2). In bullhead catfishes, the nuclear DNA locus R is aspecies marker (does not determine species! but isassociated with it), the genotype RR indicates the Blackbullhead species, while the genotype rr indicates Brownbullhead species. Mitochondrial species markers(mtDNA) are also known for bullheads, allele 1 (e.g.,haplotype 1) indicates Black bullhead and allele 2 (e.g.,haplotype 2) indicates a Brown bullhead. A female catfishwith the genotype Rrand mtDNA haplotype 1 is caughtin the Sacramento River, a known hybrid zone, andcrossed with a male Brown bullhead in the Universityfreshwater aquarium. Assume maternal inheritance inmtDNA in fish, just like humans. What are the genotypicratios and haplotypes of the progeny from this cross?

In this cross, we are considering a female catfish with the genotype Rr (nuclear DNA) and mtDNA…

Answered: 2). In bullhead catfishes, the nuclear…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Similar questions

Through the Human Genome Project (HGP), a relatively accuratehuman genome sequence was published from combined samplesfrom multiple individuals. It serves as a reference for a haploidgenome. How do results from personal genome projects (PGP)differ from those of the HGP?
Please help.
Sex-specific imprinting distinguishes male and female genomes and is inherited in a parent-of-origin-specific manner. Such imprints are established in the germline during gametogenesis and remain intact throughout embryonic and postnatal development. Access the Imprinted Gene Catalogue website https://www.geneimprint.com/Links to an external site.. Click on “Search by Species Name” and then click on “Human.” Find 4 disorders that involve imprinting: 2 transmitted from the mother and 2 from the father, and use OMIM to describe the phenotypes (you may include images of phenotypes) and explain their underlying cause(s). Paternal Imprint Maternal Imprint 1 2 Include reference
The use of nucleotide sequence data to measure genetic variabilityis complicated by the fact that the genes of many eukaryotesare complex in organization and contain 5' and 3' flankingregions as well as introns. Researchers have compared thenucleotide sequence of two cloned alleles of the y-globin gene from asingle individual and found a variation of 1 percent. Those differencesinclude 13 substitutions of one nucleotide for anotherand three short DNA segments that have been inserted in oneallele or deleted in the other. None of the changes takes placein the gene’s exons (coding regions). Why do you think this isso, and should it change our concept of genetic variation?
Please answer. Try your best :)
A scientist investigating the genome of two related individuals observes a difference of a few nucleotides in one individual compared to the other. The nucleotide differences are in a region of noncoding DNA on chromosome 1. Would these differences be considered a mutation? Why or why not? Yes, the difference in nucleotide sequences between the individuals is a mutation because it will affect the phenotype of the two individuals. Yes, any heritable variation in the nucleotide sequence is considered a mutation, even if that variation is in a noncoding region of DNA. Not enough information was provided to determine if this nucleotide difference is a mutation because the effect on phenotype is unknown. No, the change in nucleotide sequence doesn't appear in a coding region of the DNA and so can't be a mutation.
The genome of Daphnia pulex, a small freshwater crustacean, includesapproximately 30,000 genes in ∼200,000 kb of DNA. How does the genome compare to that of Drosophila melanogaster, another arthropod, and to that of humans?
When comparing evolutionary similarities between different genes within a gene family, it is usually more straightforward to compare genes by using the protein sequences of gene products rather than DNA sequences of the genes themselves. Explain why this is the case. (Include 4 succinct points at least)
The following two sequences represent the same gene from two different species: Assume that all changes in the third position are synonymous and all in the first and second positions are nonsynonymous. a) How many synonymous sites (positions) are there in the gene? b) How many nonsynonymous sites (positions) are there in the gene? c) How many synonymous substitutions are there between species? d) How many nonsynonymous substitutions are there between species? e) What is the dN/dS ratio? f) What does the dN/dS ratio tell you about the evolution of this sequence? Finally, It has been hypothesized that population size affects genome size. What is the proposed relationship? How can it be explained?
A student in lab has just used their mtDNA chromatogram to construct a list of mutations found in their sequence. Based on the key mutations found in their sequence, they believe they belong to either haplogroup Q or haplogroup M1. The presence of which mutation would help them determine between haplogroup Q or haplogroup M1? T16278C G16129A! T16187C T16311C! T16362C A16241G
The tiny frog Paedophryne amauensis was discovered by researchers purposefully searching for the source of an unusual sound, but sometimes similarity between two species can lead scientists to accidental discoveries. A previously unknown species of wild cat was inadvertently discovered by researchers who were sequencing the DNA of a house cat–sized South American wild cat called the tigrina. The DNA analysis revealed that many alleles found in the supposed tigrinas living in northeastern Brazil are not shared with other tigrinas. This finding suggested that the northeastern cats do not interbreed with other tigrinas and are therefore a different species. What prevents the two species from interbreeding?
Match the numbered concepts to the lettered facts. Explain why each pair is the best match. (1) Gene Duplication (2) Molecular Clock (3) Pseudogene (4) SINES and LINES a. Different kinds of globin chains arose over time including myoglobin, alpha globin, beta globin 1, delta globin, and beta globin 2.b. The two human beta globin genes, 1 and 2, differ at 20 base pair sites; only beta gene 1 produces a functional protein.c. In human hemoglobin, the delta polypeptide chain differs by 39 amino acid sites vs. the beta chain.d. The human alpha globin gene and the mouse alpha globin gene are orthologous to each other.

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