WebA) It adds the poly-A tail to the 3' end of the mRNA. B) It codes for a sequence in eukaryotic transcripts that signals enzymatic cleavage ~10-35 nucleotides away. C) It allows the 3' … Web20 de out. de 1988 · A specific protein, bound to DNA, can activate transcription of a wide array of genes in many eukaryotes. Further analysis suggests a general outline for how eukaryotic transcriptional activators function and are controlled.

Transcription factors (article) Khan Academy

WebRepetitive regions at the very ends of chromosomes are called telomeres, and they're found in a wide range of eukaryotic species, from human beings to unicellular protists. Telomeres act as caps that protect the internal regions of the chromosomes, and they're worn down a small amount in each round of DNA replication. WebA mutation that knocks out the p53 gene can lead to excessive cell growth and cancer. The p53 gene is often called the "guardian angel of the genome". Damage to the cell's DNA leads to expression of the p53 gene. The p53 protein can: activate the p21 gene, which halts the cell cycle. turn on genes involved in DNA repair. activate "suicide genes ... the preserve at tidewater sneads ferry nc

Mastering Biology Chp. 15 HW Flashcards Quizlet

WebStudy with Quizlet and memorize flashcards containing terms like Why is the lac operon said to be an inducible operon? When allolactose is present, it induces the inactivation of the … WebAlexa Jacob. The Endoplasmic Reticulum in a eukaryotic cell is the transport network of the cell and it extends from and connects the nuclear membrane to the plasma membrane of a cell. But then whenever we draw a diagram of a typical plant or animal cell, we never extend it to the plasma membrane- we always leave it somewhere in the cytoplasm. WebGene expression in eukaryotes is influenced by a wide variety of mechanisms, including the loss, amplification, and rearrangement of genes. Genes are differentially transcribed, … the preserve at trillium creek