TLS Online TPP Program

#Question id: 11484


Two students studying physiology taste a known "bitter" substance, and both report sensing bitterness. They then sample another substance. Student A reports sensing both a bitter taste and a salty taste, but student B reports only a salty taste. What is the most logical explanation?

#Unit 7. System Physiology – Animal
  1. Student A had an allergic reaction to the food, causing him to perceive the food as being bitter.
  2. Student A has normal "bitter" taste buds; student B has defective "bitter" taste buds that result in lower sensitivity to bitterness.
  3. Student A has a protein receptor capable of detecting a bitter molecule found in that substance, whereas student B lacks that particular protein receptor.

  4. Student A has normal saliva, whereas student B's saliva is more alkaline than normal.
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TLS Online TPP Program

#Question id: 11629

#Unit 8. Inheritance Biology

Two pure line plants of 46 cm and 10 cm in height cross each other forming F1 progeny 28 cm in height,  what is the no. of QTL formed?

TLS Online TPP Program

#Question id: 11628

#Unit 8. Inheritance Biology

Two  varieties of maize averaging of 180 cm and  20cm, inches in height respectively, are crossed. The F1 progeny is quite uniform averaging  100cm in height. How many different  Phenotype express in f2 generation?


TLS Online TPP Program

#Question id: 5372

#Unit 8. Inheritance Biology

Consider the following diagrams, each being a different situation in which an entire gene is represented in a higher organism. In some cases, a point mutation exists (indicated by p). In other cases, a deletion has occurred (indicated by xxxxx), both of which render the gene nonfunctional

Which of the following homozygous cross would produce wild type phenotype?

TLS Online TPP Program

#Question id: 5371

#Unit 8. Inheritance Biology

The trait represented in the following pedigree (shaded symbols) is known to be inherited as a single dominant gene. Calculate the probability of the trait appearing in the offspring if the first cousins should marry and have children.

TLS Online TPP Program

#Question id: 5370

#Unit 8. Inheritance Biology

The pedigree below represents the inheritance of an X link recessive trait. The probability of effected child in fourth generation of family?

TLS Online TPP Program

#Question id: 5369

#Unit 8. Inheritance Biology

Above family shows inheritance of colour-blindness is recessive genetic disorder. Which of the following is correct statement? (All persons are outside of family either homozygous (female) or hemizygous (Male) are consider)