You and your lab partner have isolated 20 new mutant yeast strains that are defective in synthesis of threonine, an amino acid. These Thr- mutants do not grow on minimal medium, but they do grow on minimal medium supplemented with threonine. Ten of your Thr- mutants (numbered 1 through 10) were isolated in a strain of mating type a (MAT a). The other 10 Thrmutants (numbered 11 through 20) were isolated in a strain of mating type α (MAT α). You and your lab partner cross each of the MAT a strains to each of the MAT α strains, and you include crosses to the appropriate wild-type strains. Your experimental observations are shown in the table below, where (-) indicates diploids that did not grow on minimal medium and (+) indicates diploids that did grow on minimal medium.

Which mutations do you know to be in the same gene?

#Question id: 876

#Unit 1. Molecules and their Interaction Relevant to Biology

Prion protein is a normal constituent of brain tissue in all mammals which of the following statements are correct regarding prion protein

a) Strains of mice lacking the gene for PrP suffer no obvious ill effect

b) Illness occurs only when the normal cellular PRP or prpc occurs in an altered confirmation called PrPsc

c) The interaction of prpsc with the prpc converts the letter to prpsc initiating a Domino effect in which more and more the brain proteins converted to the disease causing form

d) the structure of prpsc is very different with much of the structure converted to amyloid like Alpha sheet.

#Question id: 11623

#Unit 8. Inheritance Biology

Insulin like growth factor in mice, where IgF+ represents tall, IgF- represent dwarf phenotype, if cross between male tall (IgF+/IgF+) with female dwarf (IgF-/IgF-) resulting progeny will shows tall phenotype , while reciprocate this cross resulting progeny  shows dwarf phenotype. If resulting these F1 progeny cross each other then what will be the ratio in F2  generation?

#Question id: 11953

#Unit 7. System Physiology – Animal

Which of the following is a difference between vitamins and minerals?

#Question id: 3432

#Unit 11. Evolution and Behavior

Which of the following statements is (are) true of fixed action patterns?

#Question id: 11130

#Unit 7. System Physiology – Animal

Which of the following electrical events is characteristic of inhibitory synaptic interactions?