What percentage of chromosomes are in eukaryotic RNA?
Answer Expert Verified
80 percent of rRNA in the total RNA is present in the Eukaryotes.
How many chromosomes are in a eukaryotic cell?
For example, most eukaryotes are diploid, like humans who have 22 different types of autosomes, each present as two homologous pairs, and two sex chromosomes. This gives 46 chromosomes in total.
Is RNA present in human chromosome?
chromosome, the microscopic threadlike part of the cell that carries hereditary information in the form of genes. … Among eukaryotes, the chromosomes are contained in a membrane-bound cell nucleus. The chromosomes of a eukaryotic cell consist primarily of DNA attached to a protein core. They also contain RNA.
What is the composition of eukaryotic chromosomes?
Each eukaryotic chromosome is composed of DNA coiled and condensed around nuclear proteins called histones. Humans inherit one set of chromosomes from their mother and a second set from their father.
How does the Escherichia coli RNA polymerase recognize a gene?
E. coli RNA polymerase. … The DNA sequence to which RNA polymerase binds to initiate transcription of a gene is called the promoter. The DNA sequences involved in promoter function were first identified by comparisons of the nucleotide sequences of a series of different genes isolated from E.
Does RNA polymerase have RNA?
RNA polymerase II synthesizes precursors of mRNAs and most sRNA and microRNAs. RNA polymerase III synthesizes tRNAs, rRNA 5S and other small RNAs found in the nucleus and cytosol.
|DNA-Directed RNA Polymerase|
|RNA Polymerase hetero27mer, Human|
Do eukaryotes have linear chromosomes?
Since eukaryotic cells typically have multiple linear chromosomes, capped with telomeres, eukaryotic DNA replication and cell division (mitosis and meiosis) are a bit more complicated. In eukaryotic cells, DNA replication occurs before mitosis begins, and it can’t occur while the cell is dividing.
Do we have 46 chromosomes in each cell?
In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females.
Why are eukaryotic chromosomes linear?
In most eukaryotic cells, DNA is arranged in multiple linear chromosomes. … This is a phenomenon which occurs due to the directionality of DNA replication enzymes, resulting in the gradual loss of genetic material at the ends of linear chromosomes after each subsequent cycle of cell and DNA replication.