow in habitats. After 1000 generations, the equilibrium frequency distribution of of the daughter populations is shown in the figure below. For reference, the vertical line represents the mean of the parent population. Which type of natural selection?