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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. Genomes A, B, and C all have basic chromosomenumbers (x) of nine. These genomes were derivedoriginally from plant species that had diverged from each other sufficiently far back in the evolutionarypast that the chromosomes from one genome can nolonger pair with the chromosomes from any other genome. For plants with the following kinds of euploidchromosome complements, (i) state the number ofchromosomes in the organism; (ii) provide terms thatdescribe the individual’s genetic makeup as accurately as possible; (iii) state whether or not it is likelythat this plant will be fertile, and if so, give the number of chromosomes (n) in the gametes.a. AABBCb. BBBBc. CCCd. BBCCe. ABCf. AABBCC
• Illustrate the chromosome changes in interphase and mitosis using a diploid cell that is 2n=4 (two large and two small chromosomes). • Label the circles as G1 and G2 stages of interphase and each phase of mitosis (in order). Draw the chromosome in each circle using the following guidelines. 1) For unreplicated chromosome draw a line (/) and for replicated chromosome draw an X. 2) For simplicity, do not indicate that the chromosomes are decondensed chromatin during interphase. ● 3) Skip drawing the nuclear membrane or spindle fibers, since we are focusing on the chromosomes. • Label genes in the resulting daughter cells as A/a and B/b. (These letters represent genes which are at icular places along the DNA molecule. Each chromosomes can have a thousand genes but we are focusing on these two.
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cell type: 9) Label the figure below. Chromosome number: cytokinesis by: division type: А- В- С- D- E- the halves the number of chromosomes, and at the same time, stage. The result is 10) daughter cells event that causes genetic diversity takes place in called (n? 2n?). An organism with two of each kind of chromosome is said to be: (3) tetraploid (1) haploid (2) diploid (4) polyploid. In multicellular organisms, mitosis results in: (1) reproduction (2) growth and repair (3) sperm and egg production (4) fertilization. If an organism produced an egg that had 20 chromosomes, the body cells of that organism should have: (1) 10 chromosomes (2) 20 chromosomes (3) 30 chromosomes (4) 40 chromosomes. 11) is what helps us grow and is why we are all unique! Human female karyotype contains .... (number) pairs autosomal and sex chromosomes. separate to go opposite poles in Anaphase in mitosis, while in Meiosis in AnaphaseI. (how many?) 12) If a diploid parent cell with 8 chromosomes (2n=8)…
puey drganlsm yo are working with has the following chromosomes. Place the chromosomes of this organism onto the cell below such that the diagram accurately shows a cell from this organism in metaphase of mitosis. Note 1: Only place chromosomes you need. You don't need them all. Note 2: You can place the 'Blank Box' image if you don't think you need a chromosome at a particular position. Dashed line - the metaphase plate 1.
Which is a common chromosome configuration during prophase, metaphase, and anaphase? • Chromosomes materialize as sister chromatids in all stages of mitosis stay in its condensed form during the mentioned stages of mitosis. Chromosomes Chromosomes seem to be with its homologous pair all throughout the cell's life cycle O Chromosomes appear as single chromatids in all of the mentioned stages of mitosis.
ganism you are working with has the following chromosomes. Place the chromosomes of this organism onto the cell below such that the diagram accurately shows a cell from this organism in metaphase of mitosis. Note 1: Only place chromosomes you need. You don't need them all. Note 2: You can place the 'Blank Box' image if you don't think you need a chromosome at a particular position. Deshed ine the metaphase plate
Which of the following statements about centromeres is false? Group of answer choices They hold sister chromatids together "Lower" eukaryotes are associated with complex sequences and modified histones, while "higher" eukaryotes are associated with conserved DNA sequences They are constricted because of the satellite DNA packed as heterochromatin They are essential for separation of the chromatids in mitosis and meiosis
● ● Illustrate the chromosome changes in interphase and mitosis using a diploid cell that is 2n=4 (two large and two small chromosomes). Label the circles as G1 and G2 stages of interphase and each phase of mitosis (in order). Draw the chromosome in each circle using the following guidelines. 1) For unreplicated chromosome draw a line (/) and for replicated chromosome draw an X. 2) For simplicity, do not indicate that the chromosomes are decondensed chromatin during interphase. 3) Skip drawing the nuclear membrane or spindle fibers, since we are focusing on the chromosomes. Label genes in the resulting daughter cells as A/a and B/b. (These letters represent genes which are at particular places along the DNA molecule. Each chromosomes can have a thousand genes but we are focusing on these two.) Ask me Qs in class if anythign on this is not clear.
Canvas What do the structures A and B represent ? A O Homologous chromosomes O Non-homologous chromosomes O Non-sister chromatids O Sister chromatids Chp 田

Please help Place the images of the cell division in the right order and label them a) What is the final product of this type of cell division? Indicate the number of dauahter cells, the TYPE OF CELLS (somatic cells? sex cells? other?), where in the body this process takes place, whether they are genetically diverse pridentical, haploid or diploid, the chromosome number in human cells, whether they contain sinale- or double-stranded chromosomes, and what the "fate" of these cells is i.e. what will they go on to do, if given the chance)?
Across 12. 9.) one of two idéntical halves of a replicated chromosomes 15 17 12.) the structure that forms during cytokinesis in plants separating the two daughter cells 8 9. 10 13.) the condition of halving more than two sets of chromosomes per. 11 12 13 |14 Down 4.) the complex of DNA and prótein that makes up eukaryotic chromosomes 15 16 17 18 5.) the condition of having one set of chromosomes (n) per nucleus 19 20 7.) the chromosome complex formed by the synapsis of a pair of homologous 4.