Select all the statements that describe gametes produced by spermatogenesis. Genetic variation between sperm is partly due to genetic material moving across cytoplasmic bridges before spermiogenesis. Spermatocyte division during meiosis II results in the formation of four spermatids, each with half the genetic material of the parent cell. Chromosomal crossover during spermatocyte meiosis leads to different genetic combinations among individual sperm. Unequal distribution of chromosome copies during mitosis results in less genetic material in spermatozoa than in parent cells.

Select all the statements that describe gametes produced by spermatogenesis. Genetic variation between sperm is partly due to genetic material moving across cytoplasmic bridges before spermiogenesis. Spermatocyte division during meiosis II results in the formation of four spermatids, each with half the genetic material of the parent cell. Chromosomal crossover during spermatocyte meiosis leads to different genetic combinations among individual sperm. Unequal distribution of chromosome copies during mitosis results in less genetic material in spermatozoa than in parent cells.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter20: The Reproductive System

Section: Chapter Questions

Problem 11RE

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In cats, each cell normally contains 19 pairs of chromosomes (2n=38). How many chromosomes will be found in: Polar bodies Oogonia Spermatid Spermatozoan Spermatogonium Primary spermatocyte Secondary spermatocyte
The result of spermatogenesis is: 4 viable haploid spermatids. 1 viable haploid spermatid and 3 haploid polar bodies. 4 viable diploid spermatids. 1 viable diploid spermatids and 3 diploid polar bodies. Don't copy from Google
The result of spermatogenesis is: 4 viable haploid spermatids. 1 viable haploid spermatid and 3 haploid polar bodies. 4 viable diploid spermatids. 1 viable diploid spermatids and 3 diploid polar bodies.
Most sexual organisms are either male or female though some are hermaphroditic. In human beings and Drosophila (fruitfly), the sex of an individual is determined by the kind of sex chromosomes they possess. Males have two types of chromosomes, a big chromosome X and a small chromosome Y while females have only one kind, 2X or XX. The X and Y chromosomes segregate during the formation of mature spermatozoa (sprematogenesis) so that a mature sperm contains only either X or Y. What is the probability of getting an X-bearing sperm? A Y-bearing sperm? How many kinds of ova as to the kind of sex chromosome present can be produced? Determine the probability of getting a boy or girl. Show your calculations.
Most sexual organisms are either male or female though some are hermaphroditic. In human beings and Drosophila (fruitfly), the sex of an individual is determined by the kind of sex chromosomes they possess. Males have two types of chromosomes, a big chromosome X and a small chromosome Y while females have only one kind, 2X or XX. The X and Y chromosomes segregate during the formation of mature spermatozoa (sprematogenesis) so that a mature sperm contains only either X or Y. What is the probability of getting an X-bearing sperm? A Y-bearing sperm? How many kinds of ova as to the kind of sex chromosome present can be produce? Determine the probability of getting a boy or girl. Show your calculations.
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.
During spermatogenesis, which of the following options describes when cytokinesis would occur? Following anaphase I Following metaphase II Following telophase I Following telophase II
Polar bodies are generated during 1. Mitosis in females 2. Meiosis in males 3. Meiosis females 4. Meiosis in both females and males
Which of the following are stages in the ovarian cycle? Select all that apply. The primary oocyte completes meiosis I and divides unequally, forming a secondary oocyte and a polar body. The rupture of the main follicle releases a secondary oocyte coated with secreted protein and follicle cells. The oocyte enlarges and secretes a layer of proteins, and the cells around the oocyte divide repeatedly. A A corpus luteum develops from the follicle cells left behind after ovulation, and this structure breaks down if pregnancy does not occur. A fluid-filled cavity begins to form in the follicle's cell layer surrounding the primary oocyte.
Fertilization is the fusion of haploid gametes, ovum and spermatozoon, to form a diploid zygote. Discuss physiologic mechanisms in the male and the female that make sure that indeed only one sperm fertilizes a single egg
TRUE OF FALSE Primary spermatocytes are diploid in number like spermatogonia while spermatocytes are haploid in number. Spermatogenesis is the final stage of reproductive cell division by which there is the development of haploid spermatids into sperm. Spermiation is the event by which sperm are released from their connections to Sertoli cells. Digestive secretions from the small intestine complete the digestion of carbohydrates, proteins, and lipids. Bacteria in the large intestines produce minerals and nucleic acids.
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?