5. How important is independent assortment? What are the consequences of Nondisjunction? Independent assortment is the random assortment of chromosomes during the production of gametes‚ the results are genetically unique individual gametes‚ it’s also important for survival. The consequences result in a gamete or egg cells too have too few or too many chromosomes. This can lead to different
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mutations in our bodies. The second way to get mutations is from an organism’s parents; the mutation is passed on through DNA. When a mutation is formed in the body‚ sometimes it is transferred into gametes‚ or the reproductive sex cells‚ like the sperm and the egg. Then‚ during reproduction‚ the mutant gametes get transferred on to the new organisms DNA. Although both parents have mutations that they pass on to the child‚ most of the mutations come from the dad. While females are born with all of the
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Balao‚ Mike Paul C. MT1311 Chromosomal aberrations are abnormalities in the structure or number of chromosomes and are often responsible for genetic disorders. For more than a century‚ scientists have been fascinated by the study of human chromosomes. It was not until 1956‚ however‚ that it was determined that the actual diploid number of chromosomes in a human cell was forty-six (22 pairs of autosomes and two sex chromosomes make up the human genome). In 1959 two discoveries opened a new era
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Meiosis? (2pts) Body Cells 5. How many divisions are there in mitosis? Meiosis? (2pts) one 6. Cells produced through mitosis are genetically identical daughter cells‚ whereas cells produced through meiosis are genetically four genetically different gamete cells. (2pts) 7. Describe the process of binary fission. (2pts) Duplicates its DNA and divides into two new organisms. 8. Explain the process of budding. (2pts) A small part of the parent organisms body breaks off and grows into a new organism
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plants. The plant life cycle is consisted of two parts: the gametophyte phase where it produces gametes by mitosis and the sporophyte phase which produces spores by meiosis 2. Contrast the life cycle of plants to that of animals: Typical life cycle: alteration of generation (plants)‚ diploid (animals) Resulting structure from meiosis: spores-plants‚ gametes-animals Occurrence of mitosis: gamete production-plants‚ zygote to individual-animals 3. Compare mosses and ferns by completing the following
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Chapter 15 The chromosomal basis of inheritance Key ideas: 1) Mendelian Inheritance has its physical basis in the behavior of chromosomes during sexual life-cycle. 2) Morgan traced a gene to a specific chromosome. 3) Linked genes tend to be inherited together because they are located on the same gene. 4) Independent assortment of chromosomes and crossing over produce genetic recombinants. 5) Geneticists use recombination data to map a chromosome’s genetic locus. 1900 Biology finally
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|Asexual reproduction | |1. It is characterized by the fusion of two cells (Gametes) usually coming from |1. It is a type of reproduction that does not involve the union of gametes. | |two parents. | | |2. New plants are produced
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BLUEPRINT OF LIFE: CHAPTER 2 GENETICS Gregor Mendel’s experiments helped advance our knowledge of the inheritance of characteristics 2.1 GREGOR MENDEL AND THE BIRTH OF GENETICS Gregor Mendel (1822-84) – ‘the father of genetics’ Born in Austria He was an Augustinian monk He worked as a teacher and as an investigator He observed the growth of peas He recorded the ratios of characteristics that appeared in the offspring His discovery stated he observed a pattern in the inheritance of characteristics
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Chapter 8 The cellular Basis of Reproduction Inheritance Rain Forest Rescue • Scientists in Hawaii are attempting to "rescue" endangered species from extinction by promoting reproduction • Reproduction is one phase of an organism’s life cycle – Sexual reproduction • Fertilization of sperm and egg produces Offspring – Asexual reproduction • Offspring are produced by a single parent‚ without the participation of sperm and egg
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statistical analysis of the results of his experiment‚ Mendel came up with two Laws of Genetics‚ The first law called the law of segregation which states that there are pairs of particulate factors which control each trait and they segregate during gamete formation and then come together randomly at fertilization. The second Law‚ the law of independent assortment states that the inheritance of a certain gene is not affected by another gene on another chromosome. This current experiment is a replica
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