Question 1: Now complete the sketch for an XY human male cell undergoing spermatogenesis if a nondisjunction happened to the sex chromosomes in meiosis I. Keep track of all the chromosomes, but you only need to draw the sex chromosomes. C OOOO O-
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- Scenario 1: Examine the sketch of a diagram of an XY human male cell undergoing spermatogenesis. Then using the spaces provided, fill in the blanks for the scenarios described: "Normal Spermatogenesis" 2n=46 1n=23 1n=23 xX 1n=23 1n=23 Y 1n=23 1n=23Discuss and compare the source (mechanism) and types of increased mutations in older mother oocytes versus older father sperm (ch 4 and ch 7.) (Diagrams may be helpful if needed to convey your thoughtst of 1 One cause of male infertility is congenital absence of the vas deferens (CAVD). An individual with CAVD is born without a portion of the epididymis, vas deferens, and seminal vesicle, resulting in the obstruction of the passage of sperm from the testes. In order to father a child, those with CAVD must undergo surgical aspiration of sperm cells from the testes to be used for in vitro fertilization. Select one: OA. Structure b OB. Structure d OC. Structure e OD. Structure f 你 b d The structure from which sperm cells must be retrieved, in order for an individual for CAVD to produce children is
- Use the following information to answer numerical-response question 1. Human Reproductive Systems Numerical Response 1. Number: Description: Site of spermatogenesis 爸 Site of oogenesis Match four of the structures of the human reproductive systems numbered in the diagrams with their descriptions given below. Site of production of fructose 5 6 (Record all four digils of your answer in the response area at the bottom of the screen.) 7 LONCO Typical site of first mitotic division after fertilizationRespond to the following statements in reference to the five stages of sperm development listed below. Answers may be used more than once or not at all. - v Haploid cells resulting from meiosis II of a secondary spermatocyte. This continues to undergo mitosis throughout the reproductive life of the male. VThis represents the product of the first meiotic division. VThis is a diploid mitotic product that then undergoes meiosis. The male sex cell is fully formed at this stage of development. a. Spermatogonium b. Secondary spermatocyte C. Primary spermatocyte d. Spermatid e. SpermDraw a schematic diagram showing spermatogenesis vis-à-vis oogenesis. Label the stage of development and chromosome number of daughter cells at the following levels of maturation: (a) mitotic proliferation (b) meiosis I and II (c) maturation. Table 2: Spermatogenesis vis-à-vis Oogenesis Spermatogenesis Oogenesis
- There are 6 major events in fertilization. Discuss the process of fertilization or conception, with emphasis on the sperm-egg interaction. Proteins on the sperm plasma membrane bind to ZP3 molecules within the zona pellucida of the egg. Why is this event important? Zona binding triggers the acrosome reaction, in which the sperm plasma membrane fuses with the outer acrosomal membrane, causing exocytosis of acrosomal contents. What is in the "acrosomal content"? Acrosomal enzymes begin to dissolve a hole in the zona pellucida. This enzymatic degradation, accompanied by rapid sperm tail beating, moves the sperm through the zona. Where does the sperm intend to reach?With relevance to sex determination in humans, discuss: i) X chromosome inactivation; and ii) Testicular feminization Provide detail examples.Q =ZFEnwngiKHy7x16iaAVFWd_WDmYw: 1670237180486&source=lnm... ols diagrammatic presentation Chegg fertilization positive LH S Ges Gin FSH High levels of estrogen in the blood exert release of inhibits menstruation female reproductive system Influence of hormones on the ovarian cycle Complete the following statements to assess your understanding of the influence that hormones produced by the anterior pituitary have on the ovarian cycle. Not all choices will be used. ovulation corpus luteum The increasing amount of progesterone in the blood the luteal phase comes to an end. N G g and to halt the follicular phase of the ovarian cycle. During the luteal phase, LH promotes the development of the progesterone. A spike in estrogen levels also causes a sudden secretion of a large amount of hypothalamus. This leads to a surge of LH, which causes cycle. During the follicular stage, from the anterior pituitary stimulates the development of an ovarian follicle, which produces estrogen and a small…
- A normal somatic cell in horses has 64 chromosomes. Give the number of chromosomes and number of DNA molecules that will be present in the following horse cells: spermatogonia, first polar body, primary oocyte and, secondary spermatocyte.a. If cell division during gametogenesis is non-meiotic, what is its consequence to the future generations of diploid organisms? b. How does non-disjunction in meiosis lead to numerical chromosomal aberration?If one follows 32 primary oocytes in an animal through their various stages of oogenesis, how many secondary oocytes would be formed? How many first polar bodies would be formed? How many ootids would be formed? If one follows 32 primary spermatocytes in an animal through their various stages of spermatogenesis, how many secondary spermatocytes would be formed? How many spermatids would be formed? Secondary oocytes First polar bodies Ootids Secondary Spermatocytes Spermatids