Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 5934
TLS Online TPP Program

#Question id: 7134

What important lesson for the mechanisms of development can we derive from the ability to clone frogs by nuclear transfer?

#Unit 5. Developmental Biology
  1. that the selective gene expression seen in differentiated cells does not result from an irreversible loss of genes, or their potential for expression
  2. that a piece of a frog can be "planted" to obtain a new, cloned individual, just like in plants
  3. that the pattern of gene expression in a differentiated cell can only be reversed if the nucleus is removed from the cell
  4. that the mechanisms of development are irreversible in all organisms except frogs
More Questions
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: 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: 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: 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: 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: 11630

#Unit 8. Inheritance Biology

What is the F2 phenotypic ratio in 3 QTL?