Amniocentesis essay Amniocentesis referred as amniotic fluid test (AFT)‚ is a medical processes used for pregnancy moreover in the early it used for diagnosis chromosomal and other fetal problems such as; Down syndrome‚ Trisomy 13/18‚ Fragile X‚ Rare-inherited metabolic disorders‚ Neural tube defects by alpha-fetoprotein levels. This technique is used full but more ever there are lots of risk however later on this technique get developing‚ it also can uses to detect problems such as; Infection
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process to create energy. When or where would this process occur? 12. What does the cell use the released energy for? 13. Diagram the steps of mitosis. Label the centrioles‚ chromosomes‚ chromatin‚ chromatids‚ nuclear membrane‚ centromere‚ spindle fibers. 14. What is the purpose of mitosis? What is the purpose of meiosis? Define homologous chromosomes‚ sister chromatids. 15. Fill in the following table: Result is Haploid or diploid Function of process # of cells produced
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Lab manual/results/online article condensed notes Lab 1 · DNA is made up of deoxyribonucelotides · Components of DNA/RNA includes a 5 carbon sugar‚ a phosphate group‚ and a nitrogenous base · the negative charge associated with DNA/RNA is due to the phosphate groups · DNA is linked together by phosphodiester bonds (they are covalent bonds) · the energy required to create these bonds is from the cleavage of pyrophosphate‚ refer to figure 1.3 on page 4 and below. ·
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4.1.1 State that eukaryote chromosomes are made of DNA and proteins.(1) State means to give a specific name‚ value or other brief answer without explanation or calculation. The chromosome is composed of two main molecules. a) DNA b) Proteins called histones. This image was taken shortly after DNA a replication but before the prophase. It is composed of two daughter chromatids joined at the centromere. The chromosome is super coiled by a factor around x16‚000. The DNA molecule is about 1
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Chapter 5: Skeletal FIBROUS joints form soft spots on a baby’s head. The nose is formed mostly of bone. – FALSE (cartilage) An immature bone cell found growing bone – OSTEOBLAST. An epiphyseal plate of cartilage forms at either end of a long and is the future growth plate may grow longer. –TRUE The Tibia of the lower leg forms the “shin bone”. –TRUE Ligaments connect the bone to bone at places called joints. –TRUE The lungs and heart are protected by the ribs‚ sternum‚ and
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premature termination of transcription. 3. The cell-cycle checkpoint that occurs during mitosis causes nuclear division to pause until A. DNA replication is complete. B. all chromosomes have attached to the mitotic spindle. C. cytokinesis occurs. D. telophase begins. E. chromosomes have fully condensed (shortened). 4. DNA replication occurs during ______ of the cell cycle. A. prophase B. G1 phase C. mitosis D. G2 phase E. S phase 5. Three point crosses are used to determine: A. The exact
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Score________________ Section___________________________________ Date_________________ EXERCISE NO. 1a MITOSIS OBJECTIVES The students should be able to: 1. identify the different steps involved in mitosis and meiosis; 2. describe the behavior of the chromosomes during each stage of cell division; 3. identify specific events in mitosis and meiosis that allow the inheritance of traits and generation of variation. MATERIALS A. Microscopic Examination Compound
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morphological differences | Cocci | A micro-organism whose overall morphology is sphere | Plasmid | A circular molecule of DNA that is commonly found in bacteria | Gametophyte | A haploid plant in sporic reproduction that produces gametes by mitosis | Lichen | An organism that results from a mutualistic relationship between a fungus and photosynthetic plant or alga. | Biodiversity | The variety and abundance of organisms‚ genes and ecosystems found in a given area | Cell membrane | Semi-Permable
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section 30 October 2012 Sordaria Lab Meiosis and genetic diversity in the model organism‚ Sordaria Introduction Meiosis is a process in which a cell divides to form four haploid (1N) cells. The Sordaria lab is a perfect way to see an example of how meiosis impacts the life of an organism. Meiosis can be broken down into parts that contain a few stages. These stages are similar to that in Mitosis (Prophase‚ Metaphase‚ Anaphase‚ and telaphase.) during Meiosis I‚ crossing over and independent assortment
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In prokaryotes‚ it’s easier to make DNA replication because of the lack of a nucleus‚ but to do DNA replication in a eukaryotic cell is more difficult. DNA of an eukaryotic cell is in chromatin form to fit into the small nucleus for the replication to occur‚ first the DNA should open. This is because it is harder for eukaryotes to carry out DNA synthesis. Replication of DNA in a prokaryote is different from a eukaryote. In a prokaryote they have a single origin where the replication process starts
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