5.Molecular Basis of Inheritance
medium

મોટાથી નાના ક્રમમાં જનીન દ્રવ્યની ગોઠવણીનો ક્રમ ઓળખો.

A

જીનોમ -રંગસૂત્ર -જનીન -ન્યુક્લિઓટાઈડ

B

રંગસૂત્ર -જનીન -જીનોમ -ન્યુક્લિઓટાઈડ

C

જીનોમ -રંગસૂત્ર -ન્યુક્લિઓટાઈડ -જનીન

D

રંગસૂત્ર -જીનોમ -ન્યુક્લિઓટાઇડ -જનીન

(NEET-2015)

Solution

(a) : In genome all the genes are contained in a single set of chromosomes. The instructions in our genome are present in the form of $DNA$. $DNA$ has a complicated structure in the form of a double helix. Single strands of $DNA$ are coiled up into structures called chromosomes. Within the chromosomes, segments of $DNA$ are “read” together to form genes. Thus, a gene is a segment of $DNA$ or chromosome situated at a specific locus (gene locus) which carries coded information associated with a specific function and can undergo crossing over as well as mutation. A nucleotide is the basic unit of $DNA$ made up of a pentose sugar, phosphoric acid and a nitrogenous base.

Standard 12
Biology

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