Benzo(a)pyrene, found in cigarette smoke as well as in coal tar, undergoes metabolic activation by cytochrome P-450 in the lungs to form a potent mutagen.

TLS Online TPP Program

#Id: 2175

#Unit 11. Evolution and Behavior

Selection coefficients-  The allelic frequency at equilibrium (qˆ) depends on the relative fitnesses of the two homozygotes:

TLS Online TPP Program

#Id: 4736

#Unit 5. Developmental Biology

The zygote of C. elegans exhibits rotational holoblastic cleavage.

TLS Online TPP Program

#Id: 10349

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 2902

#Unit 13. Methods in Biology

The sedimentation rate of a given particle will be zero when the density of the

particle and the surrounding medium are equal.

TLS Online TPP Program

#Id: 6274

#Unit 8. Inheritance Biology

Dominant recessive epistasis (13:3) Pigmentation in paddy rice

P  = purple

              pp=green

              I   =inhibitory gene

              PpIi × PpIi

                       

              P_I_=9  green

              P_ii = 3 purple

              ppI_=3  green

              ppii =1  green