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Cell Theory Quiz Study Guide Name
Cell Theory Quiz Study Guide Name

... 17. The order of the nitrogen bases on the DNA molecule is known as the genetic _______. 18. In 1952, Rosalind ____________ discovered DNA is 2 chains of molecules. 19. In 1953, using the above scientist’s research, _____________ and ____________ made a model of DNA. 20. A _____________________ is a ...
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History of Genetics

... • ___________ contains all the genetic instructions to create all the cells in your body. • What Does DNA stand For? ...
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... resistance (R) gene sequences of wild potato, tomato and pepper genomes (the SOLAR database) ...
YyRr - s3.amazonaws.com
YyRr - s3.amazonaws.com

... as cystic fibrosis and sickle-cell disease • In epistasis, a gene at one locus alters the phenotypic expression of a gene at a second locus • For example, in mice and many other mammals, coat color depends on two genes • One gene determines the pigment color (with alleles B for black and b for brown ...
Background Information
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... of the second chromosome, genes H to N, with different colors. ( Note: if you do not have enough different colors, feel free to use green stripes, green dots, red squiggles, etc. to differentiate the gene colors.) Now take a look at the point at which translocation has taken place. Genes F and G fro ...
Genetic Mapping in Drosophila melanogaster
Genetic Mapping in Drosophila melanogaster

... pioneered the use of the fruit fly, Drosophila melanogaster, as a model organism in genetic studies. Drosophila has a diploid chromosome number of eight, or four pairs of homologous chromosomes numbered 1 - 4. Chromosome 1 is the X chromosome (sex chromosome) and is responsible for sex determination ...
Genetics Unit: 1. Heredity- the passing of traits from parent to young
Genetics Unit: 1. Heredity- the passing of traits from parent to young

... Genetics- branch of Biology that studies heredity Genes- factors that control traits Genotype- genetic makeup (ex. TT, Tt or tt) Genotypic Ratio- the proportion of genotypes for a particular parental cross Traits- specific characteristics that vary from one individual to the next Alleles- different ...
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... The chromosomes on which genes are located can affect the expression of traits. ...
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Chromosomes-History-Structure
Chromosomes-History-Structure

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... 16. Match the following disease or disorders to their definitions. _____ 1. Huntington A. Sex-linked disorder where individuals do not produce the protein they need to clot. _____ 2. PKU (Phenylketonuria) B. Recessive disease caused by deletion of 3 bases in DNA. _____ 3. Tay Sachs C. Sex-linked dis ...
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Lesson 3. Genetic Disorders, Karyotypes - Blyth-Biology11

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...  caused by misrepair of broken chromosomes, improper recombination, or improper segregation of chromosomes during mitosis or meiosis Chromosome abnormalities can affect  Germ cell (constitutional)  Somatic cell 1. Variation in chromosome number polyploidy: extra sets of chromosomes  1-3% of huma ...
3. Chromosome Defects
3. Chromosome Defects

...  caused by misrepair of broken chromosomes, improper recombination, or improper segregation of chromosomes during mitosis or meiosis Chromosome abnormalities can affect  Germ cell (constitutional)  Somatic cell 1. Variation in chromosome number polyploidy: extra sets of chromosomes  1-3% of huma ...
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... replication but before the prophase. It is composed of two daughter chromatids joined at the centromere. The chromosome is super coiled by a factor around x16,000. The DNA molecule is about 1.8m long but is located in the nucleus which is only 10um in diameter! ...
the definitions of the following terms
the definitions of the following terms

...  The law of segregation and the law of independent assortment  The stages of the cell cycle in the correct order and what happens in each  That the new cells produced as a result of a mitotic division are identical to the parental cells  That the new cells produced as a result of a meiotic divis ...
the definitions of the following terms:
the definitions of the following terms:

...  The law of segregation and the law of independent assortment  The stages of the cell cycle in the correct order and what happens in each  That the new cells produced as a result of a mitotic division are identical to the parental cells  That the new cells produced as a result of a meiotic divis ...
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How many chromosomes do humans have?

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Chapter 13
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Topic 4: Genetics - Peoria Public Schools
Topic 4: Genetics - Peoria Public Schools

... 2. A gene is a section of DNA that controls a specific characteristic in an organism. 3. An allele is a specific form of a gene, differing from other alleles by one or more base differences in the DNA sequence. 4. Different alleles for the same gene all occupy the same locus on a chromosome. 5. Geno ...
Mitosis (Chapter 12)
Mitosis (Chapter 12)

... Thomas Hunt Morgan studied sex-linked eye color in Drosophila melanogaster flies, where red eyes was the dominant wild type to white eyes Females have 2 X chromosomes, 1 maternal 1 paternal Males have 1 X and 1 Y chromosome. Sperm carry only one type Offspring’s sex is determined by the type of sper ...
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X-inactivation



X-inactivation (also called lyonization) is a process by which one of the two copies of the X chromosome present in female mammals is inactivated. The inactive X chromosome is silenced by its being packaged in such a way that it has a transcriptionally inactive structure called heterochromatin. As nearly all female mammals have two X chromosomes, X-inactivation prevents them from having twice as many X chromosome gene products as males, who only possess a single copy of the X chromosome (see dosage compensation). The choice of which X chromosome will be inactivated is random in placental mammals such as humans, but once an X chromosome is inactivated it will remain inactive throughout the lifetime of the cell and its descendants in the organism. Unlike the random X-inactivation in placental mammals, inactivation in marsupials applies exclusively to the paternally derived X chromosome.
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