File - Biology
... C. Body cells are diploid; gametes are haploid a. fertilization between egg and sperm occurs in sexual reproduction b. diploid (2n) cells have two copies of every chromosome i. body cells are diploid ii. half the chromosomes come from each parent c. haploid (n) cells have one copy of every chromosom ...
... C. Body cells are diploid; gametes are haploid a. fertilization between egg and sperm occurs in sexual reproduction b. diploid (2n) cells have two copies of every chromosome i. body cells are diploid ii. half the chromosomes come from each parent c. haploid (n) cells have one copy of every chromosom ...
Brooker Chapter 8
... One of the X’s is lost during the first mitotic division This produces an XX cell and an X0 cell ...
... One of the X’s is lost during the first mitotic division This produces an XX cell and an X0 cell ...
meiosis - Cloudfront.net
... AND PATERNAL CHROMOSOMES IN GAMETES, WHERE n IS THE HAPLOID # • IN HUMANS, THE POSSIBLE COMBINATIONS WOULD BE 223, OR ABOUT 8 MILLION • THUS, EACH HUMAN GAMETE CONTAINS ONE OF EIGHT MILLION POSSIBLE ASSORTMENTS OF CHROMOSOMES ...
... AND PATERNAL CHROMOSOMES IN GAMETES, WHERE n IS THE HAPLOID # • IN HUMANS, THE POSSIBLE COMBINATIONS WOULD BE 223, OR ABOUT 8 MILLION • THUS, EACH HUMAN GAMETE CONTAINS ONE OF EIGHT MILLION POSSIBLE ASSORTMENTS OF CHROMOSOMES ...
Document
... Chromosomes fail to separate properly during meiosis Condition in which an organism has extra sets of chromosomes Mutations that affect the reproductive cells Mutations that affect the body cells Which (#3 or #4 from above) are not inheritable Mutations that involve segment of chromosomes, whole chr ...
... Chromosomes fail to separate properly during meiosis Condition in which an organism has extra sets of chromosomes Mutations that affect the reproductive cells Mutations that affect the body cells Which (#3 or #4 from above) are not inheritable Mutations that involve segment of chromosomes, whole chr ...
The plant cell that is responsible for asexual reproduction is called
... A growth hormone is added to some varieties of fish b) “Antifreeze” gene is added to salmon and halibut c) A disease resistance gene is added to some varieties of fish d) All of the above ...
... A growth hormone is added to some varieties of fish b) “Antifreeze” gene is added to salmon and halibut c) A disease resistance gene is added to some varieties of fish d) All of the above ...
Meiosis & Mitosis
... Why is meiosis important for sexual reproduction? A. To decrease the genetic variation in the daughter cells. B. To produce daughter cells that are identical to the parent. C. To produce daughter cells with half the number of chromosomes as the parent. D. To increase the risk of genetic disorders i ...
... Why is meiosis important for sexual reproduction? A. To decrease the genetic variation in the daughter cells. B. To produce daughter cells that are identical to the parent. C. To produce daughter cells with half the number of chromosomes as the parent. D. To increase the risk of genetic disorders i ...
Cells - Newton County Schools
... Cell Wall – Protects cell and gives added support *only found in plant, bacteria and fungal cells Chloroplasts – Organelle that contains chlorophyll *site of ...
... Cell Wall – Protects cell and gives added support *only found in plant, bacteria and fungal cells Chloroplasts – Organelle that contains chlorophyll *site of ...
New and Improved GeneticsJeopardy-1415
... 1. Sexual 2. Gametes (animals and plants) 3. Prophase, metaphase, anaphase, telophase…twice! ...
... 1. Sexual 2. Gametes (animals and plants) 3. Prophase, metaphase, anaphase, telophase…twice! ...
Non-Disjunction & Aneuploidy
... occasionally during meiosis in which a pair of chromosomes fail to separate so that the resulting germ (sex) cell has either too many or too few chromosomes ...
... occasionally during meiosis in which a pair of chromosomes fail to separate so that the resulting germ (sex) cell has either too many or too few chromosomes ...
Sex chromosomes - Perry Local Schools
... Sex chromosomes – determine the sex of an organism • Sex chromosomes, X and Y, determine gender in mammals. • May also carry genes for other characteristics • 2 sex chromosomes • Normal Females XX • Normal males XY Autosomes – all of the other chromosomes •44 autosomes •Two sets of each autosome •Re ...
... Sex chromosomes – determine the sex of an organism • Sex chromosomes, X and Y, determine gender in mammals. • May also carry genes for other characteristics • 2 sex chromosomes • Normal Females XX • Normal males XY Autosomes – all of the other chromosomes •44 autosomes •Two sets of each autosome •Re ...
Chromosomes and Mutations Chromosomes and
... • Translocations: part breaks off and is added into a different chromosome ...
... • Translocations: part breaks off and is added into a different chromosome ...
In-class Exercise Biology 101 Discussion: During lecture on 5/22/08
... reduce levels of recombination between homologues? 2. Many species can reproduce either asexually or sexually. It is often when the environment changes in some way that is unfavorable to a population that the organisms begin to reproduce sexually. Speculate about the evolutionary significance of thi ...
... reduce levels of recombination between homologues? 2. Many species can reproduce either asexually or sexually. It is often when the environment changes in some way that is unfavorable to a population that the organisms begin to reproduce sexually. Speculate about the evolutionary significance of thi ...
Heredity Passing It On pp1 and 2
... to replace old or dying cells throughout our bodies. These cells need to be exactly like their parent cells so they are able to continue doing their jobs. If offspring were produced through mitosis, as they often are in single-celled organisms, each offspring would be identical to its parent. In sex ...
... to replace old or dying cells throughout our bodies. These cells need to be exactly like their parent cells so they are able to continue doing their jobs. If offspring were produced through mitosis, as they often are in single-celled organisms, each offspring would be identical to its parent. In sex ...
Cell Division MAstery Assignment Key
... If a parent cell has 24 chromosomes and undergoes meiosis, how many chromosomes will be found in each new daughter cell? ...
... If a parent cell has 24 chromosomes and undergoes meiosis, how many chromosomes will be found in each new daughter cell? ...
23deluxe
... physically separated from each other. • A population can colonize a new habitat. • A new physical barrier can split a widespread population into two or more isolated groups. ...
... physically separated from each other. • A population can colonize a new habitat. • A new physical barrier can split a widespread population into two or more isolated groups. ...
Mendel`s Laws of heredity
... Number of Chromosomes in a Cell Haploid: contains one set of chromosomes N = 23 Gamete cells Diploid: contains two sets of chromosomes One from each parent 2n = 2(23) = 46 Humans (except for gametes) Some plants and animals ...
... Number of Chromosomes in a Cell Haploid: contains one set of chromosomes N = 23 Gamete cells Diploid: contains two sets of chromosomes One from each parent 2n = 2(23) = 46 Humans (except for gametes) Some plants and animals ...
Document
... chromosomes and crossing over. *No daughter cells formed during meiosis are genetically identical to either mother or father *During sexual reproduction, fusion of the unique haploid gametes produces truly unique offspring. ...
... chromosomes and crossing over. *No daughter cells formed during meiosis are genetically identical to either mother or father *During sexual reproduction, fusion of the unique haploid gametes produces truly unique offspring. ...
Worksheet for Morgan/Carter Laboratory #7 “Mitosis and Meiosis”
... What would be the consequences in successive generations of offspring if the chromosome number were not reduced during meiosis? ...
... What would be the consequences in successive generations of offspring if the chromosome number were not reduced during meiosis? ...
What to know and be able to do
... 4. How do the cells that result from mitosis and meiosis differ? How are they the same? 5. Define and distinguishe between the terms diploid and haploid. What are the diploid and haploid numbers for humans? Given a type of cell, decide whether it is haploid or diploid and how many chromosomes it has ...
... 4. How do the cells that result from mitosis and meiosis differ? How are they the same? 5. Define and distinguishe between the terms diploid and haploid. What are the diploid and haploid numbers for humans? Given a type of cell, decide whether it is haploid or diploid and how many chromosomes it has ...
The genetics and bioinformatics of haploid selection We are looking
... genetics and bioinformatics to perform a project under the supervision of Simone Immler (http://www.ieg.uu.se/evolutionary-biology/immler/) and Douglas Scofield at the Department of Ecology and Genetics/Evolutionary Biology. Project background: Evolutionary conflicts resulting from genetic differenc ...
... genetics and bioinformatics to perform a project under the supervision of Simone Immler (http://www.ieg.uu.se/evolutionary-biology/immler/) and Douglas Scofield at the Department of Ecology and Genetics/Evolutionary Biology. Project background: Evolutionary conflicts resulting from genetic differenc ...
Ploidy
Ploidy is the number of sets of chromosomes in a cell. Usually a gamete (sperm or egg, which fuse into a single cell during the fertilization phase of sexual reproduction) carries a full set of chromosomes that includes a single copy of each chromosome, as aneuploidy generally leads to severe genetic disease in the offspring. The gametic or haploid number (n) is the number of chromosomes in a gamete. Two gametes form a diploid zygote with twice this number (2n, the zygotic or diploid number) i.e. two copies of autosomal chromosomes. For humans, a diploid species, n = 23. A typical human somatic cell contains 46 chromosomes: 2 complete haploid sets, which make up 23 homologous chromosome pairs.Because chromosome number is generally reduced only by the specialized process of meiosis, the somatic cells of the body inherit and maintain the chromosome number of the zygote. However, in many situations somatic cells double their copy number by means of endoreduplication as an aspect of cellular differentiation. For example, the hearts of two-year-old children contain 85% diploid and 15% tetraploid nuclei, but by 12 years of age the proportions become approximately equal, and adults examined contained 27% diploid, 71% tetraploid and 2% octaploid nuclei.Cells are described according to the number of sets present (the ploidy level): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is frequently used to describe cells with three or more sets of chromosomes (triploid or higher ploidy).