What kind of chromosomes do eukaryotes have?
Eukaryotes typically possess multiple pairs of linear chromosomes, all of which are contained in the cellular nucleus, and these chromosomes have characteristic and changeable forms. During cell division, for example, they become more tightly packed, and their condensed form can be visualized with a light microscope.
What are eukaryotic chromosomes made of quizlet?
Eukaryotic chromosomes are composed of chromatin, a complex of DNA and associated proteins. In fact, most eukaryotic chromosomes are about 60% protein and 40% DNA.
Are eukaryotic chromosomes composed entirely of DNA?
Eukaryotic chromosomes are composed entirely of DNA. … there are many replication origins in the single bacterial chromosome and only one in each chromosome of eukaryotic cells.
Why do eukaryotes have linear chromosomes?
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.
What are the essential structural elements of a functional eukaryotic chromosome?
In order to duplicate and segregate correctly, chromosomes must contain three functional elements: (1) origins for initiation of DNA replication; (2) the centromere; and (3) the two ends, or telomeres.
Do eukaryotes have plasmids?
Plasmids naturally exist in bacterial cells, and they also occur in some eukaryotes. Often, the genes carried in plasmids provide bacteria with genetic advantages, such as antibiotic resistance. Plasmids have a wide range of lengths, from roughly one thousand DNA base pairs to hundreds of thousands of base pairs.