How does X inactivation contribute to a person’s phenotype? a. It controls the number and kind of genes inherited on an X chromosome. b. It determines which X chromosome is expressed in a male. c. It allows for the expression of either the maternal or the paternal X in different cells. d. It enhances the expression of Y-linked genes in males.

Q: If a woman is a carrier of a certain x linked disease and one of her X chromosomes is turned off in…

A: As according to the above question; women is a carrier of Certain X linked disease.for example ;…

Q: Explain how X-inactivation in female mammals results inpatchy coat color in calico cats.

A: Two sex chromosomes, identified as the X and Y chromosomes, decide the sex of animals. Genes are…

Q: Describe the process of X-chromosome inactivation in mammals

A: X-chromosome inactivation, also known as lyonization, is a process by which one of the copies of the…

Q: When skin cells on a female fighter's arm divide to heal a wound she got during a fight in an arena,…

A: The process of determining which X-chromosome is inactivated in the daughter cells is a random…

Q: What degree of differences would you expect to see in the DNA base sequences and epigenetic marks of…

A: Monozygotic twins are born due to splitting of one single fertilized egg into two embryos. They are…

Q: You are interested in the expression of regions of the X chromosome at different times in human…

A: The investigation of the X chromosome at different phases of human fetal development is a complex…

Q: From the list of answers below (A-D) select the correct answer(s). There may be more than one…

A: Need to find which of the statement is right from the following.

Q: Why are multiple copies of the X chromosome tolerated?

A: In females, two X are present whereas in males only one X is present. To balance the expression of…

Q: Why does X inactivation occur in female mammals?

A: Causes of X inactivation: X-chromosome inactivation usually define through the term that they are…

Q: hich of the following correctly explains how gene expression can change in a differentiating cell in…

A: An embryo is the very first stage of a multicellular organism's development.

Q: It is estimated that in about 1/150,000 births, an individual is born with 46 chromosomes, both an X…

A: Introduction: Any form of change that occurs in the DNA sequence is referred to as a mutation. A…

Q: 48. Which of the following is the correct mechanism of equalizing X-encoded gene products in humans?…

A: As per our policy we are answering the first question only.  For the rest of the question kindly…

Q: Describe X-inactivation process in humans.

A: In humans, the sex determination is  by the XX-XY method. Males are heterogametic as they contain…

Q: In marsupials like the opposum or kangaroo, X inactivation selectively inactivates the paternal X…

A: Since we only answer up to 3 sub-parts, we’ll answer the first three. Please resubmit the question…

Q: Which of the following is not a characteristic of X-linked recessive traits in humans?   a.…

A: X linked recessive is a condition caused due to recessive mutant genes located in X chromosomes. In…

Q: Discuss the genetic determination of sex and the inheritance of X-linked genes in mammals.

A: Humans have 23 pairs of chromosomes in their body, among which 22 pairs are the somatic chromosomes,…

Q: What is the spreading phase of X-chromosome inactivation? Whydo you think it is called a spreading…

A: Heterochromatization of one X chromosome begins in the late blastocyst stage of the embryonic life.…

Q: Explain about inactivated X chromosome in female mammalian cells ?

A: The sex of the offspring is generally genetically determined by the genes present on the sex…

Q: Predict the potential effect of the Lyon hypothesis on the retina of a human female heterozygous for…

A: LYON'S HYPOTHESIS -- The hypothesis , named after Mary Lyon  stated  it , suggesting  that doseage…

Q: In an embryo from a homozygous Bicoid mutant female,which class(es) of gene expression is (are)…

A: The embryo is an early stage of the development of a multicellular organism. Embryonic development…

Q: Fruit fly segmentation begins during oogenesis and is affected by which maternal genes? (Note…

A: Introduction A gene is the basic unit of heredity, physical and functional. Gens consist of DNA.…

Q: Which of the following statements is incorrect? a. Some gene expression patterns can be passed to an…

A: The epigenetic regulation of gene expression is considered a very common process. This plays a major…

Q: Explain how X-chromosome inactivation may affect thephenotype of female mammals

A: The inactivation center called XCI is responsible for the inactivation of X-chromosomes. This center…

Q: Categorize each of the following events as an example of genetic inheritance or epigenetic…

A: * genetic inheritance Inheritance is the process in which genetic information is passed on from…

Q: The inheritance in short wings in Drosophila fruit flies is an x-linked trait, recessive. Which…

A: X-linked recessive inheritance is caused when a mutation occurs in the X-chromosome therefore a male…

Q: Fragile X is a disorder which causes mental impairment in affected individuals. The trait which is…

A: The trait in question is X linked recessive trait. This means that the trait in question is a sex…

Q: How can human females and males function normally, despite carrying different umbers of the X…

A: Each persons normally has one pair of sex chromosomes in each cell. Females express two X chrmosome…

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: For XCI to occur, where are the Xist and Tsix genes expressed?a. Xist is expressed only on Xa, and…

A: The inactivation of the X chromosome leads to the formation of a Barr body. It ensures the dosage…

Q: When BRCA1 is absent, is it unable to transcribe genes like p21, which leads to senescence ?

A: Introduction Senescence is defined as the stage when the cell stops dividing permanently but does…

Q: Which of the following statements is FALSE? Inactivation of one of the two X chromosomes in the…

A: They were discovered in 1876. These are the tertiary structures of DNA formed as a result of complex…

Q: Describe how X-linked traits are inherited and explain how X-linked inheritance is different from…

A: Inheritance is the process by which the genetic information is passed on from the parent to child.

Q: For the Igf2 gene, where do de novo methylation and maintenancemethylation occur?a. De novo…

A: Igf2 gene in mammals is responsible for imprinting of genes where the offspring is allowed to…

Q: In fruit flies, eye color is an X-linked trait.  Red eyes (XB) are dominant to maroon eyes (Xb). A…

A: An alternate form of a gene is called alleles.  The dominant allele is represented by a capital…

Q: A key event that initially determines female or male development in Drosophila is the a.…

A: DEVELOPMENT IN DROSOPHILA:- The life cycle of Drosophila has a number of stages:- 1)Embryogenesis…

Q: Occasionally, a mouse X chromosome is broken into two pieces and each piece becomes attached to a…

A: The X chromosome is one of the two sex chromosomes in mammals, along with the Y chromosome. The X…

Q: Cat breeders are aware that kittens expressing the X-linked calico coat pattern and tortoiseshell…

A: Gene is the unit of heredity that is transferable from the parent to the offsprings. The function of…

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.