TLS Online TPP Program

#Question id: 5564


At the moment of sperm penetration, human eggs ________.

#Unit 5. Developmental Biology
  1. have used flagellar propulsion to move from the ovary to the oviduct

  2. are still located within the ovary

  3. have a paper-thin cell of calcium carbonate that prevents desiccation

  4. are still surrounded by follicular cells

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TLS Online TPP Program

#Question id: 18962

#Unit 13. Methods in Biology

1. Presence of oncogenes (iaaM, iaaH and ipt) in T-DNA,

2. Their large size makes the handling procedures during cloning tedious and cumbersome

3. A general lack of unique cloning sites within the T-DNA, which are needed for the insertion of DNA segments to be cloned.

These three problems have been resolved by deleting 

TLS Online TPP Program

#Question id: 18963

#Unit 13. Methods in Biology

The use of wild type pTi as a vector presents the following three problems.
1. Presence of oncogenes (iaaM, iaaH and ipt) in T-DNA, which causes a disorganised growth and a loss of regeneration potentiaLof the cells having T-DNA in their genomes.
2. Their large size makes the handling procedures during cloning tedious and cumbersome.
3. A general lack of unique cloning sites within the T-DNA, which are needed for the insertion of DNA segments to be cloned
In the above mention’s problems, 1 and 3 can removed by disarming and creating MCS, to overcome from 2nd problem need to develop

TLS Online TPP Program

#Question id: 18964

#Unit 13. Methods in Biology

Size of agrobacterium can be reduced by binary vector formation; these binary vectors can be formed by phenomenon of

TLS Online TPP Program

#Question id: 18969

#Unit 8. Inheritance Biology

Consider the ABO “blood type” gene. This single gene has three alleles called A, B, and O. There are four resultant “blood types” (phenotypic classes), as follows:C
                               
Assume Hardy-Weinberg equilibrium. In Norway, the frequencies of the A and B alleles are 0.26 and 0.07, respectively. What is the frequencies of these six genotypes (AA, AO, BB, BO, AB, and OO);

TLS Online TPP Program

#Question id: 18970

#Unit 8. Inheritance Biology

Consider the ABO “blood type” gene. This single gene has three alleles called A, B, and O. There are four resultant “blood types” (phenotypic classes), as follows:
                                     
Assume Hardy-Weinberg equilibrium,  the frequencies of the A and B alleles are 0.26 and 0.07, respectively. What is the frequencies of the four blood types such as A, B, AB  and O in Norway;

TLS Online TPP Program

#Question id: 18971

#Unit 9. Diversity of Life Forms

The following are all true about the life cycle of mosses except