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4.3 Samson
4.3 Samson

... Dominant Allele: An allele that has the same effect on phenotype whether it is present in the homozygous or heterozygous state Recessive Allele: An allele that only has an effect on the phenotype when present in homozygous state. Codominant Allele: Pairs of alleles that both affect the phenotype whe ...
Meiosis - My Haiku
Meiosis - My Haiku

... produces gametes containing half the number of chromosomes as the parent’s body cell. Meiosis is actually two separate divisions. The first division is meiosis I, and the second is meiosis II. The whole process begins with one diploid cell and ends with four haploid cells. The haploid cells are game ...
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Name

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e. dominant relationships
e. dominant relationships

... properly during meiosis I or the sister chromosomes fail to separate in meiosis II.  The result is an abnormal chromosome number, called aneuploidy (2n+1 or 2n –1). Polyploidy  More than two complete chromosome sets, for example, Triploidy: 3n and tetraploidy: 4n.  Polyploidy occurs when there is ...
Heredity Part 2 - Pima Community College
Heredity Part 2 - Pima Community College

... the fact that the recessive gene has a loss of some function that the dominant gene has. For example, in the case of ABO blood types, the O type is recessive because it does not produce any antigens or antibodies, whereas A and B types (which are co-dominant) do. Or, in the case of eye color, there ...
Variation and the Monohybrid Cross
Variation and the Monohybrid Cross

... Significance of meiosis Allele: gene ...
Module - Discovering the Genome
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(3) Ch 6 Review Game

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Chromosomal Basis of Inheritance
Chromosomal Basis of Inheritance

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51. What is the purpose of oxygen in aerobic respiration? a. Oxygen
51. What is the purpose of oxygen in aerobic respiration? a. Oxygen

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AP Review II Answer Key

... d. There are insufficient amounts of coenzyme A e. Photosynthesis cannot function at night 62. As levels of O2 increase beyond 5%, the amounts of CO2 released increase. This is probably a direct result of a. An increase in glycolytic activity b. A greater availability of appropriate enzymes c. An in ...
MS Word document, click here
MS Word document, click here

... IV. Review: Chromosomes a. Chromosomes are the structures that develop during cell division as DNA forms into tight coils. b. Humans have 46 chromosomes (gorillas and chimps have 48) c. Chromosomes generally occur in pairs d. There are two basic types of chromosomes, autosomes and sex chromosomes 1) ...
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Human Genetic Disorders PPT

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1. Explain why organisms only reproduce their own
1. Explain why organisms only reproduce their own

... Independent assortment – orientation of the chromosome pairs is random at the poles (meiosis I) - each homologous pair orients independently of the others at metaphase I Crossing over – exchange of genetic material between homologues (prophase I) - occurs when homologous portions of 2 nonsister chro ...
Guided Notes-Genetics
Guided Notes-Genetics

... i. All ____________________ carry an ___________chromosome ii. _______________________ are XX; ______________________ carry XY iii. ______________________________________________________________________________ ______________________________________________________________________________ __________ ...
Biology 3rd Quarter Exam Review Study Guide I 4-6-09
Biology 3rd Quarter Exam Review Study Guide I 4-6-09

... **Answer these questions and submit them to Moodle by the end of the hour. Answers must be in complete sentences in order to receive credit. Use your study guides, the book, internet and old quizzes to find these answers. 1. Human body cells have 46 chromosomes. From a chromosome number standpoint e ...
Glossary - Bioethics Advisory Committee
Glossary - Bioethics Advisory Committee

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GENETIC PRINCIPLES
GENETIC PRINCIPLES

... such that all germ cells are either maternal or paternal in origin. B.  It predicts that no amount of cross breeding can accomplish more than the first cross, that there can be only four combinations in the offspring of a single set of parents, and offspring cannot inherit chromosomes (traits) from ...
Study Guide for Genetics Test #127
Study Guide for Genetics Test #127

... earlobes, they should both show free earlobes. However sometimes the environment and/or unknown factors influence how genes are expressed. For example, identical twins sometimes have slightly different traits even though they have exactly the same genes (for example, one has a cleft chin and the oth ...
Genetic Modification Regulations and Procedures
Genetic Modification Regulations and Procedures

... develop a method for constructing a chromosome map.  This map is an ordered list of the genetic loci along a particular chromosome. Copyright © 2002 Pearson Education, Inc., publishing as Benjamin Cummings ...
X - kendricknovak
X - kendricknovak

... colorblindness marries a female who is not colorblind but carries the (b) allele. Using a Punnett square, determine the genotypic and phenotypic probabilities for their potential offspring. ...
Chapter 11 Quiz
Chapter 11 Quiz

... 7. Use Figure 11±3 to answer the following question. If a pea plant that is heterozygous for round, yellow peas (RrYy) is crossed with a pea plant that is homozygous for round peas but heterozygous for yellow peas (RRYy), how many different phenotypes are their offspring expected to show? a. 2 b. 4 ...
Genes
Genes

... recessive trait. It is found on the X chromosome, not the Y. – We write the alleles this way: ►X¢ = colorblindness ►XC = normal The slash indicates it is a lower case letter so there is no confusion ...
geneticdiseases
geneticdiseases

... -You need 22+22 (44) distinct autosomes in each cell to function normally. -You need sex chromosomes X+X or X+Y in each cell to function normally. -In XX human females, one X is knocked out in every cell to compensate or balance gene dosage. The knockout is called a Barr Body, and the idea of X inac ...
Study Guide Genetics Final 2014
Study Guide Genetics Final 2014

... 2. How is an autosome different from a sex chromosome? 3. How is an X different from a y chromosome? 4. Use a Punnet square to show how gender is passed from parent to offspring. Which parent’s chromosome determines the sex of a child? Why? 5. Compare and contrast dominant and recessive alleles. Wha ...
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Karyotype



A karyotype (from Greek κάρυον karyon, ""kernel"", ""seed"", or ""nucleus"", and τύπος typos, ""general form"") is the number and appearance of chromosomes in the nucleus of a eukaryotic cell. The term is also used for the complete set of chromosomes in a species, or an individual organism.Karyotypes describe the chromosome count of an organism, and what these chromosomes look like under a light microscope. Attention is paid to their length, the position of the centromeres, banding pattern, any differences between the sex chromosomes, and any other physical characteristics. The preparation and study of karyotypes is part of cytogenetics. The study of whole sets of chromosomes is sometimes known as karyology. The chromosomes are depicted (by rearranging a photomicrograph) in a standard format known as a karyogram or idiogram: in pairs, ordered by size and position of centromere for chromosomes of the same size.The basic number of chromosomes in the somatic cells of an individual or a species is called the somatic number and is designated 2n. Thus, in humans 2n = 46. In the germ-line (the sex cells) the chromosome number is n (humans: n = 23).p28So, in normal diploid organisms, autosomal chromosomes are present in two copies. There may, or may not, be sex chromosomes. Polyploid cells have multiple copies of chromosomes and haploid cells have single copies.The study of karyotypes is important for cell biology and genetics, and the results may be used in evolutionary biology (karyosystematics) and medicine. Karyotypes can be used for many purposes; such as to study chromosomal aberrations, cellular function, taxonomic relationships, and to gather information about past evolutionary events.
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