Bicoid is a maternal-effect gene in the fruit fly Drosophila that controls anterior/posterior axis formation. Recessive mutations in bicoid can result in fly larvae that have no head, and thus are embryonic lethal. bcd+ is the wild type bicoid allele bcd is the recessive mutant bicoid allele

Q: X‑linked, recessive diseases, such as hemophilia, are extremely rare in the population. However,…

A: X-linked recessive disorders refers to the conditions where the defective gene that causes the…

Q: One gene that produces multiple effects such as in Marfan syndrome, is called a(n) ___. epistatic…

A: Allele is an alternate form of a gene which may be dominant or recessive for any particular trait.…

Q: In fruit flies, the autosomal recessive mutation pr causes brown eyes whereas the cn mutation causes…

A: A genetic characteristic or disease can be handed down from one parent to the next through autosomal…

Q: Recessive Lethal Mutations in Diploids Can Be Identified by _______ and Maintained in ___________.

A: Lethal alleles are those which cause the death of an organism that carries them. It results from…

Q: The gene for white eye colour is present on the X- chromosome in Drosophila, and is a recessive…

A: The gene for white eye color is present on X-chromosome in Drosophila which suggests that the gene…

Q: You can choose one or more than one option   During an experiment with Drosophila, it was…

A: Introduction: Thomas hunts morgan and his colleagues for the experimental verification of the…

Q: The individuals with a certain disease are shown in this pedigree. The disease is caused by an…

A: By analyzing a pedigree, we can determine genotypes, identify phenotypes, and predict how a trait…

Q: A sex-influenced trait in humans affects the length of the index finger. A short allele is dominant…

A: Index finger shorter than the ring finger is a sex influenced male dominant trait. This trait is…

Q: Hemophilia is an X-linked recessive genetic disorder found in humans. If a male child exhibits…

A: Hemophilia is an uncommon disorder in which the blood does not clot properly due to a deficiency in…

Q: What type of phenotypic effects might you expect from a large chromosome deficiency (deletion) that…

A: Deletion is a type of  Chromosomal  aberration in which there is loss of segment of a  chromosome.In…

Q: Which of the following is true a. A dominant gene is the the one most frequently found in the gene…

A: Generally offsprings receive two copies of each genes from mother and father in which each copy of…

Q: Duchenne muscular dystrophy is a serious condition caused by a recessive allele of a gene on the…

A: X linked disease  Those diseases which are linked to X chromosome of an individual and pass through…

Q: In mice, gene A is epistatic to gene B. Dominant allele "A" allows for pigment to be transported to…

A: Epistasis is the type of gene interaction in which a gene masks or interferes in the expression of…

Q: There are some genes where the phenotype of an individual is dependent on the mother's genotype.…

A: Maternal genes are those genes whose products, RNA or protein, are produced or deposited in the…

Q: The expression of antigen A or antigen B in red blood cells requires the help of an H antigen. A…

A: Given information Antigen A and antigen B in red blood cells need H antigen for expression. A…

Q: Heterozygotes can transmit a recessive allele to their offspring but may not pheotypically carry the…

A: Heterozygote is defined as an individual having two different alleles of a particular gene and thus…

Q: In man, muscular dystrophy is a condition in which the muscles waste away during early life and may…

A: Muscular dystrophy is a disease that involve a progressive loss of muscle mass and consequent loss…

Q: If a gene is located on the X chromosome of a mammal,it isa. expressed only in females.b. expressed…

A: X-linked recessive traits are expressed more likely in males as they have a single copy of X…

Q: Describe the genetics of Huntington's Disease (choose all that are correct): X-linked…

A: Answer -  AUTOSOMAL DOMINANT RARE Huntington's disease is an autosomal dominant disorder.…

Q: Red-green color blindness in humans is due to an X- linked recessive gene. thin

A: Red-green color blindness is the most common variety of color deficiency in humans. It happens to…

Q: Drosophila melanogaster, the common fruit fly, is a model organism due to the similar relationship…

A: Given that, Researchers have discovered a new trait of fruit fly: blue eyes. A cross has made…

Q: In chickens the dominant gene (S) produces a pea-shaped crest and its recessive allele (s) produces…

A: Dominant alleles are those that do not allow the recessive alleles to express when present in a…

Q: Figure illustrates albinism in two different species. Describetwo other genetic disorders found in…

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

Q: In Drosophila, an allele causing vestigial wings is 12.5 mu awayfrom another allele that causes…

A: In genetic mapping, the recombination frequency is considered as a measure of distance between the…

Q: An autosomal trait that is expressed in both males and females but not in the same fashion (for…

A: Autosomal trait that expressed in both male and female in different fashion.

Q: The above image shows a pedigree for a monogenic inherited disease. Although this trait is only…

A: Pedigree analysis is a chart diagram that helps in studying the pattern of inheritance of genes from…

Q: Listen Spontaneous Mutations Can result from an error in the egg or sperm of a parent O Can result…

A: Spontaneous Mutations can result from an error in the egg or the sperm of a parent. Spontaneous…

Q: Hairlessness in dogs is inherent in a single dominant allele. Inheriting two dominant alleles is…

A: Phenotype of an organism is determined by the genotype of an organism. Genotype is determined by the…

Q: Which of the following patterns is typical of an X-linked recessive trait? males and females are…

A: X linked recessive inheritance refers to a genetic condition that is associated with mutation in…

Q: A gene is inherited as a X-linked recessive trait. A hemizgous father that has the recessive allele…

A: Genetic problems related with mutations in genes present on the X chromosome can be referred to as…

Q: In fruit flies, ken– is the mutant allele of a gene and ken+ is the wild-type allele. vg- is the…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: An nonsense mutation in the gene for a human enzyme is most likely to be Dominant Recessive…

A: Nonsense mutations  The change is single nucleotide base which leads to the production of defective…

Q: There's more than one correct answers

A: Deoxy ribonucleic acid (DNA) consists of coded genetic information in the form of genes. These genes…

Q: Listen Spontaneous Mutations Can result from an error in the egg or sperm of a parent Can result…

A: Genes are made of nucleic acids called DNA. The variant forms of genes are called alleles. The…

Q: There are six types of agglutinogen named C,D, E and c,d,e.the first three are dominant and last…

A: In blood typing, antigens on the surfaces of red blood cells (RBCs) are known as agglutinogens.…

Q: A patient has two parents with Huntington's disease. They may not have inherited this autosomal…

A: The Huntington's disease is a very rare condition and is an inherited disease which results in…

Q: Each of the vertebrate Hox genes is present in 4 copies of the genome (TRUE or FALSE)

A: A transcription factor is the protein product of each Hox gene. The homeobox, of which the name…

Q: Red-green color blindness is an X-linked recessive trait in humnans. Consider an affected woman and…

A: Red green color blindness is a recessive X- linked recessive trait in humans. It is given that an…

Q: “carrier

A: X-linked inheritance means that the gene causing the trait or the disorder is located on the X…

Q: Allele-specific gene inactivation by males and females during formation of gametes is called?…

A: Option A is correct because Genomic imprinting is a process of silencing genes through DNA…

Q: In humans, the gene for tongue rolling (R) is dominant to non-rolling (r). A man homozygous for…

A: Since you have asked multiple question, er will solve the first question for you. If you want any…

Q: ILH1 gene is located on chromosome 3 in humans, and four different alleles have been identified. The…

A: Humans are diploid organisms because they have two alleles at each genetic locus, with one allele…

Q: Which of the following traits or diseases is(are) determined bynuclear genes?A. Snail coiling…

A: The disease is a sickness or illness characterized by specific symptoms and signs. There are four…

Q: The gene for red-green colour vision is carried on the > chromosome. If the gene is faulty, colour…

A: Colour blind is x-linked recessive disorder. People suffering from colour blind not able to…

Q: A gene that is located on either sex chromosome | Choose Genes on the X chromosome are called |…

A: Gene is the sequence of nucleotide that and code a particular trait.

Q: This is caused by the presence of certain cytoplasmic determinants from the expression of nuclear…

A: The most common mode of inheritance pattern is through the nuclear genes. The DNA forms the basis of…

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: If a fly is homozygous for the defective, recessive allele of the gene which produces the brilliant…

A: Introduction :-There are different genes located on different chromosomes which codes for eye color…

Respiratory Infections

Respiratory infections are infectious diseases of the respiratory tract that are mostly caused by bacteria and viruses. They cause infections of the throat, sinuses, airway path, and lungs. Respiratory infections are typically divided into two types: upper tract respiratory infection and lower tract respiratory infection.