In domesticated cats, the following are Independently assorting: Normal ears (T) is dominant to tufted ears (t); Curved whiskers (C) is dominant to straight whiskers (c); The presence of six toes (S) is dominant to five toes (s); Gene for hair length is an X-linked codominant. The three phenotypes for hair length are long (XHXH), medium (XHX"), and short (X*X"); medium is the heterozygous condition. Given two parents: TtccSSXHxh x TtCcSsXHY a) How many different gametes could be formed in the female cat with respect to these four traits? b) How many different phenotypes are possible in the offspring from this mating?

Q: Let’s suppose that two different X-linked genes exist in mice,designated with the letters N and L.…

A: The distance between the two genes N and L  can be surveyed by making crosses and by examining the…

Q: In humans, as well as in many other animals and some plants, the sex of the individual is determined…

A: Haemophilia is an inherited bleeding disorder where blood doesn't clot properly. It is caused when…

Q: Red-green colorblindness is determined in humans by a single X-linked locus. Colorblind males are…

A: XBY male has normal vision.XbY male has Red-green color blindness.XBXB females are normal…

Q: At which level is incomplete dominance more likely to beobserved—at the molecular/cellular level or…

A: Incomplete dominance is a phenomenon in which neither of the two alleles is completely dominant in a…

Q: The following X-linked recessive traits are found in fruit flies:vermilion eyes are recessive to red…

A: DNA is the genetic material in most living organisms. It is the information hub of the cell that…

Q: Daniel McDonald and Nancy Peer determined that eyespot (a clear spot in the center of the eye) in…

A: Recombination during gametogenesis refers to separation of linked genes and their migration to…

Q: The Xg cell-surface antigen is coded for by a gene located on the X chromosome. No equivalent gene…

A: The individual with Klinefelter’s syndrome has 47 chromosomes in the diploid cells. The males show…

Q: In a species of bird, feather colour is determined by a single, non-autosomal gene that shows…

A: Given  Feather colour is non autosomal means it is sex based charecter. Parent phenotype  Female -…

Q: Miniature wings (Xm) in Drosophila result from an X-linked allele that is recessive to the allele…

A: Alleles are the alternative forms of a gene. Allele can be dominant or recessive.

Q: Coat color in cats is determined by genes at several different loci. At one locus on the X…

A: An organism has phenotype and genotype. Phenotype is the observable characteristics and genotype is…

Q: A cross between a red-eyed  fruit-fly and a white-eyed  fruit-fly produced an F1with all bar-eyed…

A: Sexual dimorphism is seen in most animals and many plants; in other words, a person may be either…

Q: In humans color vision is X-linked, the gene for color vision is located on the X chromosome but is…

A: Colour blindness is a X linked Recessive disorder in which presence  of gene n on X chromosome is…

Q: .In Drosophila, gray body color is dominant over ebony body color, while long wings are dominant…

A: answer given below Dominant Traits…

Q: In a species of bird, feather colour is determined by a single, non-autosomal gene that shows…

A: Introduction Gregor Mendel focused on patterns of inheritance and the genetic basis for variation.…

Q: Explain why genetic disorders caused by recessive alleles of X-linked genes appear more frequently…

A: In humans and other mammals, biological sex is determined by a pair of sex chromosomes: XY in males…

Q: Imagine that you set up a three-point mapping cross to determine the order of three X-linked genes.…

A: This is the case of three point test cross. The crossing occurs between the heterozygous parent for…

Q: In humans, being right-handed (R) is dominant over being left-handed (r), and normal vision is…

A: Right handed = RR, Rr Left handed = rr Colour blind = XcXc, XcY Normal vision = XX, XY, XcX

Q: Drosophila have XX/XY sex determination systems just like mammals. In Drosophila, loci for both eye…

A: Most creatures and many plants show sexual dimorphism; at the end of the day, an individual can be…

Q: On average, what proportion of X-linked genes in the first individual are the same (inherited from a…

A: The X-Y system of determination of sex is observed in mammals. The sex-liked inheritance contains…

Q: Imagine that you set up a three-point mapping cross to determine the order of three X-linked genes.…

A: This is the case of three point test cross. The crossing over occurs between the heterozygous…

Q: Miniature wings (Xm) in Drosophila result from an X-linked allele that is recessive to the allele…

A: Given: Miniature wings Xm - recessive Long wings X+ - dominant Male parent - long wings Female…

Q: Anhidrotic ectodermal dysplasia is an X-linked recessive disorder in humans characterized by small…

A: The inactivation of the X allele is known to be the major cause of the Anhidrotic ectodermal…

Q: Which of the following is the genotype for a female with a yellow body and red eyes, who is…

A: Alleles are the different forms of a gene. The genotype of two same alleles is called homozygous…

Q: Daniel McDonald and Nancy Peer determined that eyespot (a clear spot in the center of the eye) in…

A: Three individual determined that eyespot in the flour beetles is caused by the X-Iinked alleles (es)…

Q: | BRCA1 is a bi-allelic gene (let's call the two alleles as C and c) that is inherited on an…

A: Epistasis is a phenomenon by which a dominant allele of a gene prevents the expression of alleles of…

Q: Which of the following statements is false?

A: Aneuploidy is the addition or deletion of one or more chromosomes.  Trisomy is the addition of one…

Q: In cat the genes for long whiskers is dominant over that for short whiskers. A homologous long…

A: Given: long whiskers - dominant - LL short whiskers - recessive - ll

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

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

Q: A homozygous gray female is crossed with a yellow male. The F1 are intercrossed to produce the F2.…

A: It is given that a homozygous gray female is crossed with the yellow male. The yellow color due to…

Q: Miniature wings in Drosophila result from an X-linked allele (w) that is recessive to the allele for…

A: The allele for miniature wings is represented with w And the allele for long wings with + The allele…

Q: Refer to the pedigree shown in Question 1. What are some examples of parent-child trios that allow…

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

Q: Anhidrotic ectodermal dysplasia is an X-linked recessive disorder in humans characterized by small…

A: The medical condition Anhidrotic ectodermal dysplasia is caused due to mutation precisely in the…

Q: The following X-linked recessive traits are found in fruit flies:vermilion eyes are recessive to red…

A: The initial step is to decide the request for the three genes.This should be possible by assessing…

Q: Lesch-Nyhan syndrome is caused by a X-linked recessive mutations. Accordingly, Lesch-Nyhan syndrome…

A: Lesch- Nyhan syndrome is caused by the X linked genes. The symptoms includes banging head,…

Q: If the frequency of the "green" form of red-green color blindness (due to an X-linked locus) is 5…

A: X linked inheritance is a type of inheritance in which gene that is responsible for prevalence of…

Q: Drosophila, yellow body color is due to an X-linked gene that is recessive to the gene for gray body…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: . Miniature wings (X") in Drosophila result from an X-linked allele that is recessive to the allele…

A: Given: Miniature wings (Xm) in Drosophila result from an X-linked allele that is recessive to the…

Q: Daniel McDonald and Nancy Peer determined that eyespot (a clear spot in the center of the eye) in…

A: When a cross is carried out between the desired individual and phenotypically recessive individual…

Q: Predict the probability (using a Punnett square) of producing an offspring affected by a single gene…

A: Inheritance is the process of transmitting the traits from parent to offspring. Traits of an…

Q: Bicoid is a maternal-effect gene in the fruit fly Drosophila. Recessive mutations in bicoid can…

A: A substance that specifies different fate to the cells due to the difference in their concentration…

Q: In a cross between Aa Bb XCDXCD and Aa Bb XCDY, the A gene controls earwax- where wet earwax is…

A: A= earwax  B- tasting ability C- color vision D= dystrophin enzyme

Q: In humans, as well as in many other animals and some plants, the sex of the individual is determined…

A: Haemophilia is X-linked recessive disorder. It is generally caused by a mutation in the genes which…

Q: Mutant female: yellow body and purple eyes.  Male: Normal Use:…

A: Mutant female: yellow body and purple eyes.  Male: Normal 1. Which mutant alleles are dominant?…

Q: In Drosophila, gray body color is dominant to ebony body color, while long wings are dominant to…

A: Genotype is defined as the complete set of genes present in the individual and the information of…

Q: In Drosophila, the genes for withered wings (whd), smooth abdomen (sm) and speck body (sp) are…

A: To calculate the expected number of double crossover, we have to use the product rule. The product…

Q: A reciprocal cross is useful when determining which of the following? If a trait is sex-limited…

A: Reciprocal cross It is a concept of crossing F1 hybrids with one of the parents. When F1 is cross…

Q: In rabbits, the gene for fur color is multiallelic. Agouti (C) is dominant to chinchilla (Cch),…

A: Term Phenotype refers to the observable characteristics or physical properties which can be observed…

Q: n Drosophila, singed bristles (sn) and cut wings (ct) are both caused by recessive, X-linked…

A: Mapping deals with sequence, in which genes appear on a chromosome and their distance apart. Mapping…

Q: In Drosophila melanogaster, a yellow-bodied (dark coloured) male with vestigial (underformed) wings…

A: Drosophila malenogaster is a fruit fly from family drosophilidae.

Q: The following X-linked recessive traits are found in fruit flies:vermilion eyes are recessive to red…

A: To calculate The map distance separating two genes

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.