#Question id: 6565
#General Aptitude
Find the wrong number in the series : 93, 309, 434, 498, 521, 533
#Question id: 7280
#Unit 5. Developmental Biology
In
drosophila, Physical forces drive invagination of the ventral furrow. Following
statements regarding to this process:
A. The cellularized blastoderm will begin
to activate higher levels of myosin in the cells at the ventral midline and
preferentially at their apical surface.
B. Epithelial adhesions paired with
differential activation of dynein and tissue geometry create mechanical
constraints that affect the orientation of actomyosin meshworks.
C. The A/P oriented arrays of myosin in the
cells at the ventral midline generate tension along the anterior-posterior
axis.
D. The combination of tissue geometry and
tension of these anterior-to-posterior meshworks cause the tissue to fold
outward at a right angle to the anterior-posterior axis, creating a long and
narrow ventral furrow.
Which of the following statements are incorrect?
#Question id: 31255
#Unit 5. Developmental Biology
#Question id: 12976
#Unit 10. Ecological Principles
#Question id: 15815
#Unit 8. Inheritance Biology
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 are dominant?