How many polynucleotide chains are on a chromosome?

The three-dimensional structure of DNA—the double helix—arises from the chemical and structural features of its two polynucleotide chains.

How many polynucleotide chains are in a replicated chromosome at the start of mitosis?

In Interphase (prior to mitosis and meiosis) we start with 46 chromsomes (46 ‘sticks’); after chromosomal duplication we (still) end up with 46 chromosomes, each joined by a centromere. How many chromatids do we have at the end of Interphase?

How many polynucleotide chains are present in DNA?

two polynucleotide chains
DNA molecules have two polynucleotide chains, held together in a ladderlike structure. The sugar phosphate backbones of the two chains run parallel to each other in opposite directions.

How many strands of DNA are in sister chromatids?

two strands
Chromatids, a pair of identical chromosomes, contain two strands of DNA.

What is a polynucleotide chain?

a sequence of NUCLEOTIDES joined together. RNA generally consists of one polynucleotide chain, while DNA may consist of one chain (single-stranded DNA), or two chains bonded between the bases in a system of complementary pairing: adenine with thymine, guanine with cytosine (double-stranded DNA).

How many polynucleotide chains are found in RNA?

one polynucleotide chain
The nucleic acid RNA (ribonucleic acid) consists of just one polynucleotide chain.

Is a chromosome a polynucleotide?

Deoxyribonucleic acid (DNA) is the primary component of chromosomes and consists of two polynucleotide chains that coil around each other to form a double helix.

What is a single polynucleotide chain?

How many strands of DNA make up a single chromosome?

two
Most of humans’ DNA is typically packaged into 46 chromosomes located in the cell’s nucleus, which is a specialized compartment for storing DNA. Each of the chromosomes in the nucleus is made up of two linear DNA strands wrapped around each other.

How many DNA is present in a chromosome?

One chromosome is made of two chromatids and each chromatid is a DNA molecule. Each DNA molecule is a double helix. So two DNA molecules per chromosome.

What is DNA polynucleotide?

A polynucleotide is a combination of nucleotide monomers which are connected to each other through covalent bonds. A single polynucleotide molecule consists of 14 or more monomers of nucleotide in a chain structure. DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) are examples of polynucleotides.