Double-stranded dna molecule is being transcribed, only part of which is shown below. if the molecule is translated from left to right, one of the nucleotides shown in bold would be the first transcribed in this small molecule. 5'-atgatcggatcgatccat-3' 3'-tactagcctagctaggta-5' which of the following is the correct mrna produced from the transcription of this dna molecule?

a. -3'-uacuagccuagcuaggua-5'

b. -5'-uacuagccuagcuaggua-3'

c. -3'-augaucggaucgauccau-5'

d. -5'-augaucggaucgauccau-3'

d. -5'-AUGAUCGGAUCGAUCCAU-3'

Explanation:

Transcription is the first step of gene expression. It is a process in which mRNA is produced from the DNA which acts as a template. Enzyme involved in transcription is RNA polymerase. Only one strand of DNA is used as a template and it is the one with 3'-5' direction. So, this means that the synthesized mRNA has the 5'-3' direction. This is because RNA polymerase has the ability to add nucleotides only to 3' end.

Transcription is a highly regulated process, performed in the nucleus of the cell (in eukaryotes).

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.

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