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TLS Online TPP Program

#Question id: 19374

Transgene expression can be exploited in several different ways such as
1. Protein product itself may be an important biomolecule 
2. Protein itself may generate a valuable phenotype in the plan
3. Product may trigger a pathway endogenous to the plant
Which of the above statements are correct?

#SCPH28 | Zoology
  1. 1 only 
  2. 1&2 only
  3. 1, 2&3 only   
  4. 2&3
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TLS Online TPP Program

#Question id: 13087

#SCPH28 | Zoology

To express a yeast gene in E. coli, your task is to design a strategy to insert the yeast gene into the bacterial plasmid. Below is a map of the area of the yeast genome surrounding the gene in which you are interested.

 
The distance between each tick mark placed on the line above is 100 bases in length
Below are the enzymes you can use, with their specific cut sites shown 5’-XXXXXX-3’ 3’-XXXXXX-5’

 
The plasmid is 5,000 bases long and the two farthest restriction enzyme sites are 200 bases apart. The plasmid has an ampicillin resistance gene somewhere on the plasmid distal from the restriction cut sites.

                              
Which of the following restriction enzyme is the best choice for you use to design a way to get the insert into the vector?
TLS Online TPP Program

#Question id: 4973

#SCPH28 | Zoology

Fossils of Lystrosaurus, a dicynodont therapsid, are most common in parts of modern-day South America, South Africa, Madagascar, India, South Australia, and Antarctica. It apparently lived in arid regions, and was mostly herbivorous. It originated during the mid-Permian period, survived the Permian extinction, and dwindled by the late Triassic, though there is evidence of a relict population in Australia during the Cretaceous. The dicynodonts had two large tusks, extending down from their upper jaws; the tusks were not used for food gathering, and in some species were limited to males. Food was gathered using an otherwise toothless beak. Judging from the fossil record, these pig-sized organisms were the most common mammal-like reptiles of the Permian.Which of Lystrosaurusʹ features help explain why these organisms fossilized so abundantly?

I. the presence of hard parts, such as tusks

II. its herbivorous diet

III. its persistence across at least two geological eras

IV. its widespread geographic distribution

V. its mixture of reptilian and mammalian features
TLS Online TPP Program

#Question id: 11988

#SCPH28 | Zoology

If mayflies lay eggs on roads instead of in water, this behavior could involve which of the following? 
TLS Online TPP Program

#Question id: 5346

#SCPH28 | Zoology

The following typical pedigree illustrates the key point that affected children are born to unaffected parents: Which of the following is correct statement?
TLS Online TPP Program

#Question id: 3551

#SCPH01 Biochemistry

In angiosperm plant, assume that the male parent has an AA Bb genotype, and that the female parent has an aa BB genotype. What is genotype in endosperm nucleus, after reproduction between these two plants?