The Highly Compacted Regions of Chromosomes Are Called

E when fully extended are as long as the bacterial cell. Heterochromatin __________are a group of proteins that DNA wraps around to compact itself and to form nucleosomes.

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The DNA-histone complex is called chromatin.

. _____ synthesis begins at a site within a chromosome called the origin of replication. Chromosomes are replicated and passed along from parent to offspring Ð3. Although this compaction makes it easier to transport DNA within a dividing cell it also makes DNA less.

Humans have 23 pairs for a total number of 46 chromosomes. The term _____ is used to describe the highly compacted regions of eukaryotic chromosomes. Diploid organisms contain a pair of each chromosome.

Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits called nucleosomes. Highly compacted regions of a chromosome where transcription does not occur is called _____ whereas less compacted regions where transcription can easily occur is called _____. DNA can be highly compacted.

How is DNA packaged to fit in cell. The chromosome theory of inheritance is based on a few fundamental principles Ð1. What is meant by a karyotype.

The term _____ is used to describe the less condensed regions of eukaryotic chromosomes. Bands are separated from each other by interchromomeric fragments of chromosomes interbands. In every polytene chromosome homologous chromomeres align exactly alongside each other and so they fuse to form a transverse band.

A region of a chromosome with highly compacted chromatin is called ______. They are made up of short 5-7 base pair units called tandem repeats that repeat over and over again to form tandem arrays a. An adenine in one strand of DNA forms _____ hydrogen bonds with a thymine.

The DNA surrouding the histone core is called a nucleosome. Chromatin makes up eukaryotic chromosomes and is a complex of. DNA in eukaryotes is highly structured and organized in all stages of an organisms life.

Both the centromeres and telomeres are heterochromatic regions densely compacted regions that do not undergo DNA transcription 7 Jack Blitz 1. The chromosomes which remain uncondensed during interphase are called euchromosomes. A are highly compacted into structures called nucleoids.

The way in which eukaryotes. The highly condensed chromosomes in a dividing cell are known as mitotic chromosomes. The second level of compaction occurs as the nucleosomes and the linker DNA between them are coiled into a 30-nm chromatin fiber which shortens the chromosome so its about 50 times shorter than the extended form.

It is a complex of DNA histones and non-histone proteins found within the nucleus of a cell. The material of chromosomes. One form called euchromatin is less condensed and can be transcribed.

These regions are referred to as - ScieMce. D contain large numbers of nucleosomes. Chromosomes which remain condensed during interphase are called heterochromosomes as for example the sex chromosomes of insects.

If stretched to its full length the DNA molecule of the largest human chromosome would be 85mm. Pairs of chromosomes also known as homologous chromosomes contain the same genes though there may be. These copies along with associated proteins lie side by side and are termed sister chromatids When a cell prepares to divide they become highly compacted at a region called the centromere.

The highly compacted regions of chromosomes are referred to as _____. The less condensed regions of chromosomes are referred to as. Chromatin exists in two forms.

The term _____is used to describe the highly compacted regions of eukaryotic chromosomes. Chromosomes contain the genetic material Ð2. Some regions of chromosomes remain highly condensed tightly coiled and untranscribed throughout the cell cycle.

Heteropycnesis may be positive where there is over-condensation or may be negative where there is under- condensation. Yet during mitosis and meiosis this DNA molecule is compacted into a chromosome approximately 5µm long. The entire complement of genetic material in an organism is known as the ___.

The term also refers to a laboratory technique that produces an. This is the form in which chromosomes are most easily visualized. The second form called heterochromatin is highly condensed and is typically not transcribed.

Regions with high DNA content are known as chromomeres. Karyotype A karyotype is an individuals collection of chromosomes. The nuclei of most eukaryotic cells contain chromosomes that are found in homologous pairs During meiosis each homologue segregates into one.

Identify the important processes facilitated by chromosomal sequences in their roles at the molecular level. Some regions of chromosomes remain highly condensed tightly coiled and untranscribed throughout the cell cycle. In fact all the images of chromosomes shown so far in the chapter are of chromosomes in mitosis.

Highly compacted chromatin which is found not only in metaphase chromosomes but also in varying regions of interphase chromosomes is generally not expressed at all. These regions are referred to as. B are seen in electron microscopy as beads on a string C are surrounded by a nuclear membrane.

The DNA sequence which signals the beginning of transcription is the _____.

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