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What biological mechanism allows humans with an XXX genotype to be healthy individuals?
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- What is the phenotype of an individual with the genotype XXXY? female, with an inactivated Y chromosome male, with one Barr body female, with one Barr body O male, with two Barr bodies female, with an inactivated Y chromosomeUnder what condition might a human male have the XX sex chromosome complement? It is not possible. She has an X chromosome lacks an active Xist gene. He has an X chromosome that carries an SRY gene. He has a mutation that renders the SOX9 gene non-functional. He has a mutation that renders the SRY gene non-functional.A human is discovered to have a sex chromosome karyotype of XXY. What phenotypic sex would this individual be and how many Barr bodies would be present in somatic cells. Group of answer choices male: one male: two female; none hermaphrodite; one female; one
- Which of the following statements is INCORRECT? Synapsis of the X and Y chromosomes in males occurs only at the pseudoautosomal regions. Genes in the pseudoautosomal regions on the Barr body X chromosome escape inactivation. Nonhomologous regions of the X and Y chromosome condense to form a sex vesicle during leptotene. Although one of the two X chromosomes in XXY males becomes a Barr body, XXY males have three doses of the genes in the PAR regions.Equalizing the Expression of X Chromosome Genes in Males and Females How many Barr bodies would the following individuals have? a. normal male b. normal female c. Klinefelter male d. Turner femalePlace the labels In the correct rows. A label may be used once, more than once, or not at all. An example in humans is XO Usually lethal in humans Rarely lethal in humans 3n Not having an exact multiple of the haploid number of chromosomes 2n-1 2n+1 1n An example in humans is XXY Aneuploid Monosomy Trisomy Definition Lethality Example
- Fill in the cells below showing the NORMAL process of meiosis of the male's sex chromosomes (XY – the X and Y are representing the entire chromosome, and remember X and Y act like a homologous pair). DO NOT show crossing over. prior to meiosis 44 +XY What are the possible normal gametes produce after meiosis division? Identify the possible sex of the offspring if these normal sperm cells are fertilized by the egg cell.Place the events of meiotic crossover in order of their occurrence, from the start of prophase I to the start of metaphase I. Prophase I Metaphase I Answer Bank Chromosomes begin to condense. Chromosomes condense further as chiasmata become more visible during separation. The synaptonemal complex aligns homologs into tetrads. Crossing over occurs, during which non-sister chromatids exchange DNA. Homologs are connected by chiasmata as the synaptonemal complex begins to separate.What types of gametes are formed by the following genotypes? All gene pairs are segregating independently. AABbCC AABBCcDD
- Genetic disorders such as Turner syndrome caused by non-disjunction in which the chromosomes fail to distribute equally in the daughter cells, this indicates that there is a failure in Anaphase stage. Select one: O True O FalseGender is someone’s conscious and unconscious feelings ofbelonging to one sex or another. Each year, about 1 in 4500children are born with a disorder involving sexual development,where the chromosomal, gonadal, or anatomical sex isatypical. Here we will consider two similar cases with different outcomes.In case 1, a 2-year-old child displayed a mosaic chromosomecomposition of 45,X/46,XY, with one ovary, one testis, a uterus, andambiguous genitalia. In case 2, a fetus was diagnosed with a mosaicchromosome composition of 46,XX/47,XXY, and after birth, also displayedone testis, one ovary, a uterus, and ambiguous genitalia. Thechild in case 1 was adopted from an orphanage and raised as a girl.After consultation with the medical team, the parents decided tocontinue raising the child as a girl and requested surgery that wouldassign the child female sex characteristics. In case 2, the parentsdecided to forego treatment and let the child make the choice aboutgender later in life and to remain…Which of the statements is FALSE? Somatic cells are diploid in diploid organisms. Gametes are produced from meiosis by germline cells. Somatic cells are capable of both mitosis and meiosis. Somatic cells and gametes from the same organism have different chromosomal complements.
