• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Maternal effect genes
Maternal effect genes

... fate of adult cells has been mapped with the nematode. ...
Lecture 1
Lecture 1

... 1. Gene Expression = translation, production of proteins, tRNA, mRNA and ribosomes 2. Gene regulation is the cellular control of the amount and timing of the appearance of functional gene products. The functional gene product can be RNA, protein but mostly it is the regulation of the expression of t ...
Christa Merzdorf, Elena Kalinina-Turner -- Cell
Christa Merzdorf, Elena Kalinina-Turner -- Cell

... tube closures. Since mutations in Zic2 or Zic3 genes in mouse and humans are known to cause neural tube defects (Merzdorf, 2007), our hypothesis stated that either Zic2 or Zic3 regulates the aquaporin that aids in closing the neural tube. Morpholino oligonucleotides (MOs) were used to address which ...
Genetic Engineering
Genetic Engineering

... One of the main biological problems with replacing damaged tissue through the use of embryonic stems cells isA) immunological rejection of the tissue by the patient.B) that stem cells may not target appropriate tissue.C) the time needed to grow sufficient amounts of tissue from stem cells.D) that ge ...
SBI 3U Genetics Test Review Sheet
SBI 3U Genetics Test Review Sheet

... 46.  During  meiosis,  crossing  over  increases  genetic  diversity  when  the  sister  chromatids  exchange  segments  of   DNA  so  that  they  are  no  longer  genetically  identical.  Random  assortment  also  increases  genetic  diversi ...
Five Genes Help Form a Face
Five Genes Help Form a Face

Producing Transgenic Plants
Producing Transgenic Plants

... The choice of tissue depends on the species, but some common ones are immature embryos, leaf disks, and apical meristems. The tissue must be capable of generating callus (undifferentiated tissue), from which the complete plant can be produced. Arabidopsis buds can simply be sprayed with a solution o ...
Genetics and Mendel
Genetics and Mendel

... to breed. He buys a bunch of white female sheep, but is unsure if they are homozygous dominant or heterozygous. He wants to breed his sheep, but wants to make sure he’s not going to get any black sheep. Black sheep produce wool that he can’t sell, and he already has 3 living on his farm. He decides ...
VE#10
VE#10

... SNPs Are Used to Find the Locations of Genes Associated with Particular Traits  Once we know where the SNPs are located in an organism’s genome, they can be used to home in on the genes  of interest. In a GWAS, scientists typically compare SNPs in two groups of individuals: one with one version of  ...
Topic 3 and 8 Sample Multiple Choice Questions
Topic 3 and 8 Sample Multiple Choice Questions

... In humans the blood groups A, B, AB and O are determined by three alleles of an autosomal gene: IA, IB, and i. Alleles IA and IB are codominant and allele i recessive. The phenotypes of some individuals in the pedigree below are shown. ...
Biomedical Research
Biomedical Research

... Animals and fungi tend to reduce extra in their genomes faster than plants. Wheat, for instance, appears to have duplicated its 7 chromosomes twice to 21. Plants have many more isozymes (members of a gene family with similar roles) than animals or fungi, perhaps because they can’t move if conditions ...
Human Genetics - Biology Department
Human Genetics - Biology Department

...  Have 23 pairs  1 of each pair came from mom  1 of each pair came from dad ...
Heredity and the Origin of Life
Heredity and the Origin of Life

... Genes, Chromosomes, and Heredity • Not all chromosomes have the same number of genes • Chromosome number is different for different organisms, but in humans = 46. • Chromosomes occur in pairs; thus, humans have 23 pairs of chromosomes • Each member of a pair of chromosomes has the same type of gene ...
Document
Document

... Genes are passed on from parents and determine traits. Where two or more alleles for a gene exist, some may be dominant and others recessive. In sexually reproducing organisms, offspring receive a copy of each gene from each parent. The alleles segregate when forming gametes. Alleles for different g ...
F factor
F factor

... - Allows bacteria to be resistant (R) to drugs that would normally kill them - Also often contain genes for sex pilus = can be transferred by conjugation (F plasmids) ...
Chapter 14
Chapter 14

... Nondisjunction-failure of homologous chromosomes to separate a. Gamete inherits a diploid set of chromosomes i.Triploidy- At fertilization, gamete fuses with a normal gamete and zygote is triploid. (3 sets of chromosomes)- banana, apples ii. Tetraploidy = 4 sets of chromosomes (day lily, wheat) ...
BioSc 231 Exam 2 2008
BioSc 231 Exam 2 2008

... A antigens on the cell surface B antigens on the cell surface both A and B antigens on the cell surface no surface antigens ...
Albinism Advanced - xy-zoo
Albinism Advanced - xy-zoo

... The genetics of coat color in animals includes many genes in a complex biosynthetic pathway. The amino acid tyrosine is first converted to dopaquinone by the enzyme TYR, for tyrosinase, and will be designated as the “C” gene (for “color”). If tyrosinase is not present, the animal will be albino. Dop ...
What are enteric bacteria?
What are enteric bacteria?

...  Bacterial genomes are tightly packed with genes and other functional elements. Their genomes range from 0.2-10 Mb (~200 to 10,000 genes) and contain very little repetitive, transposable, & non-coding DNA  Base composition (G+C content) is relatively homogeneous over the entire chromosome, such th ...
Biosafety and recombinant DNA technology
Biosafety and recombinant DNA technology

... activity – Gene products code for toxins. ...
CARD9
CARD9

... identified by ChIP experiments? Is there any putative binding sites for transcriptional factors identified by different experiments? If yes, report the name of the transcription factor and its binding position. ...
Genetics - Sakshieducation.com
Genetics - Sakshieducation.com

... 3)Genes loosely limked on the same chromosomes show similar recombinations 4)Tightly linked genes on the same chromosomes show very few recombinations 25. ABO blood groups in humans are controlled by the gene I. it has three alleles- I^A,I^B and i . Since there are three different alleles, six diffe ...
chapter 15 - Scranton Prep Biology
chapter 15 - Scranton Prep Biology

... Genetic recombination : The production of offspring with new combinations of events the from results different from those combinatibns found in the parents; meiosis and random fertilization. 1. The recombination of unlinked genes: independent assortment of chromosomes Mendel discoveredthat some offs ...
Do the constraints of human speciation cause
Do the constraints of human speciation cause

... surprising that this is the most attractive character for female mate choice in humans. Many of the X-chromosome MR traits are also associated with urogenital anomalies. Macroscopically visible structural or endocrine malfunction (hypogonadism) has been observed in 22 syndromic XLMRs of 68 XLMRs inv ...
click here
click here

... align along the metaphase plate and segregate randomly- one cell would get 1 homolog, one cell would get two, for each chromosome in the set (7). Ans: c) 3. The disease is X-linked and being passed through the dad. The son must therefore receive both the X and Y chromosome from the dad. They would n ...
< 1 ... 620 621 622 623 624 625 626 627 628 ... 779 >

Genomic imprinting

Genomic imprinting is the epigenetic phenomenon by which certain genes are expressed in a parent-of-origin-specific manner. If the allele inherited from the father is imprinted, it is thereby silenced, and only the allele from the mother is expressed. If the allele from the mother is imprinted, then only the allele from the father is expressed. Forms of genomic imprinting have been demonstrated in fungi, plants and animals. Genomic imprinting is a fairly rare phenomenon in mammals; most genes are not imprinted.In insects, imprinting affects entire chromosomes. In some insects the entire paternal genome is silenced in male offspring, and thus is involved in sex determination. The imprinting produces effects similar to the mechanisms in other insects that eliminate paternally inherited chromosomes in male offspring, including arrhenotoky.Genomic imprinting is an inheritance process independent of the classical Mendelian inheritance. It is an epigenetic process that involves DNA methylation and histone methylation without altering the genetic sequence. These epigenetic marks are established (""imprinted"") in the germline (sperm or egg cells) of the parents and are maintained through mitotic cell divisions in the somatic cells of an organism.Appropriate imprinting of certain genes is important for normal development. Human diseases involving genomic imprinting include Angelman syndrome and Prader–Willi syndrome.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report