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Question:-
Describe or demonstrate the mechanism of sex determination in humans, grasshoppers, moths,, fruit flies and bees.
Step by step
Solved in 2 steps
- Answer the ff. What steps in male reproductive physiology do you think might be possibly blocked pharmacologically in order to produce such a contraceptive for males? What are the negative effects of candidate drugs currently proposed for the male hormonal contraceptive? What alternative ways are considered that will reduce these effects?Amniocentesis for sex determination is banned in our country. Is this ban necessary? Comment.Direction: Explain the following in paragraph form consists of at least five sentences for each question. Compared to separate sexes and assuming self-fertilizing is not possible, what might be one advantage and one disadvantage to hermaphroditism?
- Direction: Explain the following in paragraph form consists of at least five sentences for each question. 1.What might be a disadvantage to temperature-dependent sex determination? 2.Compared to separate sexes and assuming self-fertilizing is not possible, what might be one advantage and one disadvantage to hermaphroditism?Cite differences between grasshopper and rat testis. Cite differences of spermatogenesis on grasshopper and rat.Mutations Can Uncouple Chromosomal Sex from Phenotypic Sex Give an example of a situation in which genetic sex, gonadal sex, and phenotypic sex do not coincide. Explain why they do not coincide.
- Please answer fast True or False? Presence of Y chromosome along with one X chromosome ensures Beta-catenin accumulation during embryogenesis.Need help with three question. Multiple choise. 1.) How is the outcome of meiosis different from the outcome of mitosis? a.) The daughter cells produced in mitosis are genetically different from the parent cells, but have the same number of chromosomes, while these are genetically similar in case of meiosis and have fewer chromosomes. b.) The daughter cells produced in mitosis are genetically similar to the parent cells and have the same number of chromosomes, while these are genetically different in meiosis and have half the number of chromosomes. c.) The daughter cells produced in both cases are genetically similar to the parent cells, but in meiosis, there are fewer chromosomes. d.) The daughter cells produced in both cases are genetically different, but in mitosis, there are fewwer chromosomes in daughter cells. 2.) What would be the effect on the number of chromosomes in gametes due to non-disjunction? a.) The chromosome number of the gametes remains the same as the parent…Subject [Developmental Biology] Question; In an OUTLINE FORM, describe briefly the phases of neurulation. Mention some signaling molecules, genes, morphogenetic factors, and other factors, intrinsic/extrinsic factors responsible for each phase. NOTE [Follow the instruction]
- Please answer the following: 1.Identify the changes in sensitivity that occur in the hypothalamus, pituitary and gonads as a boy or girl approaches puberty. Explain how these changes lead to the increases of sex steroid hormone secretions that drive many pubertal changes. 2.Explain how the internal female and male reproductive structures develop from two different duct systems. 3.Explain what would occur during fetal development to an XY individual with a mutation causing a nonfunctional SRY gene.which genetic disorder fits below description 47 chromosome; XXY karyotype. Affected individuals have low levels of testosterone, enlarged breasts, small testicles, and are phenotypically male. 47 chromosomes; XXY karyotype. These males appear to be normal although some display slight differences in their EEG patterns. 45 chromosomes; XO karyotpe. These individuals are phenotypically female but have streak ovaries and no ova are prduces and they do not menstruate. This is the only survivable disorder involving a chromosome number less than 46.a) Define Disorders of Sex Development (DSD). b) Explain why gene mutations affecting gonad development may lead to DSD conditions. c) What is sex-chromosome mosaicism? When and how may this mosaicism arise?