Checklist unit 18: Regulation of Gene Expression
... for an entire molecular pathway, including the operator, the promoter, and the genes they control (in prokaryotes, all genes related to specific pathway are found in one continuous strip of DNA). A mechanism for positive gene regulation (an increase in gene expression) is the activator protein, whic ...
... for an entire molecular pathway, including the operator, the promoter, and the genes they control (in prokaryotes, all genes related to specific pathway are found in one continuous strip of DNA). A mechanism for positive gene regulation (an increase in gene expression) is the activator protein, whic ...
Unit 7.2 ws
... DNA and therefore start the synthesis of mRNA. C. It is the place where RNA polymerase can bind to DNA and enable the lac repressor gene to work. D. It lets the lac repressor bind to DNA. ...
... DNA and therefore start the synthesis of mRNA. C. It is the place where RNA polymerase can bind to DNA and enable the lac repressor gene to work. D. It lets the lac repressor bind to DNA. ...
Presentazione di PowerPoint
... This type of gene-gene interaction, or epistasis, plays an important role in polygenic traits that require the simultaneous presence of variations in multiple genes in order to result in a pathologic phenotype. ...
... This type of gene-gene interaction, or epistasis, plays an important role in polygenic traits that require the simultaneous presence of variations in multiple genes in order to result in a pathologic phenotype. ...
genome433
... two homologous chromosomes (for example, the homologous chromosome 1 copies that you received, one from your mother and one from your father). Most human haploid genomes differ by about 1-3 million SNPs from each other. There are a variety of mechanisms used to identify SNPs. The disadvantage of SNP ...
... two homologous chromosomes (for example, the homologous chromosome 1 copies that you received, one from your mother and one from your father). Most human haploid genomes differ by about 1-3 million SNPs from each other. There are a variety of mechanisms used to identify SNPs. The disadvantage of SNP ...
Horizontal Gene Transfer in Prokaryotes
... as ‘vertical gene transfer’. The division of single cells into two identical offspring produces clones, or genetically identical individuals. Prokaryotes can grow rapidly: Escherichia coli can double every 20 minutes. In addition to this asexual cell division, prokaryotes have several mechanisms thr ...
... as ‘vertical gene transfer’. The division of single cells into two identical offspring produces clones, or genetically identical individuals. Prokaryotes can grow rapidly: Escherichia coli can double every 20 minutes. In addition to this asexual cell division, prokaryotes have several mechanisms thr ...
Ch 25 and 26 Phylogeny and The History of Life on Earth
... – Some analogous structures (wings in insect compared to a bat) may have very different molecular origins. The result of convergent evolution. ...
... – Some analogous structures (wings in insect compared to a bat) may have very different molecular origins. The result of convergent evolution. ...
Lecture 4
... When analyzing sequences, one often rely on the fact that two stretches are similar to infer that they are homologous (and therefore related).. But sequences with repeated patterns will match without there being any philogenetic relation! Sequences like ATATATACTTATATA which are mostly two letters a ...
... When analyzing sequences, one often rely on the fact that two stretches are similar to infer that they are homologous (and therefore related).. But sequences with repeated patterns will match without there being any philogenetic relation! Sequences like ATATATACTTATATA which are mostly two letters a ...
Genes Expression or Genes and How They Work: Transcription
... – In mitochondrial DNA, UGA is not a stop codon as it is in “universal code” – Other codons are different – Chloroplasts and ciliates (protists) have ______________________________ • It is thought that the changes to _____________________________________________ __________________________________ ...
... – In mitochondrial DNA, UGA is not a stop codon as it is in “universal code” – Other codons are different – Chloroplasts and ciliates (protists) have ______________________________ • It is thought that the changes to _____________________________________________ __________________________________ ...
Document
... • Regulatory proteins intervene before, during or after gene transcription or translation. Ie. Hormones, initiate changes in cell activities when they dock at suitable receptors. • Negative control- slow or stop gene action (repressor protein) • Positive control- promote or enhance it (activator pro ...
... • Regulatory proteins intervene before, during or after gene transcription or translation. Ie. Hormones, initiate changes in cell activities when they dock at suitable receptors. • Negative control- slow or stop gene action (repressor protein) • Positive control- promote or enhance it (activator pro ...
HB B EXAM ReviewJeopardy
... A coin is tossed three times. The probability that it will land heads up all three times is ...
... A coin is tossed three times. The probability that it will land heads up all three times is ...
Genetics Vocabulary Note-Taking Chart
... determines the organism’s genetic traits _____________________________. Gene, n. A _______________________ on a Your eye color is controlled by your chromosome that determines a particular ____________. Genetic, adj. inherited characteristics-coding for a specific _______________ RNA, n. The genetic ...
... determines the organism’s genetic traits _____________________________. Gene, n. A _______________________ on a Your eye color is controlled by your chromosome that determines a particular ____________. Genetic, adj. inherited characteristics-coding for a specific _______________ RNA, n. The genetic ...
Evolution of genomes
... the existence of highly repetitive non-coding DNA produced by transposable elements. ...
... the existence of highly repetitive non-coding DNA produced by transposable elements. ...
12-5 Gene Regulation - Lincoln Park High School
... transcription of the lac genes? Lactose binds to the repressor protein, causing it to release from the operator site, and RNA polymerase can bind to the promter ...
... transcription of the lac genes? Lactose binds to the repressor protein, causing it to release from the operator site, and RNA polymerase can bind to the promter ...
Biological and Environmental Factors
... Gametes-sex cells (sperm 23 chromosomes and ovum 23 chromosomes) Meiosis- cell division that forms gametes No two gametes will ever be the same Zygote- sperm and ovum unite at conception 46 Chromosomes Sperm are produced continuously; all ova are present at birth 22 autosomes; 1 sex chromosome; xy- ...
... Gametes-sex cells (sperm 23 chromosomes and ovum 23 chromosomes) Meiosis- cell division that forms gametes No two gametes will ever be the same Zygote- sperm and ovum unite at conception 46 Chromosomes Sperm are produced continuously; all ova are present at birth 22 autosomes; 1 sex chromosome; xy- ...
Handout
... the new RNA strand has ribonucleotides instead of deoxyribonucleotides & uracil (U) is used in place of thymine (T) to base pair with adenine (A) RNA polymerase binds to a promoter (special start site on DNA), then polymerizes the new chain using complementary bases polymerization stops upon reachin ...
... the new RNA strand has ribonucleotides instead of deoxyribonucleotides & uracil (U) is used in place of thymine (T) to base pair with adenine (A) RNA polymerase binds to a promoter (special start site on DNA), then polymerizes the new chain using complementary bases polymerization stops upon reachin ...
From Mendel to Human Genome
... _______________ were observed inside the _______________ of a cell. Who, in 1902, observed that chromosomes could be sorted into almost identical pairs. The two members of a pair, after the Greek word homologos. ...
... _______________ were observed inside the _______________ of a cell. Who, in 1902, observed that chromosomes could be sorted into almost identical pairs. The two members of a pair, after the Greek word homologos. ...
DNA, Chromosomes & Genes - Science
... • A chromosome is about 0.004 mm long • The DNA is about 4 cm long • This is about 10 000 times longer than the chromosome – So it has to twist and coil to fit inside ...
... • A chromosome is about 0.004 mm long • The DNA is about 4 cm long • This is about 10 000 times longer than the chromosome – So it has to twist and coil to fit inside ...
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.