of the given answers What are the possible sex chromosome combinations for children with the pseudohermaphroditic condition congenital adrenal hyperplasia (CAH)? Check All That Apply XXXX XYXY XY lacking the SRY geneXY lacking the SRY gene XX with a copy of the SRY gene
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of the given answers What are the possible sex chromosome combinations for children with the pseudohermaphroditic condition congenital adrenal hyperplasia (CAH)?
-
XXXX
-
XYXY
-
XY lacking the SRY geneXY lacking the SRY gene
-
XX with a copy of the SRY gene
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- With reference to sex determination in humans, discuss: i) X chromosome inactivation; and ii) Testicular feminizationPlease explain Androgen Insensitivity Syndrome (ALS). What is the phenotype of these individuals? What is their chromosomal makeup?Why does this disorder occur?A women is heterozygous, Aa, for classic albinism and this gene maps to chromosome 11, and is a carrier for haemophilia, an X-linked trait (H/h). Provide a diagram of chromosomes 11 and the sexchromosomes (show the alleles associated with albinism and haemophilia) in the cells involved with normal oogenesis for this female. Start with the oogonium and end with the mature ovum; you can ignore all polar bodies. Your diagrams should show the chromatids clearly and all cells must be labelled. Indicatethe total number of chromosomes and chromatids for each cell stage.
- In a germline cell of genotype Ff Qq where genes F and Q are on different chromosomes, capital and lowercase letters represent alternate alleles (versions or variants) of each gene. If this cell undergoes normal meiosis to produce sperm, what are the possible sperm genotypes? FQ, fq, Fq, fQ Ff, Qq, FQ, fq, Fq, fQ O Ff, Ff, Qq, Qq O F, f, Q, qAssume that you are married and by chance upon submission for an amniocentesis prenatal checkup it resulted that your baby has more than the total number of chromosomes. What will your final decision to this finding? Answer must not exceed 30 words for 15 pts.Identify the stages of meiosis described by the following meiotic events/conditions/terms. Write prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II, or telophase II. In case the events are found in both stages, write the stages both. 1. Separation of homologous chromosome 2. Four haploid daughter cells are formed.
- Discuss whether the following individuals (1) have male or female gonads, (2) are phenotypically male or female (Wolffian or Muellerian ducts. External genitalia) and (3) are sterile or fertile. a) XY, homozygous for a recessive mutation in the testosterone biosynthetic pathway, producing no testosterone b) XX, heterozygous for a dominant mutation in the testosterone biosynthetic pathway, which causes continuous production of testosterone1) A variety of abnormalities in the numbers of sex chromosomes exist because of nondisjunction during gametogenesis. Discuss the signs and problems associated with conditions such as Klinefelter and Turner syndromes.Fill in the cells below showing the process of meiosis of the male's sex chromosomes with non- disjunction occurring during meiosis I. DO NOT show crossing over. Prior to meiosis 44 +XY What are the possible abnormal gametes the male can produce with non-disjunction occuring in Meiosis I? Identify the possible sexual aneuploidy syndrome if these abnormal sperm cells are fertilized by a normal egg cell. Could this man father a Tuner syndrome (XO) child? Could this man father a Klinefelter's syndrome child (XXY)?
- Earlobes can be attached to the face or non-attached. An attached earlobe is a recessive trait. A female with attached earlobes (Il) has a child with a man with non-attached earlobes. He is heterozygous for this trait. Questions: a. What are the possible genotypes of the egg the woman can produce? b. What are the possible genotypes of the sperm the man can produce? c. What is the genotype ratio for the offspring? d. What is the phenotype ratio for the offspring? e. What is the couple's chance of having a child with attached earlobes?Identify the stages of meiosis described by the following meiotic events/conditions/terms. Write prophase I, metaphase I, anaphase I, telophase I, prophase II, metaphase II, anaphase II, or telophase II. In case the events are found in both stages, write the stages both. 1. Formation of chiasma 2. Each chromatid is considered as full-fledged chromosome. 3. Chromosomes begin to pair off. 4. Spindle microtubules start to attach to the centromere. 5. Tetrads are aligned at the middle of the cell. 6. The sister chromatids separate. 7. Produce 2 haploid daughter cells. 8. The chromosomes line up at the middle of the cell. 9. The sister chromatids move together to the opposite poles. 10. The chromatids reach the poles. 11. The chromosomes in each daughter cell are still duplicated.12. Spindle microtubules attach in the centromere of each haploid daughter cell. 13.Fill in the cells below showing the process of meiosis of the male's sex chromosomes with non- disjunction occuring during meiosis II. DO NOT show crossing over. Prior to meiosis 44 +XY What are the possible abnormal gametes the male can produce with non-disjunction occurring in Meiosis II? Identify the possible sexual aneuploidy syndrome if these abnormal sperm cells are fertilized by a normal egg cell. Could this man father a Tuner syndrome (XO) child? Could this man father a Klinefelter's syndrome child (XXY)?