Explain how the mouse and the fruit fly differ in the chromosomal control of sex determination.

Q: Provide four sources of error that can cause mistakes during meiosis

A: Meiosis : It's the reductional division in which a diploid cell divides to form four haploid…

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: Contrast the XX/XY and XX/X0 modes of sex determination.

A: A sex-determination system is a biological system that determines the development of sexual…

Q: Name the chromosomes which donot take part in sex determination.

A: Chromosomes are rod-shaped condensed chromatin fibers that act as hereditary vehicles as they store…

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: If the 2n chromosome number of an organism is 12: (a) what is the probability of having a spermatid…

A: Probability is equal to number of outcomes divided by total possible outcomes. Diploid number of…

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: Explain briefly what is a sex link

A: Genes are the sequence of nucleotides present on the DNA which encodes a particular phenotype.

Q: Outline the processes of male gamete formation and female gamete formation in plants.

A: Plants are mainly multicellular plants that have ability to perform photosynthesis and belong to…

Q: Explain the process of X-Chromosome Inactivation in Mammalian Females.

A: Mammals are the vertebrate having mammary glands as one of their main characteristics which…

Q: what is the chromosomal system for determining sex in mammals?

A: Chromosomal determination of sex It is also known as allosomic determination of sex and is based on…

Q: Describe the cascade of RNA splicing events initiatedby the Sxl protein that results in female…

A: In drosophila, the pre-mRNA undergoes sex-specific splicing to control sex determination. The…

Q: Explain how and why the queen honey bee abort the sexual maturation of the worker bees?

A: Queen bees have a specialised reproductive system , which lets them make some choices on the types…

Q: Explain how and why the Queen bee abort the sexual maturation of the worker bees?

A: * Honey bee Colony consists of three types of Bees  A single queen Hundreds of male drones…

Q: What is a simple and convenient method for tracking the kinds of gametes produced as well as all the…

A: The gametes are referred to as the reproductive cells of an organism. The female gametes are called…

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: What pathway is Fog2 gene product a part of and how does it affect sex determination?

A: Gata4 together with the cofactors Nr5a1 (Sf-1) and Fog 2 (Friend of Gata, 2; also known as Zfpm 2 )…

Q: In mice, the Sry gene is located on the Y chromosome very close to one of the pseudoautosomal…

A: The chromosomes are the genetic material present in the nucleus of the cell which is a condensed…

Q: Explain the chromosomal and genetic control of sex determination in mammals. Clearly establish the…

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

Q: Identify two organisms that appear similar but have two different mechanisms of sex determination.…

A: Animals with two distinctive sex chromosomes are of heterogametic sex, and they are subsequently…

Q: Describe one function, brought about by the process of meisos, that spermatogenisis and oogenisis…

A: Common function between spermatogenesis, oogenesis and meiosis :-

Q: In certain salamanders, the sex of a genetic female can be altered, changing her into a functional…

A: Salamanders are vertebrates and they belong to class amphibia. Salamanders can survive on both lands…

Q: what causes activation of certain genes before fertilization?

A: Fertilization is the process of fusion of male and female gametes for the formation of a zygotes.

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: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…

A: In Drosophila, sex determination is achieved by a balance of female determinants on the X chromosome…

Q: Describe the technique which is used for sex determination in foetus?

A: Sex determination system is used to determine the sexual characteristics of a developing fetus. By…

Q: Is Barr's Corpuscle a Reliable Tool for Sex Determination?

A: Canine morphology is used for the determining the sex. However aside from this technique, X and Y…

Q: Define cross-fertilization

A: Fertilization is the fusion of gametes to give rise to a new individual organism or offspring and…

Q: Do the Cross between:       GgTt x Ggtt Determine the gametes produced by each Get the PR and GR

A: A mating experiment between two species that are identically hybrid for two traits is referred to as…

Q: Outline the molecular mechanism of sex determination in Drosophila and mammals.

A: Sex determination refers to determining the sex of an individual. The sex of an organism is…

Q: sex determenination.

A: In humans males are heterogametic and females are homogametic. heterogametic means production of…

Q: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…

A: Sex determination in Drosophila is achieved by the balance of female determinants on the X…

Q: The gene can sometimes move to another chromosome, resulting in the development of XX males or XY…

A: Sex determination is defined as the biological process that determines what the sex of an individual…

Q: Explain the term heterogametic sex?

A: Chromosomes are the unit of inheritance. They carry genetic information from one generation to…

Q: Explain the inactivation of the X chromosome or Lyonization.

A: A classic example of X inactivation is seen in calico cats. As a result tortoiseshell coat pattern…

Q: What will be the effect on sexual development in newly fertilized Drosophila embryos if the…

A: In Drosophila, sex determination is achieved by a balance of female determinants on the X chromosome…

Q: Give one possible function of the observed phenomenor

A: In the diagram, the organism is a sea-cucumber.

Q: Determines Sex in Drosophila?

A: Drosophila melanogaster is a common fruit fly. It is most common subject used in majority of genetic…

Q: In certain salamanders, the sex of a genetic female can be altered, changing her into a functional…

A: Salamander is an amphibious organism belongs to the order Urodela. Mostly they live in river streams…

Q: How does the heterogametic sex differ from the homogametic sex? a. The heterogametic sex is male;…

A: Sex determination is possible in organisms only by the presence of certain differentiating…

Q: Explain and elaborate how and why the queen honey bee abort the sexual maturation of the worker…

A: Honey bees have two types of female bees. One is called the worker while the other is called the…

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: True or False: Follicle cells on the dorsal side of the Drosophila embryo produce the Backless…

A: The follicles, which are hollow balls of cells containing immature eggs, are present in the ovaries…

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: 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: Describe the major difference between sex determination in Drosophila and in humans.

A: Drosophila melanogaster refers to the fruit fly which is widely used in genetic research as it has…

Q: The picture below represents a G1 cell from a newly discovered species that uses the X/Y sex…

A: A diploid cell contains two sets of all the chromosomes.