Complete Fig. 1.2 by drawing a diagram to show the formation of a peptide bond between two molecules of glycine.
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tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.

you know they are heterozygous for a trait because they have it as jj or jj.

a compound light microscope is used to magnify objects in steps.  

hope it