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…
Why are Barr bodies not found in males?
In 1949, Barr and Bertram first observed a condensed body was called sex chromatin by them and was later referred as Barr body.
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