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Mitosis Matching Activity
Mitosis Matching Activity

... •Nucleus is clearly defined •DNA has duplicated •Gene action take place (animal cells have centrioles) •Replicated centrioles move toward the opposite ends (poles) •Nuclear material coils up to form chromosomes •Nuclear membrane breaks down •Spindle forms •Spindle is fully formed •Chromosomes seen c ...
SBI 3U – Genetic Continuity
SBI 3U – Genetic Continuity

... a diploid chromosome number? B d) In which stage(s) would you find a cell with a haploid chromosome number? C 3. The figure below shows plant and animal cells during cell division. Identify each cell as either a plant or an animal cell. Identify the phases of cell division. a) Plant , Metaphase b) P ...
Notes
Notes

... A) Members of one pair of factors separate independently of members of another pair of factors. B) Therefore, all possible combinations of factors can occur in the gametes. 3. Crossing over of Homologous resulting in gene recombination A) During Meiosis I (prophase I), two of the four chromatids (on ...
08_Lecture_Presentation
08_Lecture_Presentation

... homologous pairs does that represent? – If there is one pair of sex chromosomes, how many pairs of autosomes are found in humans? Copyright © 2009 Pearson Education, Inc. ...
ch 8 notes
ch 8 notes

... 8.12 Chromosomes are matched in homologous pairs  Somatic cells have pairs of homologous chromosomes, receiving one member of each pair from each parent  Homologous chromosomes are matched in ...
Variation and Evolution
Variation and Evolution

... the structure or number of one or more chromosomes. e.g. Down’s syndrome is caused by three number 21 chromosomes. The extra chromosome comes from the mother. It causes too much of a brain enzyme to be produced and causes the brain to form incorrectly. ...
Name Form - Pukekohe High School
Name Form - Pukekohe High School

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Document
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Biology-Chapter-12
Biology-Chapter-12

...  22 pairs of chromosomes are autosomes-they all look alike  The 23rd pair is the sex chromosome –indicating the sex of the organism Sex-linked traits-Traits are contained on the sex determined pair of chromosomes  Thomas Hunt Morgan (1910) discovered that fruit flies had sex-linked traits  Most ...
Heredity – the passing of traits from parents to offspring
Heredity – the passing of traits from parents to offspring

... DNA – cellular material with all the information about what traits a living thing may have Chromosome – thread like structures that organize DNA, each chromosome is a long DNA molecule (about 1.5 meters!) Gene – part of the DNA molecule that carries a specific trait (composed of 2 alleles) (ex. flow ...
Chapter 8 Review Sheet
Chapter 8 Review Sheet

... 8.14 List the phases of meiosis I and meiosis II, and describe the events characteristic of each phase. Recognize the phases of meiosis from diagrams or micrographs. 8.15 Describe key differences between mitosis and meiosis. Explain how the result of meiosis differs from the result of mitosis. 8.16– ...
Name - Humble ISD
Name - Humble ISD

...  Female gametes are ______ cells made in the _________ in the process of meiosis  Male gametes are _________cells made in the __________ in the process of meiosis  Egg cells can only contain an X chromosome  Sperm cell produced has a ____% chance of containing a ____ and a _____% chance of conta ...
Genetics
Genetics

... I (would/would not) have my child tested for the speed gene because… I (would/would not) want to know if I have the ApoE4 gene because… After reading this article, I believe elite athletes are a result of… The most interesting thing I learned from this article was… ...
Meiosis
Meiosis

... The diploid number of chromosomes is sometimes represented by the symbol 2N. For the fruit fly, the diploid number is 8, which can be written as 2N = 8, where N represents twice the number of chromosomes in a sperm or egg cell. These two sets of chromosomes are homologous, meaning that each of the f ...
1903. - Sutton, Walter S. The chromosomes in heredity. Biological
1903. - Sutton, Walter S. The chromosomes in heredity. Biological

... The constant size differences observed in the chromosomes of Brachystola early led me to the suspicion, which, however, a study of spermatogenesis alone could not confirm, that the individual chromosomes of the reduced series play different roles in development. The confirmation of this surmise appe ...
BHS 116: Physiology Date: 10/16/12, 1st hour Notetaker: Stephanie
BHS 116: Physiology Date: 10/16/12, 1st hour Notetaker: Stephanie

... o Chromosome 22 is the shortest - In the normal condition, each chromosome is paired (diploid) o Haploid = n (1 of each chromosome) = 23 o Diploid = 2n (2 of each chromosome) = 46 - The normal number of chromosomes if 46 (23x2) o Get one of each from each parent o 22 pairs of autosomes o 1 pair of s ...
meiosis
meiosis

... 8.12 Chromosomes are matched in homologous pairs  Somatic cells have pairs of homologous chromosomes, receiving one member of each pair from each parent  Homologous chromosomes are matched in ...
Cell Cycle 1
Cell Cycle 1

... 1. To accurately transmit the genetic information! 2. To maintain normal ploidy; i.e. diploidy! ...
Ch. 6/7 Objectives 1. Identify the different phases of Mitosis and
Ch. 6/7 Objectives 1. Identify the different phases of Mitosis and

... Explain what a karyotype is. How can you determine mistakes and sex through a karyotype? 12. Make a Punnett Square to illustrate the probability of having a boy or girl. 13. Make a pedigree, with 10 individuals, for one trait. Make a key and include ALL possible genotypes for each individual. ...
Human Heredity Ch. 14
Human Heredity Ch. 14

... Try this one on your own Question: What is the probability that a homozygous (normal vision) female and a colorblind male will have a girl who is colorblind (b = colorblind, B = ...
Objectives
Objectives

... Explain what a karyotype is. How can you determine mistakes and sex through a karyotype? 12. Make a Punnett Square to illustrate the probability of having a boy or girl. 13. Make a pedigree, with 10 individuals, for one trait. Make a key and include ALL possible genotypes for each individual. ...
Genes - Unit3and4Biology
Genes - Unit3and4Biology

...  This allows genes to be mixed and hence allow for greater genetic variation of offspring.  The last type of variation is mutation. To be inherited the mutation must occur in the gonads. Somatic cell mutations are not inherited. ...
Zoo/Bot 3333
Zoo/Bot 3333

... diversity has functioned inappropriately; d) all of the above; e) none of the above. Questions 6-8 pertain to the following. Mr. and Mrs. Simpson have not yet been able to produce a viable child. They have had two miscarriages that occurred very early during pregnancy, and one child who died in uter ...
Final Review Game
Final Review Game

... (because females can only pass on an X chromosome. Males can pass on either an X or a Y, and whichever chromosome the male passes on will determine the sex) ...
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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).
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