When chromosomes are visible, they exist as replicated DNA, so each chromosome consists of two identical sister chromatids, which will be separated during mitosis to form two new identical daughter nuclei.
Yes in the cell of human the nucleus contains 23 pairs of chromosomes and each chromosome has one DNA molecule, hence there are 23 pairs of DNA.
Pyrimidines in DNA is about equal to the percentage of purines. This is established by Chargoff's rule and is confirmed by the fact that base pairing of anything but a pyrimidine with a purine would be too wide or too narrow to fit within the backbones of a DNA strand
Humans and dogs only share about 25% of the exact same DNA or genome sequence. They also have a different number of chromosomes. Humans have 23 pairs of chromosomes and dogs have 39 pairs.
Elephant DNA has a double helix structure like the DNA of humans. Elephants have 28 pairs of chromosomes whereas we humans have 23 pairs so we differ in this aspect.
Human Mitochondrial DNA has a mere 16,569 base pairs or approximately 37 genes. It has a circular structure not a chromosome.
No, humans have 23 pairs of chromosomes - so 46 chromosomes. Every cell (with one exception) has DNA, and consequently the chromosomes. Only red blood cells have no nuclei, and no DNA.
Chromosomes are made up of DNA and proteins. The chromosomes help to carry the genetic information throughout the body. There are 23 pairs of chromosomes in the human body.
chromosomes
The phase during mitosis in which DNA separates into pairs of chromosomes is called prophase. During prophase, the chromosomes condense and become visible as distinct structures before the actual separation occurs during later stages of mitosis.
23 Pairs of chromosomes or 46 chromosomes.
A zygote is a fertilized egg cell, so it is diploid and thus has a full set of DNA. If the adult has 30 pairs of chromosomes, the zygote would have 30 pairs. If there are 30 chromosomes, then the zygote will have 60 (30 from the mother and 30 from the father). It comes down to whether you meant individual chromosomes or pairs of chromosomes.
23 i think -- There's no such thing as "a DNA. But it works the other way around: DNA doesn't contain chromosomes, but chromosomes contain DNA. A person has 23 chromosome pairs: 46 chromosomes. One (pair) of which decides gender. Some people aren't perfect and have 47 chromosomes. Maybe other 'combinations' exist too.