Fall 2014
... 35. One story that has recently been in the news is about a woman who was born without a uterus and therefore had a donated uterus transplanted into her own body. Doctors extracted an egg from her ovary, fertilized it with her husband’s sperm in the laboratory, then implanted the resulting embryo in ...
... 35. One story that has recently been in the news is about a woman who was born without a uterus and therefore had a donated uterus transplanted into her own body. Doctors extracted an egg from her ovary, fertilized it with her husband’s sperm in the laboratory, then implanted the resulting embryo in ...
Cell wall
... store genetic information) in each eukaryote Histone: beadlike protein structure, Ex: each human cell has about 1.8 meters of DNA, but wound on the histones it has about 90 millimeters of chromatin Before cell division, DNA is replicated and tightly coiled and bound in identical pairs called chromat ...
... store genetic information) in each eukaryote Histone: beadlike protein structure, Ex: each human cell has about 1.8 meters of DNA, but wound on the histones it has about 90 millimeters of chromatin Before cell division, DNA is replicated and tightly coiled and bound in identical pairs called chromat ...
013368718X_CH04_047
... In animal cells, the cell membrane draws in and pinches off. In plant cells, a cell plate forms, followed by a new cell membrane, and finally a new cell wall forms. ...
... In animal cells, the cell membrane draws in and pinches off. In plant cells, a cell plate forms, followed by a new cell membrane, and finally a new cell wall forms. ...
Cell Division
... • About 2 trillion cells are produced by an adult human body every day! (this is about 25 million new cells per second) • These new cells are formed when older cells divide for growth, development, or repair ...
... • About 2 trillion cells are produced by an adult human body every day! (this is about 25 million new cells per second) • These new cells are formed when older cells divide for growth, development, or repair ...
CHAPTER 12 GENETICS
... Eukaryotic chromosomes • The chromosomes carry the genetic information. • Eukaryotic chromosomes contain DNA and protein • The chromosomes are so named because they may be stained by certain dyes • When cells are not dividing, the genetic material is decondensed and is called chromatin • When cells ...
... Eukaryotic chromosomes • The chromosomes carry the genetic information. • Eukaryotic chromosomes contain DNA and protein • The chromosomes are so named because they may be stained by certain dyes • When cells are not dividing, the genetic material is decondensed and is called chromatin • When cells ...
Meiosis and mitosis
... end of each chapter covered • As stated on the website you need to present a doctor’s note to the instructor within 48h of missing a quiz or a test • If you have a legitimate reason for missing a ...
... end of each chapter covered • As stated on the website you need to present a doctor’s note to the instructor within 48h of missing a quiz or a test • If you have a legitimate reason for missing a ...
Cell Division
... daughter cells enter interphase, during which they grow and prepare for another division. In plants, cell division is mostly confined to specific regions, called meristems. For example, plant stems grow in length by cell division at the tips, or shoot apical meristems. Mitosis provides the mechanism ...
... daughter cells enter interphase, during which they grow and prepare for another division. In plants, cell division is mostly confined to specific regions, called meristems. For example, plant stems grow in length by cell division at the tips, or shoot apical meristems. Mitosis provides the mechanism ...
Mitosis and Cell Division
... Mitosis and Cell Division • Gene: Segment of DNA that represents all information for a product as well as when and where to make the product • Allele: A version (or flavor) of a gene; two alleles of the same gene my differ by a nucleotide or dozens of them--generally a ...
... Mitosis and Cell Division • Gene: Segment of DNA that represents all information for a product as well as when and where to make the product • Allele: A version (or flavor) of a gene; two alleles of the same gene my differ by a nucleotide or dozens of them--generally a ...
Review #2
... population - only through mutations • Fast and energy efficient • Eg. budding, binary fission ...
... population - only through mutations • Fast and energy efficient • Eg. budding, binary fission ...
Section A: Eukaryotic Chromatin Structure
... • While the single circular chromosome of bacteria is coiled and looped in a complex, but orderly manner, eukaryotic chromatin is far more complex. • Eukaryotic DNA is precisely combined with large amounts of protein. • During interphase of the cell cycle, chromatin fibers are usually highly extende ...
... • While the single circular chromosome of bacteria is coiled and looped in a complex, but orderly manner, eukaryotic chromatin is far more complex. • Eukaryotic DNA is precisely combined with large amounts of protein. • During interphase of the cell cycle, chromatin fibers are usually highly extende ...
Nerve activates contraction
... • While the single circular chromosome of bacteria is coiled and looped in a complex, but orderly manner, eukaryotic chromatin is far more complex. • Eukaryotic DNA is precisely combined with large amounts of protein. • During interphase of the cell cycle, chromatin fibers are usually highly extende ...
... • While the single circular chromosome of bacteria is coiled and looped in a complex, but orderly manner, eukaryotic chromatin is far more complex. • Eukaryotic DNA is precisely combined with large amounts of protein. • During interphase of the cell cycle, chromatin fibers are usually highly extende ...
printer-friendly sample test questions
... A. two daughter cells with half the number of chromosomes as the parent cell. B. two daughter cells with the same number of chromosomes as the parent cell. C. four daughter cells with half the number of chromosomes as the parent cell. D. four daughter cells with the same number of chromosomes as the ...
... A. two daughter cells with half the number of chromosomes as the parent cell. B. two daughter cells with the same number of chromosomes as the parent cell. C. four daughter cells with half the number of chromosomes as the parent cell. D. four daughter cells with the same number of chromosomes as the ...
VI Fill in the blank
... II. Fill in the blanks: 1) Karyokinesis means division of ____________. 2) The spindle fibres are made up of ______________. 3) The type of cell division that takes place in Androecium and gynoecium is ______. 4) The chromatids are attached to each other at ____________. 5) The process by which game ...
... II. Fill in the blanks: 1) Karyokinesis means division of ____________. 2) The spindle fibres are made up of ______________. 3) The type of cell division that takes place in Androecium and gynoecium is ______. 4) The chromatids are attached to each other at ____________. 5) The process by which game ...
Polygenic Traits
... • Mothers older than 35 have rapidly increasing risk. – 95% of non-disjunctions occur with the ovum. • Most Down syndrome babies are born to women younger than 35 because those are the ages that most women have children. • Dogma: all your oocytes are present at birth; meiosis is arrested in Prophase ...
... • Mothers older than 35 have rapidly increasing risk. – 95% of non-disjunctions occur with the ovum. • Most Down syndrome babies are born to women younger than 35 because those are the ages that most women have children. • Dogma: all your oocytes are present at birth; meiosis is arrested in Prophase ...
Mitosis Meiosis Review
... 14. What are the cells called that do not participate in reproduction called? 15. What are sex cells called? 16. What is the period that prepares for mitosis called? 17. Name 2 differences between meiosis and mitosis. 20. What is the process (not phase) by which a cell’s cytoplasm divides to form tw ...
... 14. What are the cells called that do not participate in reproduction called? 15. What are sex cells called? 16. What is the period that prepares for mitosis called? 17. Name 2 differences between meiosis and mitosis. 20. What is the process (not phase) by which a cell’s cytoplasm divides to form tw ...
Chapter 15 - Advances in Molecular Genetics
... 6. In the classroom is a poster depicting the diseases associated with a specific chromosome out of the 24 different chromosomes (1-22 autosomes and an X and Y chromosome). Which chromosome has the most diseases associated with it? 7. What is the srY gene? What is its function in the human body? In ...
... 6. In the classroom is a poster depicting the diseases associated with a specific chromosome out of the 24 different chromosomes (1-22 autosomes and an X and Y chromosome). Which chromosome has the most diseases associated with it? 7. What is the srY gene? What is its function in the human body? In ...
Nondisjunction
... nondisjunction has led us to understand the Y chromosome in importance of the ____________ determination of the sex of an individual. This has recently been determined to be true because the Y chromosome has been found to have a gene that turns on __________ ...
... nondisjunction has led us to understand the Y chromosome in importance of the ____________ determination of the sex of an individual. This has recently been determined to be true because the Y chromosome has been found to have a gene that turns on __________ ...
Set 2
... DNA code may not be exactly the same in both locations Offspring inherit genes from both parents. The genes exist in an array of possible forms that differ as to their exact DNA sequence. These variations in forms are called alleles. The ultimate combination of the chromosome pair is what makes th ...
... DNA code may not be exactly the same in both locations Offspring inherit genes from both parents. The genes exist in an array of possible forms that differ as to their exact DNA sequence. These variations in forms are called alleles. The ultimate combination of the chromosome pair is what makes th ...
14-3 Human Molecular Genetics
... Give two reasons why Pedigree Charts cannot track all human disorders: ...
... Give two reasons why Pedigree Charts cannot track all human disorders: ...
Mendelian Genetics - Mrs. Cindy Williams Biology website
... – Genes on the same chromosome are not always linked. – Crossing-over sometimes separates linked genes to form new allele combinations. – This allows for greater genetic diversity. ...
... – Genes on the same chromosome are not always linked. – Crossing-over sometimes separates linked genes to form new allele combinations. – This allows for greater genetic diversity. ...
Dragon Meiosis
... simulate the process of crossing-over that occurs during prophase I. Select one sister chromatid from each of the homologous chromosomes in pair one and cut them in half. Now take each piece and tape it to the piece from the opposite chromatid. Reassemble the chromatids into the homologous chromosom ...
... simulate the process of crossing-over that occurs during prophase I. Select one sister chromatid from each of the homologous chromosomes in pair one and cut them in half. Now take each piece and tape it to the piece from the opposite chromatid. Reassemble the chromatids into the homologous chromosom ...
Bacteria cells reproduce differently from other single celled
... Scientists have completed the main phase of the Human Genome Project. What have they accomplished through this project? a. They used a single cell from one organism to create an identical organism. b. They created a single pedigree for every genetic disorder. c. They created DNA synthetically in a ...
... Scientists have completed the main phase of the Human Genome Project. What have they accomplished through this project? a. They used a single cell from one organism to create an identical organism. b. They created a single pedigree for every genetic disorder. c. They created DNA synthetically in a ...
Chromosome
A chromosome (chromo- + -some) is a packaged and organized structure containing most of the DNA of a living organism. It is not usually found on its own, but rather is complexed with many structural proteins called histones as well as associated transcription (copying of genetic sequences) factors and several other macromolecules. Two ""sister"" chromatids (half a chromosome) join together at a protein junction called a centromere. Chromosomes are normally visible under a light microscope only when the cell is undergoing mitosis. Even then, the full chromosome containing both joined sister chromatids becomes visible only during a sequence of mitosis known as metaphase (when chromosomes align together, attached to the mitotic spindle and prepare to divide). This DNA and its associated proteins and macromolecules is collectively known as chromatin, which is further packaged along with its associated molecules into a discrete structure called a nucleosome. Chromatin is present in most cells, with a few exceptions - erythrocytes for example. Occurring only in the nucleus of eukaryotic cells, chromatin composes the vast majority of all DNA, except for a small amount inherited maternally which is found in mitochondria. In prokaryotic cells, chromatin occurs free-floating in cytoplasm, as these cells lack organelles and a defined nucleus. The main information-carrying macromolecule is a single piece of coiled double-stranded DNA, containing many genes, regulatory elements and other noncoding DNA. The DNA-bound macromolecules are proteins, which serve to package the DNA and control its functions. Chromosomes vary widely between different organisms. Some species such as certain bacteria also contain plasmids or other extrachromosomal DNA. These are circular structures in the cytoplasm which contain cellular DNA and play a role in horizontal gene transfer.Compaction of the duplicated chromosomes during cell division (mitosis or meiosis) results either in a four-arm structure (pictured to the right) if the centromere is located in the middle of the chromosome or a two-arm structure if the centromere is located near one of the ends. Chromosomal recombination during meiosis and subsequent sexual reproduction plays a vital role in genetic diversity. If these structures are manipulated incorrectly, through processes known as chromosomal instability and translocation, the cell may undergo mitotic catastrophe and die, or it may unexpectedly evade apoptosis leading to the progression of cancer.In prokaryotes (see nucleoids) and viruses, the DNA is often densely packed and organized. In the case of archaea by homologs to eukaryotic histones, in the case of bacteria by histone-like proteins. Small circular genomes called plasmids are often found in bacteria and also in mitochondria and chloroplasts, reflecting their bacterial origins.