Draw 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

Q: By what mode of cell division would you expect sperm cells to be formed in the haploid male be?…

A: Introduction: The process of sperm cell formation is called spermatogenesis. To create spermatozoa,…

Q: What is the general role of the gene product of SRY in human sex determination? Also, on which…

A: The SRY gene is located on the Y chromosome and it is responsible for sex determination. It is…

Q: Among the following patterns, which is likely to represent the phenomenon of senescence? Please note…

A: We can say that Senescence is the process by which a cell aged and stop dividing any further. This…

Q: (b) P generation P generation Precocious Normal Normal Normal puberty ở Pp puberty ? pp puberty ? Pp…

A: The term precocious puberty means when the development/onset of puberty characteristic or changes…

Q: Which image best depicts a cell in Metaphase 2 of meiosis

A: Meiosis is the process of recombination of genes in the homologous chromosomes for mixing and…

Q: chromosomes

A:

Q: During oogenesis, nondisjunction of X chromosome occurred in meiosis I. If the resulting egg unites…

A: Non disjunction is the failure of chromosomes / chromatids to separate during Anaphase. In Meiosis…

Q: Why are newborns with an abnormal sex chromosome number more likely to survive than those with an…

A: Humans have a total number of 46 chromosomes that is 23 pairs of chromosomes in which 22 of them are…

Q: In human oogenesis how many chromatids does a primary oocyte carry?  22/23/44/46 or 92

A: Gametogenesis is the process of synthesis of gametes .  It is divided into :- A ) Female…

Q: Of the three polar bodies , one came from an unequal division of the ovum , but from where did the…

A: The process of the formation of the egg within the ovary is called oogenesis. This process is also…

Q: Which of the following rows correctly describes the process and the location of cleavage following…

A: The menstrual cycle occurs every 28 days in women and has four phases namely menstruation,…

Q: Which of the following statements are correct? Explain your answers. A.  The egg and sperm cells of…

A: Answer- The gametes are formed after the meiosis in which the chromosomes are present in haploid…

Q: Concerning the sexchromosomes of the XYsystem which type of gametedo the male and the…

A: Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each…

Q: human oogenesis how many chromatids does an oogonium carry?  22/23/44/46 or 92

A: 46

Q: A highly talented 22-year-old female college athlete has just qualified to compete in the Summer…

A: Complete androgen insensitivity syndrome occurs when the body cannot use androgens at all. People…

Q: A report in the New England Journal of Medicine (Seminar et al. 2003) relayed a discovery about a…

A: Suppose, we have two gene a and A  a is carried the disease  Aa- carrier  AA- normal aa- affected…

Q: It is estimated that in about 1/150,000 births, an individual is born with 46 chromosomes, both an X…

A: Introduction: Any form of change that occurs in the DNA sequence is referred to as a mutation. A…

Q: The Amami spiny rat (Tokudaia osimensis) lacks a Y chromosome, yet scientists at Hokkaido University…

A: Reproduction: Important biological process by which new offspring are reproduced by their parents is…

Q: Which of the following can arise from a zygotic mitotic problem in an individual with a normal XY…

A: Following condition arised due to Error in zygote mitosis in an individual with XY genotype.

Q: If a genetic female fetus is exposed to testosterone in utero, would that individual develop a…

A: Men have noticeably more testosterone on average than women, despite the fact that testosterone is…

Q: 1.) If the chromosome number in a sepematogonium is 24, what will be the chromosome number in each…

A: Spermatogenesis is the process of formation of spermatogonia from the germ cells present in the…

Q: Which gene on the Y chromosome triggers the development of male characteristics? What would happen…

A: The Y chromosome is one of two sex chromosomes in therian vertebrates, including homo sapiens, and…

Q: In chickens, a key gene involved in sex determination has recently been identified. Called DMRT1, it…

A: The Sex-determination system determines the development of characteristics of sexual aspects in…

Q: In human oogenesis how many chromosomes does a primary oocyte carry  22/23/44/46 or 92

A: Oogenesis: Oogenesis is the type of gametogenesis by which ova or female gametes are produced.  The…

Q: A secondary oocyte is arrested in what phase of meiosis?

A: The development of the oocyte starts at the time of fetal development; the primordial germ cells…

Q: Would you expect a human embryo to come to term if the sperm that fertilized it was missing…

A: Introduction :  At the Anaphase phase of cell division, chromosomes are redistributed. At the…

Q: Q1: What are the odds that a given egg cell will contain an X chromosome? A Y chromosome? What are…

A: Note: We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: 9.1 Label structures A, B and C. (3) 9.2 State THREE functions of D. (3) 9.3 Fertilisation usually…

A: The female reproductive system consists of sex organs(both internal and external) that helps in the…

Q: Among the following patterns, which is likely to represent the phenomenon of senescence? Please note…

A: None of the above.

Q: As a result of the abnormalities in chromosomes divergence in meiosis, there was formed the…

A: Genetic abnormalities in new born baby.

Q: What may be the most likely reason for the existence of polar bodies? A) They act as a…

A: The production of egg and sperm is called gametogenesis. This takes place during meiosis where the…

Q: Fetus A and Fetus B are developing within their own biological mothers who are unrelated.  Fetus A…

A: Teratogens are substances/ agents which when introduced into the body can hinder the normal growth…

Q: What is double fertilization? Include the fate of the resulting zygote and triploid nucleu

A: In general, fertilisation is a process of fusion of male and female gametes to form a zygote.  In…

Q: Name the technique by which one can disorder any possible chromosomal ormetabolic disorders in…

A: In general genetic disorder is a condition caused by abnormalities in genes or chromosomes.…

Q: When are primary oocytes and spermatocytes produced, and how manygametes result from one diploid…

A: Spermatogenesis as the name suggests is the production of male gametes by the process of meiosis,…

Q: Identify the chromosomal pattern of the cell marked in the diagram (A) n (B) 2n (C) 2(2n) (D) 2(n)

A: Introduction: In males, the primary sex organ is the testis. It is responsible for sperm production.…

Q: whar are the meiotic events that could lead to the birth of an individual with either Patau syndrome…

A: The meiotic events causing Patau syndrome, or Turner syndrome in an individual. Introduction: Patau…