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Observation 2: Complete monosomies are generally not viable except for monosomy X. Complete trisomies are viable for chromosomes 13, 18, 21, X, and Y.
Question:
- Why do you think X chromosome is mostly involved?
Step by step
Solved in 2 steps
- Discuss Concepts One of the human chromosome pairs carries a gene that influences eye color. In an individual human, one chromosome of this pair has an allele of this gene that contributes to the formation of blue eyes. The other chromosome of the pair has an allele that contributes to brown eye color (other genes also influence eye color in humans). After meiosis in the cells of this individual, what fraction of the nuclei will carry the allele that contributes to blue eyes? To brown eyes?Describe some syndromes that result from chromosomal nondisjunction?Give several examples of chromosome number disorders.
- 6. Consider your btoehr and your son. a. If you are female, will your brother and your son have essentially identically Y chromosomes? Explain your answer. b. If you are male, will your brother and your son have essentially identical Y chromosomes? Explan your answer.Abnormal chromosome division during mitosis can result in 47,XXX syndrome. Which statement regarding 47,XXX syndrome is FALSE? -Those with 47,XXX syndrome have 3 copies of chromosome 47 -Thise with 47,XXX may have interllectual disabilities -47,XXX syndrome occurs only in the female sex -47,XXX results in a mosaic phenotypeDiploid Number of chromosomes, Sex Chromosomes, (+/- whole) Chromosome (+/- partial) e.g. 47, XY, +14 = male with trisomy of chromosome 14 e.g. 46, XX, 1q+ = female with a partial increase to the length of the long arm of chromosome 1 (partial increases or decreases to a single chromosome still have the same diploid number) What is the notation for the following cases? ( A woman having Turner syndrome.
- 17.Which among the following statement is NOT TRUE about the theory of inheritance? A. The paternal and maternal chromosomes assort randomly during meiosis. B. Genes are transmitted from parent to offspring via chromosomes. C. Gametes contain either a maternal set of chromosomes only or a paternal set of chromosomes only. D. An offspring receives one allele from the first parent and another allele from the other parent, giving the offspring two alleles.Diploid Number of chromosomes, Sex Chromosomes, (+/- whole) Chromosome (+/- partial) e.g. 47, XY, +14 = male with trisomy of chromosome 14 e.g. 46, XX, 1q+ = female with a partial increase to the length of the long arm of chromosome 1 (partial increases or decreases to a single chromosome still have the same diploid number) What is the notation for the following cases? ( A male infant having cri du chat syndrome.Describe how nondisjunction results in aneuploidy disorders, and describe the syndrome/ symptoms/ physical characteristics associated with: A) Trisomy 21, and B) your choice of the sex chromosomes (choose from X-, XXX, XXY, or XYY).
- Diploid Number of chromosomes, Sex Chromosomes, (+/- whole) Chromosome (+/- partial) e.g. 47, XY, +14 = male with trisomy of chromosome 14 e.g. 46, XX, 1q+ = female with a partial increase to the length of the long arm of chromosome 1 (partial increases or decreases to a single chromosome still have the same diploid number) What is the notation for the following case? A man having Klinefelter syndrome and one Barr body.1. What is sex-linked inheritance? Give 3 examples.Diploid Number of chromosomes, Sex Chromosomes, (+/- whole) Chromosome (+/- partial) e.g. 47, XY, +14 = male with trisomy of chromosome 14 e.g. 46, XX, 1q+ = female with a partial increase to the length of the long arm of chromosome 1 (partial increases or decreases to a single chromosome still have the same diploid number) What is the notation for the following cases? ( A female having Edwards syndrome (trisomy 18)