Why is it necessary for gametogenesis to reduce the chromosome number of the sex cells by one-half?

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: if cell division during gametogenesis is non-meiotic, what is the consequence to the future…

A: BASIC INFORMATION CELL DIVISION  It is necessary for all the cells In this the parent cell divides…

Q: • How many sperm cells will be produced by 800 spermatids? (number only) • If there are 50 secondary…

A: The secondary spermatocyte divides into 2 haploid spermatids which transforms into a mature sperm by…

Q: What type of gamete is produced by an antheridial head? By an archegonial head?  Are these produced…

A: The anthredial head and archegonial head are present in the bryophytes. The bryophytes are also…

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: What is the role of meiosis? In what ways does meiosis give rise to different genetic combinations…

A: What is the role of meiosis?

Q: What are the three events during sexual reproduction that prevent identical children?

A: Sexual reproduction confers an advantage to the offspring; it generates genetic diversity which…

Q: what is Sex Chromosomes and Sex Determination?

A: The chromosomes are the microscopic threadlike structure of the cell that carries the hereditary…

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: How does the progeny formed from asexual reproduction differ from those formed by sexual…

A: Asexual reproduction is the reproductive process that does not involve fusion of male and female…

Q: Sexual reproduction results in offspring that are genetically different from one another and from…

A: Organisms reproduce to form new generations through sexual or asexual reproduction mechanisms.…

Q: In humans, every male gamete contains: A One X and one Y chromosome One X chromosome C Two X…

A: Gametes are the reproductive cells of the organism. They are also called sex cells. Male gametes are…

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: How is the polar body formed in a way that the oocyte retains most of the cytoplasm? And how do…

A: Polar bodies serve to eliminate one portion of the diploid chromosome set delivered by meiotic…

Q: How is it that some chromosomal abnormalities are incompatible with life as early as immediately…

A: Chromosomal abnormalities are one of the reasons of miscarriage and stillbirth and spontaneous…

Q: How do we know whether or not a heteromorphic chromosome such as the Y chromosome plays a crucial…

A: Sex determination is the foundation or establishment of sex through differential advancement in a…

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 the X-Y and Z-W systems of sex determination, which sex is theheterogametic sex, the male or…

A: Ans: Sex determination: It is the biological systems which determines the sexual characteristics in…

Q: Only one gene is present in gamete and not both . explain it?

A: Gametes  Gametes are the male and female reproductive cell produce by male and female reproductive…

Q: In humans, what are the random and non-random events in sexual reproduction (post-meiosis) that…

A: Reproduction is the process in which new offspring are produced from the parent. Sexual reproduction…

Q: What is unusual about the cytoplasm during cell divisions that result in spermatids?

A: Spermatid is the haploid male gametid which results from division of secondary spermatocytes.Each…

Q: How is the genetic determination of sex established in humans?

A: There are 46 chromosomes in the diploid human genome, 44 of which are autosomes and two of which are…

Q: What is the role of the SRY gene on the Y chromosome? a. Production of Mullerian hormone proteins b.…

A:

Q: What gene normally present on the Y chromosome is responsible for a male phenotypic sex?

A: Sex determination in humans is based on the type of chromosomes present in an individual. Humans…

Q: Why must a gamete have only one-half the number of chromosomes found in body cells?

A: Meiosis is a reductional division. It consists of two stages: Meiosis 1 : It is an reductional…

Q: Why does it make sense that the number of chromosomes in a gamete ishalf the number in a somatic…

A: Cell division is a process of a parent cell replicating it chromosomal content and dividing itself…

Q: What is reproductiveisolation?

A: Genetics is the branch of biology that deals with the study of genes, their inheritance patterns,…

Q: Why do mature gametes carry only one set of chromosomes?

A: Gametes are male and female gametes which are haploid .These are germ cells. Ex: sperm cell and egg…

Q: How does the role of meiosis in gamete production differ between organisms with a diploid-dominant…

A: An organic existence cycle (or simply lifestyles cycle or lifecycle) is a sequence of modifications…

Q: What are two distinct chromosomes that provide the basis of sex determination?

A: In a biological system, the development of sexual characteristics in an organism is determined by…

Q: Please list the genetic processes that are crucial for gametogenesis and explain their importance.

A: Gametogenesis is significant because it is the mechanism by which your functional gametes (egg and…

Q: During spermatogenesis, which of the following options describes when cytokinesis would occur?…

A: Meiosis is a process where single germ cell divides twice to produce 4 cells containing half of the…

Q: If nondisjunction of the sex chromosomes takes place in meiosis I in the male, what sexual…

A: Meiosis is a type of cell division in which a diploid cell undergoes reductional division to form…

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: Why is the offspring formed by asexual reproduction referred to as clone?

A: Two forms of reproduction are- 1. Asexual  reproduction- It involves single parent. 2. Sexual…

Q: Which of the phases of XCI occurs in anadult female?

A: X chromosome inactivation is a gene silencing program on one of the X chromosomes in females. This…

Q: During meiosis in male mammals, sex chromosomes segregate to produce two types of sperm: X‑bearing…

A: In mammals sex determination is male heterogametic type in which the male produces two types of…

Q: What is the difference between spermiogenesis and spermiation?

A: The male reproductive gamete or cell is sperm. The sperm cell in animals is motile with a long…

Q: Are there any factors that can cause an increase in the risk of developing an error in the meiotic…

A: Meiosis is a special kind of cell division employed in the production of haploid gametes . The…

Q: Why does it make sense for females to make only one egg cell every time meiosis occurs?

A: Meiosis is the reductional cell division that occurs in the organisms reproductive organs to produce…

Q: Does Y chromosome play a role in sex determination ?

A: A biological system that controls the development of sexual traits in an organism is known as a…

Q: What is the difference between sex determination in mammals and in Drosophila?

A: Sex determination is the process of identification of different sex that is male and female, in…

Q: In humans, gametogenesis in both sexes relies on meiosis. However, spermatogenesis produces four…

A:

Q: What are the Consequences of Inversions during Gamete Formation ?

A: A chromosomal inversion occurs when a portion of a chromosome is flipped end-to-end. When a single…

Q: What process causes the genetic variation seen in offspring produced by sexual reproduction?

A: Sexual reproduction occurs by the fusion of the male and the female gametes. The gametes are haploid…

Q: why is polyspermy lethal in an egg cell?

A: Polyspermy is defined as the introduction of two or more sperm cells into the cytoplasm of an egg.

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.