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Gene clusters for β-lactam antibiotics and control of their expression
Gene clusters for β-lactam antibiotics and control of their expression

... enzymes that carry out these two sequential steps. Genes cefE and cefF encode proteins with about 70% identity in amino acids, and which are 60% identical to the protein encoded by cefEF in fungi. It is likely that a gene duplication event served as the origin of the two genes, which subsequently be ...
Intra-isolate genome variation in arbuscular mycorrhizal
Intra-isolate genome variation in arbuscular mycorrhizal

... whether this genetic variation on the genome level actually contributes to the AMF phenotype. To investigate the extent to which polymorphisms in nuclear genes are transcribed, we analysed the intra-isolate genomic and cDNA sequence variation of two genes, the large subunit ribosomal RNA (LSU rDNA) ...
The UCSC Known Genes
The UCSC Known Genes

... proteins were not available. Hence we decided to develop an automated process to construct the UCSC Known Genes dataset based on the latest protein data from Swiss-Prot/TrEMBL (Bairoch et al., 2005), now also known as UniProt, and the associated mRNA data from GenBank (Benson et al., 2005). While th ...
14B-ExtndngMendelanGenetcs
14B-ExtndngMendelanGenetcs

... heterozygous (BbCc) will follow the law of independent assortment. • However, unlike the 9:3:3:1 offspring ratio of an normal Mendelian experiment, the ratio is nine black, three brown, and four white. ...
Elucidation of the Genetic Code
Elucidation of the Genetic Code

... •  For each synthetic triplet RNA set up 20 reactions; only one contains a specific 14C-labelled amino acid •  Ask which reaction causes radioactivity to be retained on the filter •  That’s the one encoded by the triplet codon! ...
Mendelian Genetics Practice
Mendelian Genetics Practice

... 8) In fruit flies the allele for normal size wings (W) is dominant over the allele for vestigial wings (w). The allele for normal size eyes (E) is dominant over the allele for small eyes (e). The genes for wing size and eye size are on different chromosomes. Use a Punnett Square to predict the resul ...
CHAPTER 14 MENDEL AND THE GENE IDEA Section B: Extending
CHAPTER 14 MENDEL AND THE GENE IDEA Section B: Extending

... heterozygous (BbCc) will follow the law of independent assortment. • However, unlike the 9:3:3:1 offspring ratio of an normal Mendelian experiment, the ratio is nine black, three brown, and four white. ...
Sex Chromosomal Transposable Element Accumulation
Sex Chromosomal Transposable Element Accumulation

... higher mean sequence divergence than those on the autosomes or at the ZFX locus. For the AluJ and AluS classes, these differences are significant (P , 0.01, ttest). For each Alu class, the divergence for Alu elements located on the autosomes is intermediate to those at the ZFY and ZFX loci. Thus, Al ...
14B-ExtndngMendelanGenetcs
14B-ExtndngMendelanGenetcs

... heterozygous (BbCc) will follow the law of independent assortment. • However, unlike the 9:3:3:1 offspring ratio of an normal Mendelian experiment, the ratio is nine black, three brown, and four white. ...
Full text in pdf - International Microbiology
Full text in pdf - International Microbiology

... enzymes that carry out these two sequential steps. Genes cefE and cefF encode proteins with about 70% identity in amino acids, and which are 60% identical to the protein encoded by cefEF in fungi. It is likely that a gene duplication event served as the origin of the two genes, which subsequently be ...
A global view of pleiotropy and phenotypically derived gene function
A global view of pleiotropy and phenotypically derived gene function

... range of pleiotropies by phenotype profile successfully groups genes with common biological functions. The fact that both condition-specific and highly pleiotropic genes can be grouped by common phenotype profiles into gene sets that show significant enrichment for known biological processes suggests th ...
Population Genetics
Population Genetics

... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
4th- 9 Week`s Exam Study Guide 4th Nine Weeks Study Guide 1
4th- 9 Week`s Exam Study Guide 4th Nine Weeks Study Guide 1

... 42.A hybrid is the offspring of parents that have different alleles for a trait. _________________________ 43.A pea plant that is heterozygous for tall stems has the alleles Tt. _________________________ 44.A Punnett square shows all the possible combinations of alleles resulting from a cross. _____ ...
The diagram below shows a partial sequence of nucleotide bases
The diagram below shows a partial sequence of nucleotide bases

... (A) The mutation will likely result in a large, nonfunctional polypeptide, because the insertion of the T base will change all of the DNA triplets that are read “downstream,” including the stop codon, and a large, deformed polypeptide with different physical and chemical properties will result. Dist ...
Document
Document

... © 2011 Pearson Education, Inc. ...
3_2 MI_Semester One Study Guide
3_2 MI_Semester One Study Guide

...  What are the four types/classes of genetic disorders? How is each type inherited? What are examples of each? (1 MC)  What is a karyotype? What can be learned by examining a karyotype? (1 MC)  What is a pedigree? How do you read and create a pedigree? Why are they used? (1 MC)  Why are Punnett S ...
Cloning, sequence and in vitro transcription/translation analysis of a
Cloning, sequence and in vitro transcription/translation analysis of a

... beginning of ORF I (.5’-GTATGAGT) and the 1-nt overlap between the end of ORF 1 and the beginning of ORF E (5’-CTTAATGGC) suggest possible translational coupling of these ORFs during translation from a single polycistronic transcript (Normark et al.. 1983) derived from an AIE operon. The presence of ...
Codon Dictionary Worksheet
Codon Dictionary Worksheet

... So, if the mRNA codon is UUU, what tRNA anticodon is complementary? (Answer: AAA) If the mRNA codon is UAC, what tRNA anticodon is complementary? (Answer #4 below) If the mRNA codon is GGU, what tRNA anticodon is complementary? (Answer #5 below) If the tRNA anticodon is UAC, with which mRNA codon do ...
Mutational landscape of the human Y chromosome
Mutational landscape of the human Y chromosome

... Kumari et al. 2012). Sporadic mutations and environmental factors both affect the Y chromosome causing alteration in genes and loci. These alterations predispose individuals to produce sperm with de novo mutations that are passed on to the progeny with defective Y chromosome. Of all the important ge ...
Principles of Heredity
Principles of Heredity

... Principles of Heredity Mendel proposed: 1. Each trait is governed by two factors – now called genes. 2. Genes are found in alternative forms called alleles. 3. Some alleles are dominant and mask alleles that are recessive. ...
ch 11 notes
ch 11 notes

... feminine body characteristics. Normal intelligence. Trisomy X – XXX: 1:1000 live births - healthy and fertile usually cannot be distinguished from normal female Monosomy X – Turner’s Syndrome: 1:5000 live births; the only viable monosomy in humans - women with Turner's have only 45 chromosomes!!! XO ...
Genetic recombination and mutations - formatted
Genetic recombination and mutations - formatted

... Mutagens can be divided into chemical agents and physical agents. In addition, transposable elements that occur in genomes are potent mutagens i.e. they can cause major alterations in the gene structure and sequence. ...
Chapter 11 Powerpoint
Chapter 11 Powerpoint

... complex has been constructed at the promoter • Construction of the pre-initiation complex is a stepwise recruitment process that eventually brings in RNA pol II • Multiple transcription factors are involved, know them and their functions • The primary transcript is capped almost immediately by a met ...
Speciation: The Genetics Responsible for Intrinsic Post
Speciation: The Genetics Responsible for Intrinsic Post

... of forming two species is called speciation. Speciation is formally defined as the evolutionary formation of a new biological species, usually driven by the divergence of one species into two or more genetically distinct ones. Speciation can occur by many different mechanisms, including physical sep ...
Work Day 1
Work Day 1

... Genotype can perturb phenotype The following statements describe how a change in genotype can perturb phenotype. Number them in the best sequential order (1=earliest event, 4=latest event): ...
< 1 ... 372 373 374 375 376 377 378 379 380 ... 1482 >

Gene



A gene is a locus (or region) of DNA that encodes a functional RNA or protein product, and is the molecular unit of heredity. The transmission of genes to an organism's offspring is the basis of the inheritance of phenotypic traits. Most biological traits are under the influence of polygenes (many different genes) as well as the gene–environment interactions. Some genetic traits are instantly visible, such as eye colour or number of limbs, and some are not, such as blood type, risk for specific diseases, or the thousands of basic biochemical processes that comprise life.Genes can acquire mutations in their sequence, leading to different variants, known as alleles, in the population. These alleles encode slightly different versions of a protein, which cause different phenotype traits. Colloquial usage of the term ""having a gene"" (e.g., ""good genes,"" ""hair colour gene"") typically refers to having a different allele of the gene. Genes evolve due to natural selection or survival of the fittest of the alleles.The concept of a gene continues to be refined as new phenomena are discovered. For example, regulatory regions of a gene can be far removed from its coding regions, and coding regions can be split into several exons. Some viruses store their genome in RNA instead of DNA and some gene products are functional non-coding RNAs. Therefore, a broad, modern working definition of a gene is any discrete locus of heritable, genomic sequence which affect an organism's traits by being expressed as a functional product or by regulation of gene expression.
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