Lecture 4 pdf
... - low (incomplete) penetrance some people with a particular genotype do not show the expected phenotype 60% with Aa show expected phenotype (ie allele is penetrant in these people) 40% with Aa do not show expected phenotype (ie. allele is not penetrant in these people) Penetrance of this allele = 60 ...
... - low (incomplete) penetrance some people with a particular genotype do not show the expected phenotype 60% with Aa show expected phenotype (ie allele is penetrant in these people) 40% with Aa do not show expected phenotype (ie. allele is not penetrant in these people) Penetrance of this allele = 60 ...
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chapt16_lecture_edited [Compatibility Mode]
... A tall pea plant could be either TT or Tt Cross unknown individual to a homozygous recessive individual ...
... A tall pea plant could be either TT or Tt Cross unknown individual to a homozygous recessive individual ...
Meosis Definitions – Let`s talk about sex
... Within each individual in a species, every somatic cell (not a sex cell) contains the same number of chromosomes as every other. Humans (and most other animals) are diploid organisms meaning that each cell contains two complete chromosome sets. ...
... Within each individual in a species, every somatic cell (not a sex cell) contains the same number of chromosomes as every other. Humans (and most other animals) are diploid organisms meaning that each cell contains two complete chromosome sets. ...
Heredity
... Independent assortment—multiple traits, seed shape and seed color Mendel followed two traits together to see if they influenced each other. Vertically at left, the phenotypic outcomes into the F2 generation are followed for seed shape—round (dominant) and wrinkled (recessive); and seed color—yellow ...
... Independent assortment—multiple traits, seed shape and seed color Mendel followed two traits together to see if they influenced each other. Vertically at left, the phenotypic outcomes into the F2 generation are followed for seed shape—round (dominant) and wrinkled (recessive); and seed color—yellow ...
1-2._Medical_Genetics
... Small skin folds at the inner corners of the eyes. Excessive space between first and second toe. In addition, down syndrome always involves some degree of mental retardation, from mild to severe. In most cases, the mental retardation is mild to moderate. ...
... Small skin folds at the inner corners of the eyes. Excessive space between first and second toe. In addition, down syndrome always involves some degree of mental retardation, from mild to severe. In most cases, the mental retardation is mild to moderate. ...
Cytogenetics
... Early-replicating and GC rich region. In prokaryotes, euchromatin is the only form of chromatin present. ...
... Early-replicating and GC rich region. In prokaryotes, euchromatin is the only form of chromatin present. ...
lab9 - Java JAVAC
... polygenic inheritance, which occurs when multiple genes interact to produce a phenotype. Eye color was believed to be a strict dominant-recessive trait but we now know that it is the result of interactions of many genespolygenic. (other examples include height and skin color) ...
... polygenic inheritance, which occurs when multiple genes interact to produce a phenotype. Eye color was believed to be a strict dominant-recessive trait but we now know that it is the result of interactions of many genespolygenic. (other examples include height and skin color) ...
Cellular Reproduction
... a single cell. To obtain it, the cell is stained, then a picture is taken of it through a microscope just before cell division, when the chromosomes are easiest to see. ...
... a single cell. To obtain it, the cell is stained, then a picture is taken of it through a microscope just before cell division, when the chromosomes are easiest to see. ...
4.3 Theoretical Genetics Define the following: Genotype Gene
... b. Annotate the diagram to distinguish between the X and Y chromosomes. ...
... b. Annotate the diagram to distinguish between the X and Y chromosomes. ...
Genetics
... Down Syndrome – A person has some degree of mental retardation and heart problems. People with Down Syndrome have cells with an extra copy of Chromosome 21 because chromosomes fail to separate properly during meiosis. Duschenne Muscular Dystrophy – The gene for making the protein dystrophin is a ...
... Down Syndrome – A person has some degree of mental retardation and heart problems. People with Down Syndrome have cells with an extra copy of Chromosome 21 because chromosomes fail to separate properly during meiosis. Duschenne Muscular Dystrophy – The gene for making the protein dystrophin is a ...
Chapter 11 - Chromosome Mutations
... In polyploids x is not equivalent to n (see table 8-1) x= a set of chromsomes with one member of all homologous pairs example - wheat is a hexaploid (6x) = 42 chromosomes (x = 7) - haploid number (chromosomes in gamete) = 21 Examples of Changes in Ploidy ...
... In polyploids x is not equivalent to n (see table 8-1) x= a set of chromsomes with one member of all homologous pairs example - wheat is a hexaploid (6x) = 42 chromosomes (x = 7) - haploid number (chromosomes in gamete) = 21 Examples of Changes in Ploidy ...
No Slide Title
... X and a Y, (so they are genotypically MALES (!)) but they have inherited the recessive sex-linked allele conferring insensitivity to androgens (male hormones). http://www.cbs.dtu.dk/dave/roanoke/bio101ch15.htm ...
... X and a Y, (so they are genotypically MALES (!)) but they have inherited the recessive sex-linked allele conferring insensitivity to androgens (male hormones). http://www.cbs.dtu.dk/dave/roanoke/bio101ch15.htm ...
Genetics
... ☺ Locus: specific site of a gene on the chromosome. Since the chromosomes exist in pairs, genes are also paired. ☺ Alleles: alternate forms of a gene can occupy the same locus (homo, hetero) ☺ Recessive gene: expressed only when homozygous ☺ Dominant gene: homo or hetero or co☺ Sex-linked gene: X, r ...
... ☺ Locus: specific site of a gene on the chromosome. Since the chromosomes exist in pairs, genes are also paired. ☺ Alleles: alternate forms of a gene can occupy the same locus (homo, hetero) ☺ Recessive gene: expressed only when homozygous ☺ Dominant gene: homo or hetero or co☺ Sex-linked gene: X, r ...
Unit III
... A xy male gives ether an X-chromosomes or a Y chromosome to the sperm, which combines with an ovum containing an X chromosome from an XX female. 3. - The offspring’s sex is determine at conception by whether the sperm carries X or Y. b) Sex- linked genes have unique patterns of inheritance. Figure 1 ...
... A xy male gives ether an X-chromosomes or a Y chromosome to the sperm, which combines with an ovum containing an X chromosome from an XX female. 3. - The offspring’s sex is determine at conception by whether the sperm carries X or Y. b) Sex- linked genes have unique patterns of inheritance. Figure 1 ...
The human genome
... There are two kinds of distance metric for chromosome. Physical distances are measured in terms of number of base pairs (abbreviated as bp) Between two points. The units for physical distances are bp and kb (1000 bp). Genetic distances are defined as the expected numbers of crossovers between two p ...
... There are two kinds of distance metric for chromosome. Physical distances are measured in terms of number of base pairs (abbreviated as bp) Between two points. The units for physical distances are bp and kb (1000 bp). Genetic distances are defined as the expected numbers of crossovers between two p ...
Standard Biology Chapter 27 Human Genetics
... Understanding the Pedigree Count the number of affected males and affected females. If most males and few or no females most likely sex linked trait. Look at the affected individuals. If every individual with the trait has a parent with the trait then this trait is dominant. If nonaffected parents ...
... Understanding the Pedigree Count the number of affected males and affected females. If most males and few or no females most likely sex linked trait. Look at the affected individuals. If every individual with the trait has a parent with the trait then this trait is dominant. If nonaffected parents ...
Chromosomal Abnormalities
... somehow able to stop the bleeding. Because of his inexplicable ability to help Alexei, Rasputin became part of the “inner circle” and close confidant of the royal family, which also angered many people who did not trust him. Thus, when the Russian Revolution began, Rasputin was among the first to be ...
... somehow able to stop the bleeding. Because of his inexplicable ability to help Alexei, Rasputin became part of the “inner circle” and close confidant of the royal family, which also angered many people who did not trust him. Thus, when the Russian Revolution began, Rasputin was among the first to be ...
ABO Blood Types
... Mendel’s Peas were ideal for learning about inheritance, but they do not represent the norm… • Traits in pea plants are determined by just two alleles • In peas, one allele is clearly dominant & the other is clearly recessive • However, things aren’t always this clearcut and simple in the world of g ...
... Mendel’s Peas were ideal for learning about inheritance, but they do not represent the norm… • Traits in pea plants are determined by just two alleles • In peas, one allele is clearly dominant & the other is clearly recessive • However, things aren’t always this clearcut and simple in the world of g ...
Ch 15: Sex Determination & Sex Linkage
... ● Alfred Sturtevant was a graduate student working in Morgan’s lab part-time in 1911 ● He hypothesized that the farther apart 2 genes are on a chromosome the more likely they are to be separated by crossing-over ● The rate of at which linked genes are separated can be used to produce a “map” of dist ...
... ● Alfred Sturtevant was a graduate student working in Morgan’s lab part-time in 1911 ● He hypothesized that the farther apart 2 genes are on a chromosome the more likely they are to be separated by crossing-over ● The rate of at which linked genes are separated can be used to produce a “map” of dist ...
BIOLOGY I Study Guide # 5: Topic – Genetics 1 Name: Define:
... 15. The sequencing of human chromosomes 21 and 22 showed that a. some regions of chromosomes do not code for proteins. b. all of the DNA of chromosomes codes for proteins. c. different chromosomes have the same number of genes. 16. Which of the following form(s) a Barr body? a. the Y chromosome in a ...
... 15. The sequencing of human chromosomes 21 and 22 showed that a. some regions of chromosomes do not code for proteins. b. all of the DNA of chromosomes codes for proteins. c. different chromosomes have the same number of genes. 16. Which of the following form(s) a Barr body? a. the Y chromosome in a ...
Genetic Disorders
... Mutated fibrillin connective tissue protein Result Weakened aortal connective tissue Tall and thin with long arms, legs and fingers Affects Enlarged Aorta subject to rupture. ...
... Mutated fibrillin connective tissue protein Result Weakened aortal connective tissue Tall and thin with long arms, legs and fingers Affects Enlarged Aorta subject to rupture. ...