Q: The frog, Rana pipiens, has 13 pairs of chromosomes. How many chromosomes would be expected in: a…
A: Chromosome Rod shaped, Self-replicating dark strained genetic structure containing organized DNA…
Q: What is the implication that sperm cells have a lot of mitochondria and not much other organelles?
A: Mitochondria It is a double membrane bound organelle found in cytoplasm of eukaryotic cells. They…
Q: If human fetus were exposed to very low levels of both testosterone and estrogen during prenatal…
A: People with both male and female anatomy and mixed characteristics are called as intersexes. The…
Q: What do you mean by ovulatory phase?
A: The reproductive cycle in the female primates e.g.monkeys, apes and human beings) is called…
Q: Explain why there is a high level of estrogen and progesterone once in every 28-day uterine cycle of…
A: Menstruation is a complicated mechanism that occurs in every female for about 28 days after puberty.…
Q: Based on your understanding of cellular organelles and their roles, what happens to a sperm cell…
A: The process of reproduction in humans occurs sexually. In this process, the fusion of male and…
Q: If it takes just one sperm to fertilize an egg,why do males make so many?
A: During fertilization, the head of sperm binds to the zona pellucida layer of egg and induce acrosome…
Q: Where does fertilization takes place in human female?
A: The human female reproductive system includes a pair of ovaries, oviducts, uterus, vagina, vulva,…
Q: During which stage of cell division are spermatids formed from the secondary spermatocytes?
A: BASIC INFORMATION GAMETOGENESIS It is the process of formation of gametes. The diploid…
Q: What are the relative sizes of oocytes in a dormant follicle, a growing follicle, and a Graafian…
A: Meiosis is a type of cell division (CD) where four gametes or daughter cells are produced as a…
Q: What do mean by colostrum? Why it is benifical for a new born baby?
A: Glands are important organs located throughout the body. Exocrine and endocrine glands are the two…
Q: What technology would enable a fetus born in the fourth month to survive in a laboratory setting?…
A: First of all, it is nearly impossible that four months (12 or 13 weeks) fetus can survive outside…
Q: Why are Barr bodies not found in males?
A: In 1949, Barr and Bertram first observed a condensed body was called sex chromatin by them and was…
Q: Why should the sperm shrink into an elongated cell with a tail while the egg grows enormously?
A: Introduction :- Most animals generate sperm, also known as spermatozoon or spermatozoa, a male…
Q: Spermatogenesis produces cells that area. diploid and genetically identical to each other.b. diploid…
A: Spermatogenesis: The mature male gametes commonly called sperm but more precisely known…
Q: What structural features of the endometrium and myometrium contribute to their functions?
A: Uterus is one of the important organ of the female body. It serves many important functions in the…
Q: Distinguish the structures of the female reproductive system that (a) produce the egg, (b) transport…
A: Sexual reproduction is a type of reproduction in which organism under goes different cycles like…
Q: Which part of a sperm cell contains enzymes that help the sperm cell fertilize a secondary oocyte?
A: Fertilization is the process of fusion of male and female gametes that result in the formation of a…
Q: A female egg cell has two outer membranes how does the egg cell prevent polyspermy? if polyspermy…
A: Sexual reproduction refers to the form of reproduction that occurs through the union of male and…
Q: Contrast the number of sperm that are produced from oneprimary spermatocyte and the number of eggs…
A: Introduction The life starts from single cell called Zygote. A zygote is formed by the fusion of…
Q: What determines whether an embryo will develop into a male or a female?
A: The process of fertilization is the union of male and female gametes. It results in the formation of…
Q: The myometrium is the muscular layer of the uterus, and the endometrium is the (a) serosa, (b)…
A: The uterus is the pear-shaped organ that belongs to the female reproductive system, and is located…
Q: Why sperms are produced in large numbers?
A: Sperm is the male reproductive cell, or gamete, which contains haploid number of chromosomes and…
Q: Examine the attached fig, which shows oogenesis in animalcells. Will the genotype of the second…
A: Oogenesis is an important gamete development process in the female reproductive system in which egg…
Q: Rarely, two sperm may penetrate a secondary oocyte. Do youthink this fertilized cell will survive…
A: Fusion of only one sperm takes place with the egg.
Q: Name the process of fusion of ovum and sperm.
A: Reproduction is the process by which the organisms propagate their species by the union of the male…
Q: If one follows 50 primary oocytes in an animal through theirvarious stages of oogenesis, how many…
A: Gametogenesis is a process through which male and female gametes (sperms and eggs) are formed in the…
Q: Briefly describe the stages of spermatogenesis in human?
A: The process that involves development of haploid sperms from the germ cells in the semineferous…
Q: Why the polar bodies cannot be fertilized by sperms?
A: A polar body is a tiny haploid cell that forms during oogenesis at about the same moment as an egg…
Q: At puberty, the testes contain a finite number of cells and producean enormous number of sperm cells…
A: Spermatogenesis could be a joint sequence of events throughout maturation of spermatogonia into…
Q: What do you think is the function of cleavage?
A: Cleavage is defined as the repeated mitotic division of the zygote resulting in an increasing…
Q: Despite the presence of So many sperms in the vicinity of an egg cell, only one sperm enters the…
A: Fertilization is a process in which male and female gametes fuse to form a zygote. This zygote…
Q: What are the similarities and differnces between spermatogenesis and oogenesis?
A: Spermatogenesis and oogenesis are two different processes of the production of gametes. It is…
Q: With asexual reproduction, are progeny ever more fit, more adapted than the parent?
A: To explain: Whether progeny are ever more fit, more adapted than the parent with asexual…
Q: How common is sperm DNA fragmentation?
A: Sperms are the haploid male reproductive cells, which fuses with the haploid ovum or egg to form…
Q: What specifically will happen if multiple sperm were able to fertilize one egg during fertilization?
A: It can lead to polyspermy. When the sperm fuses with the egg, it triggers the release of calcium…
Q: List two important functions of gonads.
A: The reproductive system of an organism is also known as the genital system. It is the biological…
Q: Draw a neat labelled diagram of a mature human sperm.
A: Anisogamous reproduction is a type of reproduction in which male and female gametes are different in…
Q: What are the functions of the INTERSTITIAL CELLS and SERTOLI CELLS in sperm development?
A: In males the testis is the primary sex organ in which two major types of cells are present that are…
Q: What is secondary spermatocytes?
A: Sperm is also called as spermatozoa. It is a male reproductive cells, produced by most animals. In…
Q: Why are the testes located outside of the body of organisms?
A: Testes is located outside the abdominal cavity. Testes is present inside scrotum.
Q: Which of these has the largest amount of DNA?
A: Spermatogenesis is the formation of spermatid (n) from spermatogonia(2n). Spermatogonia(2n) - 2…
Q: Why is it risky for a haploid sperm cell to go through diffrencition after meiosis?
A: In males, new germ cells continuously enter meiosis from the time of sexual maturation, and each…
Q: What are two important differences between the processes of spermatogenesis and oogenesis in…
A: The process of formation of gametes is called as gametogenesis. In the diploid organism, the gametes…
Q: During which of the 3 stages of oogenesis does the oocyte nucleus move?
A: Oogenesis- Oogenesis is the process of formation of female gametes. This process begins inside the…
Q: Describe the three manners in which fertilization of human ovum by sperm can be prevented?
A: In humans, sexual reproduction occurs by the process of fertilization of a haploid sperm with a…
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- If human fetus were exposed to very low levels of both testosterone and estrogen during prenatal development, how would the sexual anatomy appear? Why?There are two tubes invovled with the passage of the sperm from the epididymis to the outside. What are those two structures called?Which of the following structure is controlling the rate of spermatogenesis? a.Sertoli cells b.Leydig cells c.Spermatogonium d.Spermatids