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: ess in humans is one example of a recessive X-linked trait. In a family in which there are two…

A: color blindness

Q: What is the difference between a maternal-effect gene and a zygotic gene? Of the following genes…

A: Genes are the basic biological unit of heredity. They are a segment of deoxyribonucleic acid (DNA)…

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: 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: describe the arrangment of Hox genes on each chromosome in mammals in relation to their expression…

A: Hox genes are group of related genes that determine the basic structure and the composition or…

Q: Discuss the role of homeotic genes in development. Explain what happens to the phenotype of a fruit…

A: The homeotic genes are the group of genes that regulate the formation of the anatomical structures…

Q: In dosage compensation, do males sometimes overcompensate or is it always Barr body X-chromosome…

A: Dosage compensation is the process by which the organisms equalizes their genetic expression between…

Q: Genomic imprinting refers to the fact that A. some proteins are made from mRNA transcribed by the…

A: The effects of genomic imprinting on development and health are significant. Numerous imprinted…

Q: Explain how X-linked inheritance differs from inheritance ofautosomal traits.

A: X-linked inheritance There are two possibilities if it inherit in dominant and the recessive.…

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: In humans, hemophilia is an X-linked recessive gene and will only be expressed in females if  they…

A: Hemophilia is a X linked recessive disorder so which is inherited in homozygous condition. In rare…

Q: Part 1. Norrie disease is caused by a recessive mutation on the X chromosome in a gene called…

A: Norrie disease is caused by a recessive mutation on the X chromosome in a gene called norrin. The…

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: 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: Color blindness is a case of.......................... inheritance. a. autosomal dominant c.…

A:

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: Which of the following statements is FALSE about x chromosome inavtivation in mammals? A. It relies…

A: X chromosome inactivation is also knows as lyonisation. It occurs in females.

Q: How is such a linear activation of Hox genes carried out on the cellular level?

A: The Hox gene determines segment identity—whether a segment of the embryo will become a component of…

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: Under what condition might a human male have the XX sex chromosome complement?   It is not possible.…

A: Male develop from Y chromosome because of the presence of SRY genes and SOX9 gene.  These genes are…

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: What is the link between a phosphate functional group, the cellular respiration and the X-linked…

A: A phosphate functional group is a simple phosphorus atom that is bound to four oxygen atoms.…

Q: Give examples of genes that affect development in fruit flies by regulating gene expression at the…

A: Gene is a functional unit of heredity. A gene is a sequence of nucleotides in genome that codes for…

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: An epigenetic study of maternal care in mice was used to study transgenerational epigenetic…

A: Answer.) :- In the given scenario the researchers used mice to study transgenerational epigenetic…

Q: A 14-year-old girl has some abnormalities: her height is lower than that of the girls of the same…

A: Chromosomal disorders are caused due to absence or excess or abnormal arrangement of one or more…

Q: One example of an oncogene is ras. Ras is a G protein that is activated when growth factors bind to…

A: Cell cycle:  It is the sequence of events by which the genome of the cells gets duplicated and the…

Q: Which honeybee in Figure 21.4 (the worker or the queen) will have more copies of 5-methylcytosine in…

A: In honeybees, the nutritional privileges lead to two different developmental forms, the queen and…

Q: Explain why X-linked recessive traits in humans are observed in more males than females.

A: As we know, males are hemizygous for X-connected genes  (they have just a single X chromosome), any…

Q: why the negative control sample (from an unaffected individual) only produced one band.   b.…

A: Huntington's Disease It is a rarer disorder where the brain cells or the neurons starts degenerating…

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: Which findings support the fact that the presence of the Y- chromosome rather than the lack of a…

A: In many animals including humans, sex is determined by sex chromosomes, which are X and Y…

Q: What is x linked genes?

A: DNA and RNA are nucleic acids that are capable of transmitting hereditary information from one…

Q: Chromosomal translocations: Select one: a. Are DNA mutations associated with CML b. Are normal…

A: Translocation could be a shape of chromosomal anomaly that happens when a chromosome parts and a…

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.