too few monosomy Nondisjunction can produce abnormal egg and sperm cells with extra or chromosomes separate trisomy If a normal sperm combines with an egg cell that has an extra chromosome, results and one chromosome is present in three copies. Nondisjunction: monosomy and trisomy Complete the following statements regarding the results of nondisjunction When homologous chromosomes fail to align no correctly during meiosis, nondisjunction occurs. Some choices will be used more than once and others not at all Jacobs Syndrome Klinefelter Syndrome Individuals are short with broad chests and folds of skin on the back of the neck Caused by changes in autosomes Individuals are female with more than two X chromosomes and extra Barr bodies in the nucleus Speech and language delays can result Individuals are females with two X chromosomes and no Barr bodies in the nucleus Individuals have only one sex chromosome Individuals are males with an extra Y chromosome Individuals are males with two X chromosomes and one Y chromosome urner Syndrome Poly-X Females Underdeveloped reproductive system results Subtle symptoms result Individuals are taller than average with persistent acne Individuals tend to be tall and thin and may have menstrual difficulties Caused by changes in sex chromosome number Reset Syndromes associated with changes in sex chromosomes Match the following syndromes to their descriptions below. They tend to have long limbs overdeveloped Jacobs reproductive organs, and can have learning difficulties hormone XYY They tend to be tall, have persistant acne, and have speech and reading problems underdeveloped Males with an extra X chromosome have the genotype and are said to have syndrome. ![]() with an extra Y chromosome have the genotype antiviral poly x and are said to have syndrome. They tend to have physical differences and reproductive organs, but tend to lead normal Turner XXY lives with treatment. They tend to be very tall and lean and can have learning difficulties and reproductive problems, but are often typically developed otherwise ХО xXX Females Klinefelter with only one X chromosome have the genotype and are said to have syndrome. with an extra X chromosome have the genotype and are said to have syndrome. Sex chromosome aneuploidy II Complete the following paragraph to describe the human diseases that can result from abnormal numbers of sex chromosomes. Turner syndrome Example of monosomy Genetically and physically female Example of trisomy Results from deletion on sex chromosome Klinefelter syndrome Genetically and physically male Genetically male, physically female Causes underdevelopment of female reproductive organs and can cause physical differences Causes underdevelopment of reproductive organs, learning difficultles, and long limbsĮffects of mutations on chromosome structure Complete the following statements to describe the effects of chromosomal mutations Deletions, duplications, inversions, and translocations are examples of chromosomal homologous 360 a different nonhomologous Deletions occur when part of a chromosome is 90 180 Duplications occur when a chromosomal segment is present more than once on chromosome the same syndromes A translocation is movement of a chromosomal segment to a chromosome missing mutations Inversion results from a chromosome segment being turned around degrees diseases These changes cause various, or groups of symptoms that always occur together Classify the following characteristics depending on what type of sex chromosome aneuploidy is described. Sex chromosome aneuploidy Aneuploidy is the incorrect number of chromosomes in a cell. sex chromosomes A normal karyotype shows 23 sets of chromosomes, 22 of which, and one set are type pairs A karyotype can be examined to determine chromosomal such as extra or missing chromosomes. These are displayed as numbered arranged by division autosomes To obtain this picture, a chemical is used to stop cell such that the chromosomes are condensed and size visible with a microscope. abnormality A karyotype is essentially a picture of the chromosomes found within the nucleus of a cell. ![]() The purpose of a karyotype Complete the following statements to explain the purpose of a karyotype.
0 Comments
Leave a Reply. |