Opsin proteins detect light in photoreceptor cells of theeye and are required for color vision. The nocturnal owlmonkey, the nocturnal bush baby, and the subterraneanblind mole rat have different mutations in an opsin genethat render it nonfunctional. Explain why all three species can tolerate mutations in this gene that operates inmost other mammals.

Q: ASsume that a fish inherits a mutation in both the eye switch and the coding region of the Pitx1…

A: Hi dear, here's your answer .please like it. Pitx1 quality is communicated in all tissues as Pitx1…

Q: It has been suggested that the present-day triplet genetic codeevolved from a doublet code when…

A: The genetic code is characterized as the structure of nitrogen bases and mRNA particle which…

Q: What phenotypes do you think a homozygous tra1hsn animal with a loss of function Egl-1 mutation…

A: The phenotype is the physical appearance or observable trait of an individual genotype. The…

Q: In the study of plants and animals, it is relatively common forresearchers to identify a gene using…

A: The conventional studies of gene function include the coding sequence of a gene and its regulatory…

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A: Genes are present in DNA which undergoes transcription and translation to make a protein. This is…

Q: The number and complexity of gene families linked with cell adhesion and cell signaling pathways has…

A: Introduction:- A gene is found mostly physical and functional unit of heredity. Gene are made by DNA…

Q: You are studying Hox genes in crane flies (Leptotarsus testaceus). The cranefly genome is sequenced,…

A: To find: Where the homologue of EVE gene is expressed in cranefly embryos

Q: When during the development of most mammals is lactose available for use by E. coli in the gut? How…

A: Each warm blooded creature on the earth is inhabited with Escherichia coli (E. coli) , just as cold…

Q: why do we use chimera for possible organ transplantation? Why not use only pig or monkey as their…

A: Chimera is an organism or tissue that contains at least two different sets of DNA, most often…

Q: You identify a disease of epidermal cells in mice in which Gene A is not expressed. Further analyses…

A: Gene is the segement of DNA which is responsible for producing the protein.

Q: The skin pigment melanin is expressed differently according to exposure to sunlight, with a greater…

A: Phenotype is the expression of the gene and alleles present in an organism's genome. In most cases,…

Q: What other genes besides ARHGAP11B distinguish us from our closest relatives, the chimpanzees and…

A: The DNA (deoxyribonucleic acid) is the hereditary unit of an organism. The genes consist of the DNA…

Q: In humans, what other homeobox genes have spatial expression patterns similar to those of HOXA13?

A: Homeobox A13 or Hox-A-13 is a type of homeobox gene responsible for encoding homeo domain proteins.…

Q: Which statements explain the most likely cause of the difference between the hands of chimpanzees…

A: The hands of gorilla has a significant difference with the hands of chimpanzees. Using the method of…

Q: What do you predict would be the consequence of a mutation in FtsZ that disrupts the function of the…

A: FtsZ is a protein found in the prokaryotes as well as some eukaryotes which are encoded by the ftsZ…

Q: You identify a disease of epidermal cells in mice in which Gene A is not expressed. Further analysis…

A: Gene is the sequence of the genome that codes for a functional protein. The expression of genes from…

Q: The phenotype of a heterozygous mouse (Aa) is agouti.  The agouti banding pattern is due to altered…

A: * Homozygous dominant and Heterozygous will produce agouti that is AA or Aa respectively  and the…

Q: What is different about the C residues in CpG islands compared to C residues in the rest of the…

A: CpG dinucleotides are the short interspersed DNA sequences that are unevenly distributed throughout…

Q: 1. Why is direct flaming preferred when disinfecting loops and needles? 2. Why is it important to…

A: 1.Direct flaming is preferred for disinfecting needles and loops because that completely kills all…

Q: ee modes of dosage compensation exist in nature. riefly, describe the three different strategies.…

A: Males and females of several species have different sex chromosomes and in order to  equalise their…

Q: A snake species that has migrated from the mainland to a small island eats banana slugs instead of…

A: Constitution in the form of DNA of an organism is called its genotype and expressed character or…

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: You are studying a mammalian mitochondrion gene that has the sequence below. What is the amino acid…

A: To determine the amino acid sequence, we need to translate the mRNA sequence derived from the sense…

Q: 5-Azocytidine is an inhibitor of DNA methyltransferase. If thisdrug were fed to female mice during…

A: DNA methyltransferase is an enzyme, which is involved in the transfer of methyl group from the…

Q: How many globin genes are present in mammals? What is the evidence indicating that all the globin…

A: Genetics is a study of genes, heredity, and genetic variation in an organism. Living organisms…

Q: freshwater water fleas (Daphnia) develop without hemoglobin (Hb) and are whitish when living in…

A: With the exception of Leptodora, which can grow up to 18 mm in length, the aquatic organisms in the…

Q: Through GWAS explorations, scientists have identified several SNPs linked to obesity in people who…

A: Fat mass and obesity associated protein (FTO) is otherwise known as alpha-ketoglutarate-dependent…

Q: Morphogens play a key role in development, cre-ating concentration gradients that inform cells of…

A: Introduction Life starts from a single cell called Zygote. A zygote is formed by the fusion of the…

Q: What is Sonic hedgehog, and why it is importan

A: Shh gene in humans code for a protein called sonic hedgehog.

Q: We have spent a lot of time comparing channelrhodopsin (which is found in Chlamydomonas) with…

A: Rhodopsins are photoreceptive proteins with alpha-helices of seven transmembrane and a covalent…

Q: Of all the genes in the human genome, the ones withthe most characterized Alu insertions are those…

A: Introduction  Transposons are the short highly repeated DNA sequence present in heterochromatic…

Q: You discover a lemur with purely black tail (no white rings) and you make the following…

A: A mutation is a change in the genetic material (DNA) of an organism. It can occur spontaneously or…

Q: Suppose you found two classes of mouse mutations, one that affectedlimb development only and one…

A: In human embryos, cilia plays a crucial role in determining the fate of the cell. Stationery and…

Q: How does genetic modification that creates BT corn plants result in pest (eg. corn borer)…

A: Answer: BT CORN = It is the genetically modified corn organism whose DNA has been modified by gene…

Q: The TBX20 transcription factor is important for the developmentof heart tissue. Deletion of the…

A: T-box transcription factor Tbx20 gene in mice is essential for prenatal cardiomyocyte proliferation…

Q: To construct an “interactome” like the one shown inFigure 9-21, scientists identify all of the…

A: Introduction An interactome is the entire set of molecular interactions in a single cell in…

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.