How does independent assortment, crossing over and random fertilization contribute to genetic variation in sexually reproducing organisms?

Q: How Do Meiosis and Union of Gametes Produce Genetically Variable Ofspring?

A: Introduction: In meiosis, a single cell undergoes the process of division twice and result in the…

Q: How does the sexual life cycle increase the genetic variation in a species? By allowing…

A: The somatic cells of the body are divided by the Mitosis whereas the germ cells like egg and sperm…

Q: Do genetic differences ever occur in asexually reproducing organisms? If so, how?

A: There are two different modes of reproduction namely, asexual reproduction and sexual reproduction.…

Q: When do females form all their ova (eggs)? At stage of Meiosis I are they halted? Can the life style…

A: The oogenesis is the process by which ova (singular- ovum) are produced in the ovary of female body.…

Q: Describe how nondisjunction in human female gametes can give rise to Klinefelter and Turner syndrome…

A: Gametes are formed by the process of meiosis.

Q: what might be the disadvantage to temperature-dependet sex determination?

A: Sex determination of an organism is the process by which certain factors like genes, temperature or…

Q: How does the sexual life cycle increase the genetic variation in a species?

A:

Q: how Autosomal Genes Contributeto Sexual Dimorphism?

A: A normal human has 23 pairs of chromosomes in which 22 pairs are known as autosomes and one pair is…

Q: What is considered to be the fundamental difference between males and females of most organisms?

A: The males and females of almost all species differ from one another in various characteristics.…

Q: Why is sperm usage biased when femalefruit flies mate twice?

A: Biology is a branch of science that studies about the living organisms. The biology studies about…

Q: What are two processes of sexual reproduction that produce genetic variation?

A: Genetic variation: Genetic variation is known a the variation in the DNA sequence in our genome. It…

Q: What is the proposed evolutionary benefit of sexual reproduction?

A: Sexual reproduction is a type of reproduction in which organism under goes different cycles like…

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: Explain how the independent alignment of homologs, and also crossing-over during the first meiotic…

A: Cell division is the process by which a parent cell divides into two or more daughter cells. There…

Q: what process is important for creating genetic variability among organisms that reproduce primarily…

A: Given: Process that is important for creating genetic variability among organisms that reproduce…

Q: Why does external fertilization lead to an increase of genetic variation?

A: Reproduction is the biological phenomenon by which offspring are produced by individual organisms.…

Q: How do meiosis, fertilization, diploid cells, and haploid cellsinteract in a sexual life cycle?

A: Reproduction is the process by which an organism creates more of its own progeny. Reproduction is…

Q: Why Sexual is the most important type of variation in human?

A: More variety results from sexual than from sexual reproduction. It is a result of mistakes in DNA…

Q: how does the  asexually produced individuals move across the landscape?

A: The process by which a new individual is generated from the parents is known as reproduction. Sexual…

Q: Why are variation possible in progeny of sexually reproduative individuals?

A: Genetic variation refers to differences in DNA sequence found between one individual and another…

Q: Describe how genetic divergence and reproductiveisolation are related to each other.

A: The DNA (deoxyribonucleic acid) is the hereditary unit of an organism. It consists of purines and…

Q: Can you give an example of species in the Philippines that has been documented to perform…

A: A group of organisms which share the genetic heritage and can interbred as a result of which they…

Q: What is sexual dimorphism? How can you say human beings exhibit sexual dimorphism?

A: Sexual dimorphism is the systematic difference in form between individuals of different sex in the…

Q: How does sex determination in the XX-XY system differ from sex determination in the ZZ-ZW system?

A: The determination of sex is done by specific chromosomes  In humans and many other animal species,…

Q: What are the four biological events associated with sexual reproduction that contribute to the…

A: In a eukaryotic organism, sexual production is the necessary advancement in creating genetic…

Q: what is Sex-Linked and Sexually Dimorphic Traitsin Humans?

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: explain how chromosome behaviour during sexual reproduction in animals ensures perpetuation of…

A: Reproduction is the formation of new similar individuals either by asexual or sexual mode. The…

Q: What specific observations (evidence) support the conclusions about sex determination in Drosophila…

A: BASIC INFORMATION SEX DETERMINATION  It is basically the establishment of the gender of an…

Q: Explain why genetic mutations in asexual organisms lead to much more rapid evolutionary change than…

A: Reproduction is the biological process through which new individual organisms are produced from…

Q: By what three mechanisms does sexual reproduction increase genetic variability? How does this…

A: Genetic variation is a measure of the genetic differences that exist within a population. The…

Q: What determines sex in birds, reptiles, humans, ants, and bees?

A: In most of the animals, sex is determined by sex chromosomes.

Q: What are the three ways in which sexual reproduction enhances the degree of genetic variability…

A: Sexual reproduction is a type of reproduction in which organism under goes different cycles like…

Q: Under what circumstances might asexual reproduction be more advantageous than sexual?

A: Reproduction is the process by which an organism produce there offsprings. Actually by the…

Q: How do the chromosomal mechanisms determining sex differ in the three taxa males of bugs, humans,…

A: Mammals belong to the class Mammalia. They are vertebrates. It belongs to the kingdom Animalia and…

Q: How does sex determination in Drosophila differ from sex determination in humans?

A: Sex determination is a method for determining the sexual characteristics within an organism. These…

Q: How do asexually produced individuals move across the landscape?

A: Reproduction can be defined as that process in which a new individual is formed from the parents.…

Q: Is it possible for a hermaphrodite species to present cross-fecundation?

A: A hermaphrodite organism is an organism which has male as well as female sex organs. It can produce…

Q: How do chromosomal, genic, and environmental sex-determining systems differ?

A: Small nucleotide stretches present on DNA molecules that encode information for the synthesis of…

Q: What is crossing over and where does it occur in meiosis? Why is crossing over important for…

A: When a mother cell divides into two or more daughter cells, a parent cell has undergone the process…

Q: Why does the mode of fertilization correlate with thepresence or absence of male parental care?

A: The reproductive system is a combination of sex organs that functions in a synchronized manner in…

Q: Distinguish between the Protenor and Lygaeus modes of sexdetermination ?

A: Genetic information is passed from one generation to another via DNA. Inheritance patterns differ…

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: What are the key differences between autosomal genes and sexual dismorphism?

A: Autosomes:      The chromosomes other than the sex chromosome are considered autosomes. In simple…

Q: What is the role of sex in evolution? Explain

A: Over consecutive generations, evolution is defined as a change in the heritable traits of natural…

Q: How is the geneticdetermination of sexestablished in humans?

A: Sexual reproduction is a type of reproduction in which organism under goes different cycles like…

Sexual Motivation

Sexual motivation refers to a person's overall desire for sexual activity. It is an unusual motivation. Generally, among lower animals, the term 'drive' is commonly referred to as sexual motivation. It means a certain internal force drags the animal to be involved in reproductive behavior. On the contrary, humans are not simply driven by any internal force; rather, the sexual motivation in humans is due to several factors such as biological (hormones, genes), environmental (familial upbringing, chemical exposure) and physiological factors (culture, desire) which further determine engagement in sexual activities.