Maleness and Male Fertility Are the OnlyKnown Y-Linked Traits in Humans Explain?

Q: What are twins?Genetically what are the twotypes of twins that can begenerated?

A: Pregnancy is also termed as gestation during which one or more offspring develop in the uterus of a…

Q: Generally, sex chromosomes in male mammals are XY and females are XX. Following meiosis and gamete…

A: Meiosis is called the reduction division which divides the diploid germ cell into four haploid…

Q: enolteoup waive Why do X-linked genetic disorders occur more frequently in males? 7. In the space…

A: X-linked traits denote that the trait or genetic condition is caused by a gene found on the…

Q: What sex ratio would you expect among the offspring of a cross between a normal mape mouse and a…

A: Sex ratio is defined as the ratio of males and females in the population. Generally in sexually…

Q: Explain how, by genetic drift, a certain version of the human Y chromosome might become extinct.

A: Y chromosome is the male determining factor in humans. A normal human has 22 pairs of autosomes and…

Q: Why are the linked genes similar to sex-linked genes? Also how are they different?

A: Defination-  Linked genes- These are present close together on the same chromosome. Sex-linked…

Q: Red–green color blindness in humans is due to an X-linked recessive gene. A woman whose father is…

A: Red-green color blindness is an inherited X-linked recessive pattern. If a female has 1 copy of…

Q: What is an example of a sex-linked trait in humans?

A: Sex-linked trait refers to a trait whose expression depends on a gene present on a sex chromosome.…

Q: Phenylketonuria (PKU) is a disease that results from a recessive gene. Suppose that two unaffected…

A: Genetic disease is caused due to mutation in the gene that may result in malfunction of the gene…

Q: MULTIPLE CHOICE In mice, agouti fur color is dominant over albino fur. What is the geno- type of a…

A:

Q: A smooth (gracile) skull of a female appears quite different from the bumpy (robust) appearance of…

A: Bigger or larger muscles are found in male skull because of the presence of frontal brow, eye orbit,…

Q: Sex-Linkage The X and Y chromosomes are not exactly identical, and we should expect that there would…

A: X-linked dominant inheritance refers to genetic conditions caused by mutations in X-chromosome…

Q: The Amami spiny rat (Tokudaia osimensis) lacks a Y chromosome, yet scientists at Hokkaido University…

A: Reproduction: Important biological process by which new offspring are reproduced by their parents is…

Q: Why do tortoiseshell coats occur primarily in female cats? O Testosterone suppresses the…

A: Tortoiseshell is a cat coat color that is named for the tortoiseshell material it resembles.…

Q: how meiosis and fertilization can result in a trait not expressed in both parents being expressed in…

A: .The process of fusion of male and female gametes in the form of sperms and egg respectively is…

Q: Determine the justification for variation in the phenotypic expression of MERRF in identical twins.

A: Myoclonus Epilepsy with Ragged-Red Fibers Syndrome, often known as MERRF, affects the neurological…

Q: A family has an X-linked dominant form of congenital generalizedhypertrichosis (excessive…

A: Genes are the functional unit of DNA. It contains information that is transferred from one…

Q: . Researchers discovered recently that the sole functionof the SRY protein is to activate an…

A: There are various genetic disorders that develop due to anomalies in sex chromosomes. They normally…

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: males, are encoded by different alleles of the same X-linked fur color gene. Based on the phenotypes…

A: As we know that in XY -chromosomal system of sex determination , both X and Y chromosomes are sex…

Q: X inactivation explains the large color patches in calico cat fur and the smaller patches in…

A: The calico and tortoiseshell cats are named for their cat coloring.  The cat genes are usually…

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: 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: 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: An attached-X female fly, XX ¬Y (see the “Insights and Solutions” box), expresses the recessive…

A: Inheritance or heredity is passing-on one trait from the parents to the progeny by either asexual or…

Q: Q.why are there so few Y-linked traits in humans?

A: Y-linkage is also known as holandric inheritance. It describes the traits produced by the genes…

Q: What is the difference between X-linked dominant and X-linked recessive traits?

A: The sex chromosomes are present in pairs in the humans and several other organisms. These…

Q: Why is it that so many of the sex-linked traits we talk about in humans are carried on X chromosomes…

A: Traits can be dominant, recessive, sex linked recessive or sex linked dominant. Dominance is the…

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: Why aren't Turners females who have one X chromosome phenotypically normal given that males only…

A: Turner syndrome is a genetic disorder which occurs in female due to chromosomal abnormality.…

Q: To determine whether radiation associated with the atomic bombings of Hiroshima and Nagasaki…

A: Mutations are changes that occur in the deoxyribonucleic acid (DNA) sequence, either due to mistakes…

Q: In humans, why is it that the mother determines whether her sons will get recessive sex-linked…

A: Human X and Y chromosomes determine the biological sex of a person. XX specifies female and XY…

Q: Nine-banded armadillos almost always give birth to four offspringthat are genetically identical…

A: Genetics is the branch of biology that deals with the study of genes, their inheritance patterns,…

Q: Are multiple alleles, lethal alleles, and epistasis common or rare in humans? Why?

A: Multiple alleles refer to the different alleles of a single gene. It can be one or more than one.…

Q: sex determenination.

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

Q: Ch. 14-7 Expression of the SRY gene on the Y chromosome gives rise to the male phenotype in humans.…

A: Y-linked inheritance pattern is the inheritance of genes on the Y chromosome. Only males have Y…

Q: Why are there so few Y-linked traits in humans?

A: The study of genetic variations, heredity, and genes is called genetics.

Q: why is it that a genotype of XXX may not cause any problems for human female?

A: Sex-determination is a biological system that determines the sex of an offspring based on different…

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: 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…

Q: Some individuals grow ear hair later in life, the gene for this trait is beleived to be carried on…

A: The phenotypic expression is the ultimate product of a gene. All of our phenotypic characteristics…

Q: Genetic maternal effect is often seen in mammals. For example, research shows that the maternal…

A: In genetics, a maternal effect occurs when a mother's genotype is expressed in the phenotype of her…

Q: How do we know that Drosophila utilizes a different sexdetermination mechanism than mammals, even…

A: A chromosome is a compact form of DNA  molecule present in dividing cells. In metabolically active…

Q: XX individuals can be sex-reversed males if one of their X chromosomes contains a translocated…

A: In a normal female, there are two X chromosomes and their karyotype is (46, XX). However, in some…

Q: Inheritance of a single gene: 7. A tortoiseshell cat mates with an orange cat: What is the…

A: Heredity, also called inheritance or biological inheritance can be described as a phenomenon of…

Q: Y-linked Inheritance. Holandric genes are inherited by males only. Assuming that a man with…

A: If the modified gene that causes the illness is found on the Y chromosome, one of the two sex…

Q: Can the Lyon hypothesis be tested in a human female who is homozygousfor one allele of the X-linked…

A: Lyon hypothesis: The concept that a gene dosage imbalance between males and females is compensated…

Q: Why does the sex chromosome X carry the gene for eye color in Drosophila?

A: The mode of inheritance is a pattern of obtaining parentral alleles  or genes to the offsprings. The…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.