Chromosomes

Color blindness is typically linked to the X chromosome. The most common form, red-green color blindness, usually affects males more than females because they have only one X chromosome. If a male inherits a faulty gene for color vision on his X chromosome, he will likely experience color blindness.

They get Klinefelter syndrome. They have male sex organs, but the testes are abnormally small and the man is sterile. Even though the extra X is inactivated, some breast enlargement and other female body characteristics are common.

Each parent contributes 23 to each offspring. 23+23=46.

It is during the anaphase of meiosis that the replicated homologous chromosomes line up next to each other at the cell's equator.

After DNA replication, there are double the number of chromosomes, which will be divided into two identical daughter nuclei during mitosis. For example, a normal human body cell has 46 chromosomes. When it undergoes DNA replication, the chromosomes are doubled so that there will be 92 chromosomes, consisting of 46 pairs of sister chromatids. During mitosis, the sister chromatids separate into two identical daughter nuclei, each having 46 chromosomes.

The prophase phase is when DNA winds up into chromosomes. It winds up to remain organized. Cytokinesis is when the DNA unwinds again.

Because every cell in the human body contains the formula for our chromosomes. If the chromosomes don't reproduce, then new duplicate cells cannot be formed.

The term is monosomy, in which one chromosome of a pair is missing. Turner's Syndrome is an example of monosomy, in which there is only one sex chromosome, which is the X chromosome. Humans with Turner's Syndrome are female, but sterile. The genotype of the sex chromosomes in Turner's Syndrome is XO, in which O represents a missing chromosome.

The Y chromosome is found in males only. Females have XX chromosomes whereas males have XY chromosomes. That is why they are different, because an XY cannot be female and an XX cannot be male.

It doesn't.

It's all about what's inside those chromosomes (DNA). Potatoes have 48 chromosomes, humans have 46 and fruit flies have 8.

they are lethal and cause spontaneous abortion of the embryo early in development.

If a cat has 19 pairs of chromosomes, each gamete will have 19 single (not pairs) of chromosomes.

Chromosome is a condensed form of the DNA, not an organism. Therefore, it doesn't fit into either of the categories because it is not an organism to begin with. However, a chromosome is only found in a eukaryote because the formation and the split of a chromosome is part of mitosis, a division of the nucleus.

The female can only pass on ONE "X". an XX female offspring must get the second X from the father.

Usually humans have 46 chromosomes, divided into 23 pairs within each cell, one copied from each parent.

Chromosome 21 is the smallest and the second human chromosome to be sequenced.

Many genetic conditions are related to changes in particular genes on this chromosome

including Cancers, Downs Syndrome and Alzheimer's Disease

Changes in the structure in the number of copies of a chromosome may also cause problems with health and development.

Cancer For example -translocation in chromosomes 12 and 21 have been linked to Lymphoblastic Leukemia whilst links between translocation of 8 and 21 Acute Myeloid leukemia.

Downs Syndrome -a chromosomal condition that, in most cases is caused by trisomy 21 (each cell has 3 copies instead of the normal 2).

cheetahs have 38 chromosomes in there body just like other cat like animals like the feared lion, and a savage tiger. happy now!

Chromatin is intertwinted mass of fine thread-like structure made of DNA and protein. During cell division (mitosis and meiosis), chromatin condenses to form thicker rod-like structures called chromosomes. Each chromosome consists of two similar halves called chromatids. Formation of chromosomes having two similar halves or chromatids is meant for equitable distribution of chromatin which is hereditary material.

your mother

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there are no chromosomes???????? mitosis needs them first....?

synapsis

what do you mean by types???? Chromosomes are the organized form of DNA found in cells. Chromosomes contain one very long, continuous piece of DNA, which contains many genes, regulatory elements and other intervening nucleotide sequences. A broader definition of "chromosome" also includes the DNA-bound proteins which serve to package and manage the DNA. The word chromosome comes from the Greek χρῶμα (chroma, color) and σῶμα (soma, body) due to their property of being stained very strongly with vital and supravital dyes. Chromosomes vary extensively between different organisms. The DNA molecule may be circular or linear, and can contain anything from tens of kilobase pairs to hundreds of megabase pairs. Typically eukaryotic cells (cells with nuclei) have large linear chromosomes and prokaryotic cells (cells without nuclei) smaller circular chromosomes, although there are many exceptions to this rule. Furthermore, cells may contain more than one type of chromosome; for example mitochondria in most eukaryotes and chloroplasts in plants have their own small chromosome in addition to the nuclear chromosomes. In eukaryotes nuclear chromosomes are packaged by proteins into a condensed structure called chromatin. This allows the massively-long DNA molecules to fit into the cell nucleus. The structure of chromatin varies through the cell cycle, and is responsible for the organisation of chromosomes into the classic four-arm structure during mitosis and meiosis. "Chromosome" is a rather loosely defined term. In prokaryotes, a small circular DNA molecule may be called either a plasmid or a small chromosome. These small circular genomes are also found in mitochondria, and chloroplasts, reflecting their bacterial origins. The simplest chromosomes are found in viruses: these DNA or RNA molecules are short linear or circular chromosomes that often lack any structural proteins.

only men have them