Why are Barr bodies not found in males?

Q: Explain male strobili?

A: Plants produce spores or seeds for reproduction.

Q: What is the gene in the human chromosome that determines the "maleness"?

A: Gene is the sequence of nucleotides that encode a particular protein. The genes are present in the…

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: What causes impaired spermatogenesis?

A: Answer- Spermatogenesis is the process of the formation of sperms in the testis by the help of…

Q: Why does theheterozygote have an advantage?

A: When an individual contains a dissimilar pair of alleles for the same gene, the condition is…

Q: Explain about the gamete formation ? What are the results of this ?

A: Gamete can be defined as a  sex cell;which contains a haploid number of chromosomes and it has the…

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 entire process of oogenisis?

A: Oogenesis is the formation of a mature female gamete called ovum in the ovary. It is one of the…

Q: How are the external genitalia of the female similar to those of the male? How are they different?

A: The external genitalia of male and female basically originates from the same origin as both of them…

Q: what is Sex Chromosomes and Sex Determination?

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

Q: Why do males even exist? Is there any advantage to keeping males around from a genetic perspective?

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

Q: What are chromosomal basis of sex determination?

A: Chromosomes are the thread-like structures that appear in the cells only during the cell division.…

Q: How do teratogens cause birth defects?

A: Teratogens are those substances or agents that cause harmful mutations or deformations in the genome…

Q: How many sperms will be formed from 64 spermatids?

A: Spermatogenesis is the process of producing sperms from the spermatogonia cells.

Q: What are supporting organs of reproduction in males?

A: Reproduction is the process of formation of an offspring from the parent organism. Reproduction can…

Q: How is polyspermy prevented?

A: Polyspermy is the process by which multiple sperms fertilize a single egg. This happens in only 1%…

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

A: Ans: Gametogenesis: It is the biological process in which haploid or diploid cells divide as well as…

Q: Why are the males whose testes fail to descend to the scrotum considered infertile?

A: Testes are also known as testicles and they are a pair of sperms producing organs which helps in…

Q: Explain sex determination in humans?

A: Sex determination results in the development of individuals with characteristics that allow them to…

Q: What is sex determination?

A: Genes are the structural and functional units of heredity that carry coded genetic information in…

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: Which chromosome determines the sex? Which gene determines the sex?

A: Sex determination system is a biological system which determines the development of sexual…

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: How is sex determined in humans? Which sex determines the sex of the offspring?

A: Sex determination is the determination of sex by examining the sex chromosomes in the individual.…

Q: Draw a labelled diagram of a Graafian follicle?

A: The Graafian follicle is the follicle that is formed after first meiotic division but before…

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: 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 do females have Barr bodies?

A: The sex chromosomes present in the males differ from the sex chromosomes present in the females. The…

Q: .What type of abnormality in the sperm that fertilizes a normal egg will produce an XYY zygote? What…

A: XYY syndrome or Jacob's syndrome  . This condition 47 ( or 46Y) is seen in male .  It is not…

Q: Explain the term homogametic sex?

A: The sex finalization of the sex at the time of the zygote formation is called sex determination. It…

Q: The chromosomal abnormality that causes a man to have asexual to feminine body contours with large…

A: Chromosomal abnormalities are the type of genetic disorders caused due to the change in one or many…

Q: How is sex determined in humans?

A: Genotype is the genetic makeup of an organism. Chromosomes are the large molecules of genes or DNA.…

Q: What is the differencebetween spermatogonium andspermatocyte I?

A: In male reproductive system, a pair of testes are the primary reproductive organs. The chief aim of…

Q: Why might exaggerated secondary sexual characteristics in males demonstrate a superior genotype to…

A: Darwin’s insight was that sexual selection will favor traits that increase mating success, even at…

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: How many x chromosomes are present in a male skin cell during metaphase?

A: Introduction:- In humans, the X chromosome is one of two sex chromosomes (the other is the Y…

Q: c. Why the polar bodies cannot be fertilized by sperms?

A: Hi! Thanks for your question. But as you have posted multiple questions, I am answering only one for…

Q: Explain the Mechanisms of Sex Determination?

A: Every cell has 46 chromosomes Two of the 46 chromosomes, known as X and Y, are called sex…

Q: What is sperm aneuploidy?

A: Aneuploidy is defined as the abnormal chromosome number in contrast to the usual chromosome number…

Q: What is the differencebetween spermatocyte I andspermatocyte II?

A: Introduction  The life starts from single cell called Zygote. A zygote is formed by the fusion of…

Q: What is secondary spermatocytes?

A: Sperm is also called as spermatozoa. It is a male reproductive cells, produced by most animals. In…

Q: What is the difference between primary and secondary sex determination?

A: Sex determination is the act of determining the sex/gender of a person, and this is done by…

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 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 are Alfred's possible sperm with regard to these two traits?

A: Answer :  Alfred's possible sperm in view of heterozygous of polydactyl

Q: During spermatogenesis, is there any difference in outcome between first- and second-division…

A: Non disjunction-It occurs when pairs of homologous Chromosomes or sister chromatids fail to separate…

Q: What causes lower sperm count in males?

A: Sperm is also called as spermatozoon. It is a male reproductive cell or gamete. Animals produce…

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.