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Slide 1
Slide 1

... • Monosomy- the condition in which there is a missing chromosome. • Sex chromosome make up is X only • Females that will not undergo puberty. ...
Chromosomal Mutations
Chromosomal Mutations

... • Monosomy- the condition in which there is a missing chromosome. • Sex chromosome make up is X only • Females that will not undergo puberty. ...
Chapter 12 Chromosomal Patterns of Inheritance
Chapter 12 Chromosomal Patterns of Inheritance

... the sex chromosomes. This pair determines the sex of the new individual. The father can contribute an X chromosome or a Y chromosome to his offspring, while the mother can only contribute an X chromosome. Therefore, the sex of the offspring is determined by the genetic contribution of the father. Th ...
Slide 1
Slide 1

... • Prevent patient from self-injury • Snoring indicates normal breathing • If reguritation occurs, place in recovery position • Emergency medical treatment needed for >5 mins • Do not place objects in mouth. • Let seizure take its own course • Surgery very rare, for those meds cannot control – or tum ...
Genetics
Genetics

... Terminology cont’d • Carrier – an individual of heterozygous makeup that carriers, and therefore can pass on, a disease causing allele but doesn’t express that trait • Test cross – when an individual of known phenotype but unknown genotype (AA or Aa) is crossed with a homozygous recessive individua ...
Chapter 4 Lesson 2 (pg182-190) Modeling Inheritance • Punnett
Chapter 4 Lesson 2 (pg182-190) Modeling Inheritance • Punnett

...  Three alleles (instead two alleles)  You only get two alleles (one from each parent), but because there are three allele options, there are actually four blood types that can be created Phenotype Possible Genotypes Blood Type A AA or Ai Blood Type B BB or Bi Blood Type AB AB Blood Type O ii Sex-L ...
Warm-Up 2/26 and 2/27
Warm-Up 2/26 and 2/27

... • Distorts shape of red blood cells so they can’t carry oxygen well • Most common in tropical areas as this mutation actually prevents malaria (Plasmodium can’t infect ...
Chromosome Inversions - Birmingham Women`s Hospital
Chromosome Inversions - Birmingham Women`s Hospital

... This means that the ‘middle’ part of the chromosome called the centromere is involved. Pericentric inversions can lead to mistakes being made when the eggs or sperm are made. Some may get extra chromosome material and some may have missing chromosome material. This can lead to an increased chance of ...
linkage
linkage

... in a linear order on the chromosome, so one chromosome has many genes.  Genes on the same chromosome are called Linked Genes, and move together during meiosis.  These genes could be arranged with 2 dominant genes on one homologue and 2 recessive on the other, or one dominant and one recessive on e ...
AP 15-16 Test Review When Thomas Hunt Morgan crossed his red
AP 15-16 Test Review When Thomas Hunt Morgan crossed his red

... In cats, black fur color is caused by an X–linked allele; the other allele at this locus causes orange color. The heterozygote is tortoiseshell. What kinds of offspring would you expect from the cross of a black female and an orange male? Red-green color blindness is a sex-linked recessive trait in ...
Chromosome Chromo
Chromosome Chromo

... Cytogenetics = The study of chromosome number, structure, function, and behavior in relation to gene inheritance, organization and expression ...
Chapter 24
Chapter 24

... particular population. A mutant is an allele that is different from the wild-type producing an uncommon phenotype. The combination of genes present in a person’s cell is its genotype. The appearance of the individual as a result of gene expression is his or her phenotype. Incomplete dominance is a c ...
Honors Biology - WordPress.com
Honors Biology - WordPress.com

... chromosome, males have only one allele instead of two. This results in expressing the recessive phenotype for such a trait is much more likely for males. If you have two alleles for a given genetic trait, both recessive alleles must be present for your to express the recessive phenotype. For sex-lin ...
Drosophila - mccombsscience
Drosophila - mccombsscience

... The genes located on the X and Y chromosome show a pattern of inheritance called sex-linkage Genes found on the Y chromosome are found only in males and are passed directly from father to son Genes on the X chromosome are found in both sexes, but the fact that men have just one X chromosome leads to ...
I. Multiple Choice: choose one best answer (2.5 points each, 80 points)
I. Multiple Choice: choose one best answer (2.5 points each, 80 points)

... C. single-celled organisms. D. cancer cell. E. human cervical cells. 14. Which histone is not a necessary component in the formation of nucleosornes? ...
X-inactivation
X-inactivation

... 5. histones in heterochromatin are methylated on lysine - methylation of histones creates binding site for heterochromatic protein HP1 – role in organisation of heterochromatin 6. Heterochromatin is transcriptionally inactive constitutive heterochromatin does not contain any genes facultative: gene ...
Chapter 24
Chapter 24

... a particular population. A mutant is an allele that is different from the wild-type producing an uncommon phenotype. The combination of genes present in a person’s cell is its genotype. The appearance of the individual as a result of gene expression is his or her phenotype. Incomplete dominance is a ...
AP Bio
AP Bio

... chromatids from the homologous chromosomes exchange equal segments ...
The Chromosomal Basis of Inheritance
The Chromosomal Basis of Inheritance

... • Linked Genes—genes that are on the same chromosome. • Genes on a chromosome tend to be inherited together because chromosomes are inherited as a unit. • See test cross on pg. 273 ...
Laboratory Projects
Laboratory Projects

... – Number of cell divisions in development limited by impaired ability to repair endogenously generated DNA damage – Ku-deficient cells might take longer to repair this damage ...
File
File

... • Males express sex linked traits more frequently than females. (XY vs. XX) • If the gene is found on the X chromosome, it will be expressed in males no matter if it is dominant or recessive. • For females, they must have 2 copies of the gene to express that disorder. ...
Homologs: behave independently in mitosis Tfm: secondary and
Homologs: behave independently in mitosis Tfm: secondary and

... PD=NPD: genes on non-homologous chromosomes Essential genes: about 1/3 of all genes 5-bromouracil: a base analog trait rare: assume unrelated individuals homozygous or hemizygous for normal allele auxotroph: requires nutritional supplementation beyond that required by wild type SNP: due to a base pa ...
Chi-Square Analysis
Chi-Square Analysis

...  Two true-breeding Drosophila are crossed: a normal-winged, red-eyed female and a miniature-winged, vermillion-eyed male. The F1 offspring all have normal wings and red eyes. When the F1 offspring are crossed with miniature-winged, vermillion-eyed flies, the following offspring resulted: 233 normal ...
Boy or Girl?? - Perry Local Schools
Boy or Girl?? - Perry Local Schools

... • passed from parent to child through a mutation  in the normal gene.  • Each child of an HD parent has a 50­50 chance  of inheriting the HD gene.  • If a child does not inherit the HD gene, he or she  will not develop the disease and cannot pass it to  ...
Chromosomal Inheritance pdf
Chromosomal Inheritance pdf

... If only on X, then females XX carry two copies of the gene and males have only one If recessive, females must be homozygous to show trait Sex-linked genes: located on sex chromosomes (X or Y) X is larger and has more genes on it; both genders may be affected ...
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Skewed X-inactivation

Skewed X chromosome inactivation occurs when the inactivation of one X chromosome is favored over the other, leading to an uneven number of cells with each chromosome inactivated. It is usually defined as one allele being found on the active X chromosome in over 75% of cells, and extreme skewing is when over 90% of cells have inactivated the same X chromosome. It can be caused by primary nonrandom inactivation, either by chance due to a small cell pool or directed by genes, or caused by secondary nonrandom inactivation, which occurs by selection. Most females will have some levels of skewing. It is relatively common in adult females; around 35% of women have skewed ratio over 70:30, and 7% of women have an extreme skewed ratio of over 90:10. This is of medical significance due to the potential for the expression of disease genes present on the X chromosome that are normally not expressed due to random X inactivation. X chromosome inactivation occurs in females to provide dosage compensation between the sexes. If females kept both X chromosomes active they would have twice the number of active X genes than males, who only have one copy of the X chromosome. At approximately the time of implantation (see Implantation (human embryo), one of the two X chromosomes is randomly selected for inactivation. The cell undergoes transcriptional and epigenetic changes to ensure this inactivation is permanent. All progeny from these initial cells will maintain the inactivation of the same chromosome, resulting in a mosaic pattern of cells in females.
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