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 Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
Question
What are some differences between the types of
sequences found in eukaryotic chromosomes versus bacterial chromosomes?
Transcribed Image Text: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.
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