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lecture 3 notes
lecture 3 notes

... or only asexual. Reproduction mostly occurs by conjugation. Transfer of nuclear material or whole cell fusion. ...
Guidelines and Assignments
Guidelines and Assignments

... 1. (MT1) A. How is the 5-mC distributed within the human genome? B. Do all human genes have CpG island at their promoters? C. How bisulfite treatment may affect the CpG methylation status? D. What methods can be used to detect the methylation status of DNA? Please describe at least four different me ...
gene duplication
gene duplication

... simple and direct it is easy to see how genotype affects phenotype.  For example, alleles of a single gene controls leaf shape ...
Genetics - Garnet Valley
Genetics - Garnet Valley

... A. Genetic Engineeringexperimentations that changes the arrangement of DNA that makes up a gene. ...
AP Biology Chapter 15 Chromosomal Basis of Inheritance Guided
AP Biology Chapter 15 Chromosomal Basis of Inheritance Guided

... • Females are ____, and males are _______ • Each ovum contains an ___ chromosome, while a sperm may contain either an __ or a ___ chromosome • Other animals have different methods of sex ...
Genetics of MD - Myotonic Dystrophy Foundation
Genetics of MD - Myotonic Dystrophy Foundation

... faulty gene is located on one of the chromosomes that does not determine sex (autosome) and that one copy of the mutated gene is enough to cause the disease (dominant). Because the gene is not located on the X or Y sex chromosomes, it can be passed to male and female children with equal frequency. I ...
You Light Up My Life
You Light Up My Life

... Genetic Disorder • Inherited conditions that cause mild to severe medical problems • Why don’t they disappear? – Mutation introduces new rare alleles – In heterozygotes, harmful allele is masked, so it can still be passed on to offspring ...
File
File

... sequence (order) of all 6 billion bases (letters) in human DNA. It is like having a manual to the human body. • We have about 24,000 genes • Has helped identify over 1800 diseases • There are now over 2000 tests for genetic diseases ...
APOC1 gene rs4420638 SNP
APOC1 gene rs4420638 SNP

Why Do Names Keep Changing
Why Do Names Keep Changing

... Video- double click to see ...
Biological Basis for Gene Hunting
Biological Basis for Gene Hunting

... In this figure, we begin with the same homologous chromosomes depicted in Figure 1.1 (the left hand pair of chromosomes). In the genesis of a sperm or egg, these chromosomes pair up and exchange genetic material. In Figure 1.2 (middle panel), the exchange occurs between the B and the C locus. As a r ...
Slide 1
Slide 1

... combining withfrom yourtheir partner’s one from their dad. We will look at size genes today. Turn over the cards to see which gene characteristics (allelles) your lambfrom will carry Each remove the two size gene cards the pack and place them Record your lamb’s gene characteristics on your sheet col ...
13q deletions including RB1 FTNW
13q deletions including RB1 FTNW

... occurs as a mistake in a natural process when the parent’s sperm or egg cells are forming. The change in the gene on the other chromosome may occur at the same time or later. What is known is that all genes change, within our bodies and when they are passed from parent to child. The changes are not ...
Cell Reproduction & Mitosis
Cell Reproduction & Mitosis

... chromosomes is essential for normal development and function  2. Humans missing one chromosome typically do not survive ...
MEIOSIS (making sperm and egg cells…)
MEIOSIS (making sperm and egg cells…)

Exceptions to Mendel`s Principles
Exceptions to Mendel`s Principles

... Linkage: Some genes that are close on the same chromosomes are less likely to be separated during crossing-over. i.e. they end up getting shuffled together most of the time. Example: red hair and freckles. ...
Human genetic L.Saba Abood
Human genetic L.Saba Abood

... Deoxyribonucleic acid is a double helix formed by base pairs attached to a sugarphosphate backbone. consists of a ribose sugar with a “missing oxygen” (that’s the de-oxy part), It is a polymer made of repeating subunits called nucleotides DNA Structure A nucleotide consists of three main components: ...
IJEB 55(1) 15-20
IJEB 55(1) 15-20

... however, the factors leading to such preferential gene fusions are yet to be understood. The proximity of the genetic regions is considered important for genetic exchange, and interphase molecular cytogenetic methods can be employed to measure the same. The interphase genomic location of gene pairs ...
BDOL Interactive Chalkboard
BDOL Interactive Chalkboard

... V. Codominance A. Codominant alleles cause the phenotypes of both homozygotes to be produced in heterozygous individuals. 1. both alleles are expressed equally ...
SCI24TutDec2nd - Rocky View Schools
SCI24TutDec2nd - Rocky View Schools

... chromosome of each pair comes from the father. Human sex cells (egg or sperm) contain half the number of chromosomes (23). Females have two X chromosomes in their cells, while males have one x or one y chromosome. When an egg is fertilized with an Xcontaining sperm, the offspring is XX (girl), when ...
FREE Sample Here
FREE Sample Here

... 16. Calvin Bridges, an associate of Morgan’s, found further evidence that genes were located on chromosomes. Which of the following is not a component of his study? 1. He crossed white-eyed females (XwXw) with red-eyed males (XWY). 2. The F1 progeny were mostly the red-eyed males and white-eyed fema ...
Document
Document

... • Only 1/10,000 cells transfer the complete chromosome, including the remainder of the F factor, • Thus, most recipient cells remain F-. ...
Tt (tall) - Amazon Web Services
Tt (tall) - Amazon Web Services

... • Principle of Dominance - when 2 forms of the same gene are present the dominant allele is expressed • Principle of Segregation - in meiosis two alleles separate so that each gamete receives only one form of the gene • Principle of Independent Assortment - each trait is inherited independent of oth ...
Intro to Genetics PowerPoint - E
Intro to Genetics PowerPoint - E

... Earlier this week various students articulated that they inherited a specific trait from their cousins, aunts, or uncles. Raise your hand if you can relate to this ...
Document
Document

... • Only 1/10,000 cells transfer the complete chromosome, including the remainder of the F factor, • Thus, most recipient cells remain F-. ...
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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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