TLS Online TPP Program

#Question id: 33910


What is the Lk of a 5,000 bp circular duplex DNA molecule after eight enzymatic turnovers by a single molecule of DNA gyrase in the presence of ATP?

#Unit 2. Cellular Organization
  1. 500
  2. 460
  3. 476
  4. 480
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TLS Online TPP Program

#Question id: 19106

#Unit 8. Inheritance Biology

Assume that mating is random. First, consider an autosomal recessive disease that is usually lethal in childhood, and that has an incidence among newborns of 1/3000. What mutation rate would be required to maintain this frequency in the population? 

TLS Online TPP Program

#Question id: 26790

#Unit 8. Inheritance Biology

 Assuming that the A, B, C and D genes are not linked, the probability of a progeny being AaBBccDd from a cross between AABbccDd and aaBBccDD parents will be 

TLS Online TPP Program

#Question id: 26791

#Unit 8. Inheritance Biology

There are four genes which control the phenotype and assort independently such as A, B, C and D. If the genotype Aa Bb Cc Dd is selfed then what is the probability for progeny which shows the dominant phenotype for AT LEAST ONE of  phenotypes controlled by

genes A, B,  C and D? 

TLS Online TPP Program

#Question id: 26792

#Unit 8. Inheritance Biology

If an F1 plant (Rr) is backcrossed to the parent with round seeds and wrinkled seed, what proportion of the progeny will have wrinkled seeds from both?

TLS Online TPP Program

#Question id: 26793

#Unit 8. Inheritance Biology

The probability of rolling one die and obtaining a four. To calculate the probability of rolling a die twice and obtaining 2 fours, What is the probability of rolling a four on both is?

TLS Online TPP Program

#Question id: 26794

#Unit 8. Inheritance Biology

Genes are located close together on the same chromosome are called__