Chromosomes
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Meiosis: Dividing Chromosomes to Form GametesIn order for an organism to develop gametes (cells such as sperm and eggs) to aid in sexual reproduction, a process known as meiosis must occur. Meiosis reduces the number of chromosomes found within the cell from 46 to 23 in humans.
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Telomeres and Aging: How Exercise Keeps Chromosomes HealthyShortened telomeres on chromosomes within cells are linked with cell aging and a shorter lifespan. The good news is exercise may help keep those telomeres healthy. Find out more about exercise, telomeres and longevity.
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Dimorphic Sex ChromosomesExplain the formation of dimorphic chromosomes (X and Y)
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Switching Genes: Bacterial Translation, Bacterial Transcription & ChromosomesGenes can be transferred from human cells to chromosomes via insertion of the specific gene of interest into the plasmids of bacteria, which are circular in nature. A plasmid is a circular, independent, self-replicating DNA molecule.
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A Short Explanation of Genes and ChromosomesChromosomes are the building blocks of genetics. They are extremely important, for they house our genes. With a firm understanding of genetics, the possibilities are unlimited.
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Abnormalities In the Sex ChromosomesAbnormalities in the sex chromosomes do occur and examples of these would be a child who receives chromosomes that look like these, X, XXX, XXY, and XYY.
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Researchers Find Link Between Colon Cancer and Abnormal ChromosomesNew study shows that part of an abnormal chromosome is linked to colon cancer. -
Mitosis: Chromosomes Within the DNA of a CellThere are four phases involved in the process of cell division known as mitosis; prophase, metaphase, anaphase and telophase.
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XXY Sex Chromosomes, Gender Identity Conflicts & the Development of Klinefelter SyndromeAs a genetic disorder affecting many, Klinefelter syndrome is believed to be more common than most realize.
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Chromosomes and Chromosomial DisordersChromosomes are what make up our "blueprints".
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Telomeres and Cancer: A New Way to Determine Cancer Risk?Telomeres are little strands of DNA at the ends of chromosomes. Can they be used to predict a person's cancer risk?
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Short Telomeres Are Heritable and Promote Premature Aging in MiceTelomeres are buffers that protect the integrity of chromosomes. Shortening of telomeres has been linked with aging and disease. A new study suggests that short telomeres can actually be inherited and promote a premature aging phenotype.
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How to Avoid Genetically Modified CornIf you aren't too enthusiastic about jellyfish genes and chinchilla chromosomes ending up in your tortillas, you may opt to avoid genetically modified corn, one of the most common GMO foods.
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Aging ReversedStudies with mice show for the first time that aging and aging related diseases can be reversed by activating an enzyme that maintains the telomeres at the ends of chromosomes. -
Fragile X Syndrome is the Number One Inherited Cause of Mental RetardationFragile X Syndrome is the number one inherited reason for mental retardation and the only inherited disorder that can cause autism. One in every 259 women can be a carrier. Do you know if you are?
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What is Karyotyping?A test to look at the chromosomes in a cell sample, karyotyping can help count the number of chromosomes and will look for any structural changes.
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Klinefelter SyndromeMen with Klinefelter Syndrome possess an extra X chromosome. This makes their genetic makeup consist of 47 chromosomes rather than 46. The condition creates sex chromosomes that are represented as XXY as opposed to the normal XY male chromosomes.
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Klinefelter Syndrome: "X" Marks the SpotKlinefelter Syndrome, a non-inherited, random event, genetic disorder that affects males born with extra X-Chromosomes, may create unusual physical traits and cause Lymphedema to develop as well.
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Are Scientists Zeroing in on the Fountain of Youth?By tweaking with the ends of chromosomes in mice, scientists have delayed the aging process.
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The Biology of Aging and Why Our Bodies Get OldWhy do our bodies age? The answer may lie in our chromosomes. Discover why our bodies will not last forever. -
Biology Concepts: MeiosisMeiosis is the process in which sex cells divide into four daughter cells, each with a haploid chromosomes (half the normal amount).
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Living with Turner SyndromeTurner syndrome is a genetic condition that is caused by a defect in the X chromosomes. There is no cure, but there are some treatments that help the child fit in with other children.
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The Do-It-Yourself Hero: Brush Up on Your Interior PaintingThe Do-It-Yourself Hero learns how to achieve sharp, clean paint lines along ceilings and baseboards. The secret to "cutting in" is revealed.
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Finding Information Online About Klinefelter's SyndromeKlinefelter's Syndrome is a genetic condition that affects boys and is characterized by the presence of one or more extra X chromosomes. The Internet is a good source of information for finding out more about Klinefelter's Syndrome.
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Understanding Klinefelter's SyndromeKlinefelter's Syndrome is a genetic condition that affects boy infants and is characterized by the presence of one or more extra X chromosomes. This article explores the basics of how the condition is diagnosed and how it affects males as they mature.
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Researchers Develop Faster Test for Down SyndromeResearchers from California have taken steps toward a faster test for the pre-natal detection of Down syndrome as well as other birth defects that arise from an abnormal number of chromosomes.
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Klinefelter Syndrome--When Your Baby Boy Has a Chromosome AbnormalityThis syndrome affects only males and is caused by the wrong number of chromosomes upsetting the natural balance of the body. This upset leads to a feminine body build (including breasts), underdevelopment of the testicles, and a taller than average height in adulthood. -
The Importance of Genetics: Beyond ChromosomesHow important is the study of genetics? Genetics plays a huge role in our lives, whether we notice it or not.
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Genotype, Phenotype and HeredityWhat is the relationship between genes, chromosomes and DNA? Genotypes, phenotypes and alleles? Read on to learn how inheritance works. -
Triploidy Syndrome: How to Cope with a Devastating Pregnancy PrognosisTriploidy, which is defined as a genetic disorder in which the 23 haploid chromosomes are tripled instead of doubled. Triploidy is not compatible with life, and is often a shocking and traumatic diagnosis for parents to receive during a pregnancy.
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Genetic Terminology: Diploid and Haploid CellsHumans are diploid organisms with two sets of homologous chromosomes, but we also contain haploid sex cells with one set and half the number. -
Theories of Juvenile DelinquencyThere are many different theories that have contributed towards the understanding of juvenile delinquency. These theories fall under three categories: biological, psychological, and sociological theories.
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Which Came First? The Chicken or the Egg?An unusual chicken is born in Colombia.
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What the Cure for Cancer Will BeThe cure for cancer lies in a very mysterious enzyme -- the same enzyme that anti-aging researchers believe is the key to living for hundreds of years.
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Vanessa Williams Brings MY BROTHER to Big ScreenOne in every 733 live births and more than 350,000 people in the US are born with Down Syndrome. See how the new movie MY Brother tells the story from the inner city of NYC -
Is DNA a Religion?Ah, I remember the day when DNA tests were reserved for rapists and murderers. But now deoxyribonucleic acid has moved to the 'A' List. DNA has become fashionable. -
Jim Carrey Takes on a New RoleJim Carrey has always been associated with comedy movies. His newest role is the lead in a psychological thriller. Will it be a hit or a miss?
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Living with Muscular DystrophyMuscular dystrophy is a degentic muscle disease caused by a genetic mutation within the X chromosome. At this time there is no cure and no known prevention.
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Understanding Down SyndromeEveryday a mother somewhere is giving birth to a child with Down syndrome. It is a mistake in the chromosome formation, in which there is an extra 21st chromosome. -
Living with Red-Green DeficiencyA look at a kind of color blindness
