Key features: Telomere • Eukaryotic chromosomes are usually linear. • Eukaryotic chromosomes occur in sets. Many species are diploid, which means that somatic cells contain 2 sets of chromosomes. - Origin of replication .A typical chromosome is tens of millions to hundreds of millions of base pairs in length. • Genes are interspersed throughout the chromosome. A typical chromosome contains between a few hundred and several - Origin of replication thousand different genes. • Each chromosome contains many origins of replication that are interspersed about every 100,000 base pairs. Kinetochore proteins Centromere • Each chromosome contains a centromere that forms a recognition site for the kinetochore proteins. • Telomeres contain specialized sequences located at both ends of the linear chromosome. -Origin of replication • Repetitive sequences are commonly found near centromeric and telomeric regions, but they may also be interspersed throughout the chromosome. Origin of replication H Genes Telomere Repetitive sequences FIGURE 10.7 Organization of eukaryotic chromosomes.
Key features: Telomere • Eukaryotic chromosomes are usually linear. • Eukaryotic chromosomes occur in sets. Many species are diploid, which means that somatic cells contain 2 sets of chromosomes. - Origin of replication .A typical chromosome is tens of millions to hundreds of millions of base pairs in length. • Genes are interspersed throughout the chromosome. A typical chromosome contains between a few hundred and several - Origin of replication thousand different genes. • Each chromosome contains many origins of replication that are interspersed about every 100,000 base pairs. Kinetochore proteins Centromere • Each chromosome contains a centromere that forms a recognition site for the kinetochore proteins. • Telomeres contain specialized sequences located at both ends of the linear chromosome. -Origin of replication • Repetitive sequences are commonly found near centromeric and telomeric regions, but they may also be interspersed throughout the chromosome. Origin of replication H Genes Telomere Repetitive sequences FIGURE 10.7 Organization of eukaryotic chromosomes.
Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter6: Cytogenetics: Karyotypes And Chromosome Aberrations
Section: Chapter Questions
Problem 1QP: Analyzing Karyotypes 1. Originally, karyotypic analysis relied only on size and centromere placement...
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What are some differences between the types of
sequences found in eukaryotic chromosomes versus bacterial chromosomes?
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