Given your answers to below problem, is it possible to distinguishbetween the Protenor and Lygaeus mode of sex determinationbased on the outcome of these crosses? Probelm An insect species is discovered in which the heterogametic sex isunknown. An X-linked recessive mutation for reduced wing (rw)is discovered. Contrast the F1 and F2 generations from a crossbetween a female with reduced wings and a male with normalsizedwings when(a) the female is the heterogametic sex.(b) the male is the heterogametic sex.

Q: In female mamals, X chromosome inactivation often leads to phenotypic mosaicism. Assume that black…

A: Coat color in animals is controlled by either autosomal or sex-linked genes. Coat color is a…

Q: BLACK VESTIGIAL DIHYBRID TESTCROSS In the parental generation, you mate a pure-breeding wild-type…

A: If the genes are located on the same chromosome then they are classified as linked genes. In this…

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

A: The eye is the most important sensory organ in the organism. It is mainly responsible for vision. In…

Q: Let’s suppose that a gene affecting pigmentation is found on the Xchromosome (in mammals or insects)…

A: Introduction  The total chromosomes in the body are divided into two groups: Autosomes…

Q: In Drosophila, M. Green found a singed allele (sn) withsome unusual characteristics. Females…

A: Each gene in the DNA that is coding for a specific protein/trait has two variants called alleles.…

Q: THEME 2: The figure below shows the types and numbers of gametes produced by a trihybrid. Phenotype…

A: Genotypes are the genetic characteristics of a person or an organism in relation to a specific gene…

Q: What are the expected phenotypic ratios in the F, generation? If one of the F, males is mated to an…

A: The cross is between red bar-eyed female and purple normal eyed male. The genotype of the female is…

Q: In ZZ-ZW sex determining systems which of the following is true? O Insects such as bees, wasps, and…

A: Sexually reproducing organisms show two types of sexual characteristics. They are responsible for…

Q: age Individuals who carry stable pericentric inversions are typically phenotypically normal, but…

A: A pericentric inversion is a kind of chromosomal rearrangement in which a portion of a chromosome is…

Q: 3. Flip the coins 100 times and record your results in the chart below. Class results Your results…

A: 1- Here each person has one coin. And each coin can be considered as parent with the genotype Aa of…

Q: The pedigree below shows a pedigree for a completely penetrant X-linked trait caused by a recessive…

A: The Pedigree shows X linked recessive trait. In this type of inheritance pattern the mutation lies…

Q: Termshave a haplo-diploid sex determination system where females develop from a fertilized egg (they…

A: ANSWER;- A). The probability that a daughter will inherit a recessive allele from her mother is…

Q: What are the haploid genotypes of the gametes and frequencies/proportions of those gametes that can…

A: Meiosis cell division is the process of generation of two daughter cells that are genetically…

Q: A gene involved with body colour in this species of fruit fly is located on the non-homologous…

A: The Gene for Eye Color in Drosophila: Red vs. BrownIntroductionThis species of fruit fly possesses a…

Q: Table 8.1 shows that Turner syndrome occurs when an individual inherits one X chromosome but lacks a…

A: Chromosomal deletion syndrome occurs when whole or part of chromosomes are missing. Turner Syndrome…

Q: Two haploid yeast strains are crossed together, one wild type, the other mutant for 2 linked genes.…

A: * Yeast cells can also undergo meiosis and will divide into four cells called gametes which are same…

Q: THEME 3: In Drosophila recessive mutants called a, b, c, and d all have the same phenotype; namely,…

A: Wild type individuals result when the Plus sign is indicated and this Plus sign occurs when the two…

Q: hanges in Chromosome Structure and Number The Poinsettia type of Datura is trisomic for the…

A: Genetics is the study of how traits are passed down from generation to generation. Chromosomes are…

Q: Draw a Punnett square for the dihybrid cross. There are two known alleles of gene occupying a…

A: Dihybrid cross involves two genes in a cross. That's why the two traits are involved in this cross.

Q: In jellyfish, let's say that long tentacles are produced by a sex-influenced allele that is dominant…

A: Given information In jellyfish, long tentacles are produced by a sex-influenced allele. The allele…

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: eye trait. Assume that the flies have a diploid set of autosomes (2A). Allele X" codes for white…

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

Q: In Neurospora, his2 mutants require the amino acidhistidine for growth, and lys4 mutants require…

A: Neurospora is a type of a fungus that has axon like striations on its spores. The spores of the…

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: DRAW IT Suppose, as in the questionat the bottom of Figure 15.9, the parental(P generation) flies…

A: Consider the following V= Normal wing v= Vestigial wing G= Gray body-color g= Black body-color Then,…

Q: Brown Enamel of the teeth is a well-known sex-linked dominant trait. Showing ALL work using punnett…

A: Male is more vulnerable to sex linked disease than female. Male needs one gene to be diseased while…

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: Please answer question (a) (b) and (e)

A: Crossing over increases variations.

Q: Which of the following statements is true regarding the phenotypic effects of inversions? Select ALL…

A: Inversion  Inversion is a kind of mutation in the chromosomes where part of a chromosomes is cured…

Q: Test that Mode of Inheritance is Sex Linked Recessive for experiments at each of two research…

A: If the mode of inheritance is sex linked recessive as in the above question then female carrying the…

Q: (This one is more complicated). Two true breeding fruit flies are allowed to mate. One fly is…

A: The body color phenotypes in the flies are black and gray. The eye color phenotypes in the flies are…

Q: Vestigial wing is a recessive autosomal mutation in the fruit fly Drosophila melanogaster. Wild-type…

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

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: None

A: Genotype and Phenotype of Parents:Male (osk-/osk-): This male has two mutant alleles of the oskar…

Q: You have spent two decades studying a muscular dystrophy disorder. All previous pedigree data…

A: X linked disease is a type of sex linked disease in which the mutation is present in X chromosome.…

Q: Sex determination in birds is different from that in humans. The sex chromosomes in birds are called…

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

Q: What possible conclusions can be drawn from the observations that in male Drosophila, no crossing…

A: The structural components are also termed synaptonemal complexes. During the zygonema stage of…

Q: In humans, the mic2 gene (involved in antibody production) is found on sex chromosomes and has…

A: The pseudoautosomal inheritance is observed for the allele in the identical regions of X and Y…

Q: Given two strains of autotetraploid plants  AAaa – in this plant the gene is close to the…

A: For AAaa gametes in F2 generation would be Aa and Aa . Genotypic ratio - 1:2:1 phenotypic ratio- 3:1…

Q: Duchenne muscular dystrophy is a recessive disorder caused by a rare,loss-of-function allele that is…

A: Duchenne muscular dystrophy (DMD) is a quickly progressive type of muscular dystrophy that happens…

Q: You are an allele on a single uncondensed chromosome in a Yellowfever-carrying mosquito (Aedes…

A: The fundamental and active process by which a parent cell after replication of its components,…

Q: In C. elegans, lon-2 and unc-2 are recessive mutations that are 8 map units apart on the X…

A: A map unit is defined as the distance between two linked gene pairs where 1% of the products of…

Q: Explain the rationale behind a testcross. Is it necessary for one ofthe parents to be homozygous…

A: Genetics is the study of inheritance of characters which is the heredity and the variation of the…

Q: In Drosophila, the autosomal recessive brown eye color mutation displays interactions with the…

A: One must first ascertain the genotypes of the parents who are true breeders in order to address this…

Q: If you fertilize an adult female which is mosaic gonads (y w sn3 and mhw e gametes) with an adult…

A: Genes are divided into alleles, which are various variations of the same gene. Every gene in somatic…

Q: I. In an exotic Peruvian plant, burgundy flowers (B) are dominant to pink flowers (b), green stalks…

A: A genotype's probability is the likelihood that a person would inherit a given mix of alleles…

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.