Noonan Syndrome Wendy Saldivar Noonan Syndrome -female pseudo-Turner syndrome‚ male Turner syndrome‚ NS‚ Turner phenotype with normal chromosomes (karyotype) ● ● ● ● no cure 1 in 2‚500 children ○ calm symptoms ○ 7 males:1 female ● genetic counseling stops (delays) development ○ before birth: abnormal characteristics features ■ risks and/or possibilities are ○ facial characteristics explained ○ short stature ■ further studies are scheduled ■ options‚ interventions‚ and ○ heart defects treatments
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the gene on chromosome 5‚ which affects facial development. About 40 percent of the time‚ one parent has the Treacher Collins Syndrome gene. Geneticists can now determine whether the Treacher Collins gene is a new mutation or one that has been passed on. There are new studies being done to see about the possibilities of there being other genes that could be involved with this syndrome. Treacher Collins Syndrome is believed to be caused by a change in the TCOF1 gene on chromosome 5‚ which affects
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Lab 11: Mitosis Mitosis is a part of the cell cycle process by which chromosomes in a cell nucleus are separated into two identical sets of chromosomes‚ each in its own nucleus. Mitosis has several phases during the cell cycle. The experiment obligated pictures of onion root tips under the microscope. The pictures had cells and chromosomes. The pictures also had different phases of mitosis in them. As my hypothesis‚ cells stay in the interphase the longest. To begin the experiment‚ there were pictures
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Control experiments - an experiment in which the variable factors are controlled so as to make it possible to observe the results of varying one factor at a time. Qualitative descriptive research (case studies) – Ultimate goal is to improve practice. This presupposes a cause/effect relationship between behavior and outcome; however‚ this method will ONLY let you hypothesize about variables and describe them. When you move to show correlation among them‚ you’re doing quantitative work. But remember
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Genetic Project: Down Syndrome What is Down Syndrome? Down Syndrome is a chromosomal disorder where a child is born with an extra partial or full chromosome 21‚ thus leading to the over-expression of many genes present on this extra chromosome. Therefore‚ it is neither dominant nor recessive. Down Syndrome affects about 1 in 700 babies born‚ making it one of the most common genetic birth defects in the United States. There are actually 3 different types of Down Syndrome‚ Trisomy 21 (Nondisjunction)
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Define the terms zygote‚ chromosomes‚ genes‚ and DNA‚ and explain how they are related. What do you think of when you hear the words zygote‚ chromosomes‚ genes and deoxyribonucleic acid also known as DNA? Those words all are contribute of the genetic make-up of your life. Zygote‚ chromosomes‚ genes and DNA are all related. They are extremely important in life and we need those to even be here today. Without those we are nothing. The zygote is a single cell formed at conception. The zygote contains
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have half the chromosome number of the parent cell. Mitosis is best observed in cells that are growing at a rapid pace‚ such as in the onion root cell tips or at Drosophila giant chromosome. The root tips contain a special growth region called the apical meristem where the
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microscope to examine the size‚ shape‚ And number of Chromosomes in a sample of body cells. Extra‚ missing‚ Or abnormal positions of chromosome pieces can cause problems with a persons growth‚ development‚ and body functions. In karyotyping‚ the chromosomes in a cell are stained with a dye to make the bands of each chromosome visible. Banding helps show differences in structure among the chromosomes and helps arrange them into pairs. The chromosomes are then photographed through the microscope. The
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in which a cell breaks apart its chromosome to eventually produce two identical daughter cells. The cell spends 10% of its time in mitosis. The cell goes through four stages in order to complete this task. The stages are Prophase‚ Metaphase‚ Anaphase and Telophase. Mitosis only occurs in eukaryotic cells and the process is different for different species. Mitosis is fast and very complex. The first phase is Prophase. In prophase‚ the chromosomes the chromosomes start to coil‚ shorten‚ and become
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Inheriting Chromosomes A. Inheritance of Genes * Parents endow their offspring with coded information in the form of hereditary units called genes * Most genes program cells to synthesize specific enzymes and other proteis‚ whose cumulative action produces an organism’s inherited traits * In animals and plants‚ reproductive cells called gametes are the vehicles that transmit genes from one generation to the next * A gene’s specific location along the length of a chromosome is called
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