at would nappen il stem celis divided ike spermatogonia. O There is a huge stock of stem cells in the testes, but spermatogenesis would not be able to continue properly. O There is a huge stock of stem cells in the testes. Thus nothing would change and spermatogenesis would continue. O The supply of stem cells would be used up, but spermatogonia would start to divide like stem cells and spermatogenesis would continue. O The supply of stem cells would be used up, and spermatogenesis would not be able to continue. submit Previous Answers Request Answer < Incorrect; Try Again; 5 attempts remaining

at would nappen il stem celis divided ike spermatogonia. O There is a huge stock of stem cells in the testes, but spermatogenesis would not be able to continue properly. O There is a huge stock of stem cells in the testes. Thus nothing would change and spermatogenesis would continue. O The supply of stem cells would be used up, but spermatogonia would start to divide like stem cells and spermatogenesis would continue. O The supply of stem cells would be used up, and spermatogenesis would not be able to continue. submit Previous Answers Request Answer < Incorrect; Try Again; 5 attempts remaining

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter17: Development And Aging

Section: Chapter Questions

Problem 5SQ: _________ is the gene-guided process by which cells in different locations in the embryo become...

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_________ is the gene-guided process by which cells in different locations in the embryo become specialized. a. Implantation b. Neurulation c. Cell differentiation d. Morphogenesis
At puberty, the testes contain a finite number of cells and producean enormous number of sperm cells during the life span of a male.Explain why testes do not run out of spermatogonial cells
A previously infertile couple wishes to have a pregnancy but the man produces non-motile sperm.If it were possible to fertilize one of the woman's eggs by removing a sperm nucleus and injectingit into the egg, could this procedure ever produce viable offspring? Why or why not?
Which mechanism prevents an ovum from being fertilized by multiple sperm cells? A. Once a sperm penetrates the jelly-like coating of the egg, no other sperm cell can penetrate the coating. B. When a sperm fuses with the plasma membrane of the egg, depolarization of the membrane occurs. C. The egg can survive in the Fallopian tube for 24 hours s it does not have mitochondria to produce energy. D. When more than a single sperm cell fuses with the plasma membrane, multiple zygotes can form, leading to the twin or triplets.
How does the production of sperm differ from the production of eggs? a. Sperm production involves meiosis, whereas egg production involves only mitosis. b. Meiosis during sperm production produces four sperm cells, whereas meiosis during egg production produces only one functional egg cell. c. Sperm are haploid, whereas eggs are diploid. d. Sperm production begins during fetal development, whereas the meiotic process that begins egg production doesn’t begin until puberty
In animals, a key difference between spermatogenesis andoogenesis is thata. only oogenesis involves meiosis.b. only spermatogenesis involves meiosis.c. spermatogenesis produces four sperm, whereas oogenesisproduces only one egg cell.d. None of the above describes a difference between the twoprocesses.
which germ layer (tissue) gives rice to our nervous system and outer coverings. a) endotherm b) ectoderm c) mesoderm d) endoderm
Subject (Developmental Biology) The Following are parts of sperm cell, what their importance in fertilization? A. Acrosomal Vesicle B. Nucleus C. Mid piece D. Mitochondrion E. Plama membrane F. Tail
How do you expect Kartagener syndrome leads to infertility? A. The lack of a plasma membrane means that pathogens and foreign substances can permeate the sperm and damage the DNA B. The lack of microtubules mean the sperm do not have tails and cannot swim to fertilize the egg C. The lack of dynein means that the sperm cannot bend their tails to swim and fertilize the egg
In a possible future scenario, male fertility drops to zero, but, luckily, scientists develop a way for women to pro-duce babies by virgin birth. Meiocytes are converted di-rectly (without undergoing meiosis) into zygotes, which implant in the usual way. What would be the short- andlong-term effects in such a society?
Rarely, two sperm may penetrate a secondary oocyte. Do youthink this fertilized cell will survive for long? Why or why not?
A female egg cell has two outer membranes how does the egg cell prevent polyspermy? if polyspermy happens, will the fertilization be viable?