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Chromosomes

Chromosomes contain the genetic material DNA

1,309 Questions

What is nucleolus chromosomes?

The nucleolus is a substructure within the cell nucleus that plays a key role in ribosome production. It is not the same as chromosomes, which are long strands of DNA that contain genetic information. Chromosomes are found within the cell nucleus, where they can interact with the nucleolus during protein synthesis.

How do chromosomes separate?

Chromosomes separate during cell division through a process called mitosis or meiosis. In mitosis, the duplicated chromosomes align at the center of the cell and are then pulled apart by the spindle fibers, ensuring each daughter cell receives a complete set of chromosomes. In meiosis, the process is more complex, involving two rounds of divisions to produce gametes with half the number of chromosomes.

How many chromosomes are in a genome?

23 i think

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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.

How many chromosomes does algae have?

algae, can have as many as 140 chromosomes

When chromosomes are visible?

Chromosomes are visible during prophase. Chromosomes are only visible in cells during the cell division because the DNA and protein that the chromosomes are made of are spread throughout the nucleus.

Where is a genes location along a chromosome?

A gene's location along a chromosome is determined by its specific position, known as a locus. The locus is described by the distance measured in base pairs from a reference point. Genes closer together on a chromosome are more likely to be inherited together, a phenomenon known as genetic linkage.

How did chromosomes evolve?

Good question!

One possible answer lies in some of the benefits that chromosomes have as opposed to genetic sequences that just float around separately. Linked sequences of genes would have had a higher copying fidelity, and there would be a greater certainty that the daughter cell receives, upon cell division, a complete complement of genes necessary for survival. So a tendency for genes (distinct genetic sequences) to link together and form complexes would, under the right circumstances, be favoured. The same pressures may subsequently have lead to the development of telomeric sequences and the distinctive chromatid form.

On what chromosome is tourette syndrome located on?

They don't know yet, Recent research suggests that a small number of Tourette syndrome cases may be caused by a defect on chromosome 13 of gene SLITRK1. and some other chromosomes like 7. There now busy with a study to find the genes that may cause tourette syndrome, results will be given by 2018

What do chromosome contain?

Chromosomes contain DNA, which carries the genetic information that determines an organism's traits and characteristics. They also contain proteins that help in regulating gene expression and packaging the DNA into a compact structure.

Where are your chromosomes?

Chromosomes are located inside the nucleus of each cell in our body. They contain our genetic material, organized into genes that provide instructions for our body's development, function, and growth. Humans typically have 23 pairs of chromosomes, totaling 46 in each cell.

Chromosomes are replicated by?

Chromosomes are replicated during the S phase of the cell cycle through a process called DNA replication. This process involves unwinding the DNA strands, synthesizing new complementary strands, and proofreading for accuracy. The result is two identical copies of each chromosome, known as sister chromatids.

Briefly state what chromosomes contain and what they determine in organisms?

Chromosomes contain genetic material, specifically DNA, that carries the instructions for building and maintaining an organism. They determine traits such as physical characteristics, behavior, and susceptibility to diseases.

What is telocentric chromosome?

A telocentric chromosome is a type of chromosome with the centromere located at one end, resulting in a single chromosomal arm. This structure is commonly found in certain species and can affect the genetic behavior during cell division and meiosis.

What is chromosome comparison?

Chromosome comparison is where the DNA of one species is compared to another. For instance, Scientists compare the remains of prehistoric animals to current organisms roaming the Earth in our modern day world.

How many chromosomes in a spermatid?

A spermatid contains 23 chromosomes, which are the result of meiosis dividing the original diploid germ cell's 46 chromosomes in half. This reduction in chromosome number ensures that when the spermatid fuses with an egg during fertilization, the resulting zygote will have the correct number of chromosomes.

What chromosome is autism on?

Yes. There is a link, but this does not mean it causes autism. However, there are some aspects of chromosome 1 that make it of interest in autism research. They do not describe it as causing autism, but instead as an autism susceptibility gene.

Links to articles, abstracts, or reviews are in the "Related Links" section below.

Does a zygote have a haploid number of chromosomes?

A zygote is a fertilized egg, so half of the number came from the sperm (a haploid number or n) and half came from the egg (also a haploid number or n) so the zygote has a diploid chromosome number (2n).

What characteristics do chromosomes and genes share?

The cell's nuclear genome is contained within the genes that are located inside of the chromosomes. Chromosomes are thread like structures and are located inside of the nucleus in animal and plant cells.

Why is chromosomes useful?

Chromosomes play a crucial role in carrying genetic information from one generation to the next. They contain the DNA, which encodes an individual's unique traits and characteristics. Chromosomes also aid in cell division and ensure the accurate distribution of genetic material to daughter cells during reproduction.

Cellular structure to which the chromosomes attach?

Centromere. It is a region on a chromosome where the kinetochore forms, allowing for attachment to spindle fibers during cell division, ensuring proper segregation of chromosomes.

What are chromosomes and when can they be seen?

Chromosomes are thread-like structures made of DNA and proteins found in the nucleus of a cell. They carry genetic information and are visible during cell division, specifically during metaphase when they condense and line up in the center of the cell.

What is the definition of the word chromosome in Greek?

The word "chromosome" comes from the Greek words "chroma", meaning color, and "soma", meaning body, referring to the colored bodies seen in cells during cell division when chromosomes are most condensed and visible.

What chromosome is Spina Bifida located on?

Spina Bifida is not located on a specific chromosome. It is a neural tube defect that can be influenced by both genetic and environmental factors. There is no single gene or chromosomal location identified as causing Spina Bifida.

What does Chromosomes do with Genetics?

Chromosomes are the name given to the discrete pieces of DNA in a cell that are copied as a unit before a cell divides. All genes are encoded in DNA so the chromosomes are the volumes in the library of an organism that is called its genome. The genome always fits into a single cell.

In bacteria a chromosome can consists of a single simple loop of DNA. In plant and animal cells the chromosomes are much longer pieces of DNA that are packaged up by being wound around special proteins called histones. Another thing is that in most cells chromosomes occur in pairs. That is because you got one from your mother and one from your father. There is a lot more to say about chromosomes but their basic function is to store the DNA in a way that its genes can be accessed or read and all of the genes copied when a cell divides