TLS Online TPP Program

#Question id: 18730


Which of the following statements is correct with respect to T4 DNA ligase?

#Unit 13. Methods in Biology
  1. It can carry out only blunt ended ligations
  2. It doesn’t requires ATP
  3. It requires a phosphate group at 3’ end and a hydroxyl group at 5’ end for the molecule to be joined
  4. It is obtained from T4 bacteriophage upon infection by E. coli
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TLS Online TPP Program

#Question id: 4804

#Unit 8. Inheritance Biology

Formation of the following pattern in an ordered octad is due to what event during meiosis? Pattern: AAaaaaaAA

TLS Online TPP Program

#Question id: 4805

#Unit 8. Inheritance Biology

What is maximum parental frequency for two genes if single cross over within two strands?

TLS Online TPP Program

#Question id: 4806

#Unit 8. Inheritance Biology

Four incompletely link gene as cis configuration, Heterozygote ABCD/abcd produced a gamete with genotype AbCD is due to

TLS Online TPP Program

#Question id: 4807

#Unit 8. Inheritance Biology

Three incompletely link marker gene was found. There is a marker A gene present in middle. Cross between aaBBcc X AAbbCC to produce heterozygous were allowed test cross, which of the following test cross offspring should be least frequent?

TLS Online TPP Program

#Question id: 4808

#Unit 8. Inheritance Biology

When F1 female Drosophila of the genotype AaBbCc is test crossed, ( Gene A and B located at 10 map unit in transe configuration but gene C are independently assort for both gene. Which of the following test cross progeny that is that is more frequent?

TLS Online TPP Program

#Question id: 4809

#Unit 8. Inheritance Biology

The upper most following figure above shows the locations of four genes on the genetic map of an organism; the lower figure shows the locations of the same four genes on a physical map derived from the nucleotide sequence of the DNA of that organism. The maps are not identical because