Lecture 3: Chromosomes and sex determination
... white mutation). Then the wild type allele is w+ Morgan hypothesized the following: 1.The gene for eye color resides on X chromosome. 2.Females with red eyes are homozygous w+ / w+. 3.Males with white eyes are hemizygous w / Y, because Y chromosome does not carry anyF2 allele of this gene. ...
... white mutation). Then the wild type allele is w+ Morgan hypothesized the following: 1.The gene for eye color resides on X chromosome. 2.Females with red eyes are homozygous w+ / w+. 3.Males with white eyes are hemizygous w / Y, because Y chromosome does not carry anyF2 allele of this gene. ...
The Cell and Inheritance
... Grasshopper’s sex cells have exactly half the number of chromosomes found in its body cells. ...
... Grasshopper’s sex cells have exactly half the number of chromosomes found in its body cells. ...
Chapter 14
... • Rh blood group is determined by a single gene with two alleles- one is positive and the other is negative. • Rh stands for “rhesus monkey” because that was the animal that the Rh factor was discovered in. • The positive allele (Rh+) is dominant, meaning people who are Rh+/Rh+ or Rh+/Rh- are Rh-po ...
... • Rh blood group is determined by a single gene with two alleles- one is positive and the other is negative. • Rh stands for “rhesus monkey” because that was the animal that the Rh factor was discovered in. • The positive allele (Rh+) is dominant, meaning people who are Rh+/Rh+ or Rh+/Rh- are Rh-po ...
Lecture
... A biologically inspired model of intelligence and the principles of biological evolution are applied to find solutions to difficult problems The problems are not solved by reasoning logically about them; rather populations of competing candidate solutions are spawned and then evolved to become bette ...
... A biologically inspired model of intelligence and the principles of biological evolution are applied to find solutions to difficult problems The problems are not solved by reasoning logically about them; rather populations of competing candidate solutions are spawned and then evolved to become bette ...
Pedigree
... between organisms with two different phenotypes produces offspring with a third phenotype in which both of the parental traits appear together. . ...
... between organisms with two different phenotypes produces offspring with a third phenotype in which both of the parental traits appear together. . ...
Heredity
... A pedigree is a chart or “family tree” that tracks the members of a family that have a certain trait. Circles stand for female Squares stand for males A line connecting a square & circle shows they are married Shaded = person has the trait Half-shaded = carries one allele for the trait but does not ...
... A pedigree is a chart or “family tree” that tracks the members of a family that have a certain trait. Circles stand for female Squares stand for males A line connecting a square & circle shows they are married Shaded = person has the trait Half-shaded = carries one allele for the trait but does not ...
Unit I Objectives
... 7. What do cell membrane receptors, channels, and transporters do for the cell? 8. How is cystic fibrosis an example of what happens when a cell membrane channel protein is defective? What organ is most affected in CF? 9. In what way is DNA the genetic material? What is the function of DNA in cells? ...
... 7. What do cell membrane receptors, channels, and transporters do for the cell? 8. How is cystic fibrosis an example of what happens when a cell membrane channel protein is defective? What organ is most affected in CF? 9. In what way is DNA the genetic material? What is the function of DNA in cells? ...
Chapter 14
... B. When homologous chromosomes fail to separate properly during meiosis (nondisjunction), gametes have extra or missing chromosomes. Examples: Autosomal - Down Syndrome - trisomy 21 •Mild to severe mental retardation •Increased frequency of birth defects •Increased susceptibility to disease Sex Chro ...
... B. When homologous chromosomes fail to separate properly during meiosis (nondisjunction), gametes have extra or missing chromosomes. Examples: Autosomal - Down Syndrome - trisomy 21 •Mild to severe mental retardation •Increased frequency of birth defects •Increased susceptibility to disease Sex Chro ...
Foundations of Biology
... Men have only one X chromosome and they are normal (at least they think so) Women have two X chromosomes and they are normal Mary Lyon proposed that the extra dosage of X chromosome that women have is compensated for by turning off one of the X chromosomes. This turned off chromosome can be ...
... Men have only one X chromosome and they are normal (at least they think so) Women have two X chromosomes and they are normal Mary Lyon proposed that the extra dosage of X chromosome that women have is compensated for by turning off one of the X chromosomes. This turned off chromosome can be ...
Chapter 12 Section 3-Codominance in Humans
... • If son receives allele on X chromosomes it will be expressed b/c males have only 1 chromosome • 2 traits that are X-linked disorders are: 1. Red-green blindness 2. Hemophilia B) Red-green colorblindness – Individual can’t distinguish between red & green – Caused by recessive allele found at 1 of ( ...
... • If son receives allele on X chromosomes it will be expressed b/c males have only 1 chromosome • 2 traits that are X-linked disorders are: 1. Red-green blindness 2. Hemophilia B) Red-green colorblindness – Individual can’t distinguish between red & green – Caused by recessive allele found at 1 of ( ...
Sex Determination
... Consequences of X Chromosome Dosage Compensation During early development, X chromosomes are randomly turned off in female cells All daughter cells have the same X chromosome inactivated as their parental cell. Thus, females are a mosaic of patches of cells some patches expressing the genes on the ...
... Consequences of X Chromosome Dosage Compensation During early development, X chromosomes are randomly turned off in female cells All daughter cells have the same X chromosome inactivated as their parental cell. Thus, females are a mosaic of patches of cells some patches expressing the genes on the ...
notes
... properly - can occur during meiosis I (all cells affected) or meiosis II (half cells affected) Aneuploidy - having an abnormal chromosome number Trisomic/TRISOMY - having 3 chromosomes 2n+1 Monosomic - having 1 chromosome 2n-1 Polyploidy - having move than 2 sets of chromosomes ...
... properly - can occur during meiosis I (all cells affected) or meiosis II (half cells affected) Aneuploidy - having an abnormal chromosome number Trisomic/TRISOMY - having 3 chromosomes 2n+1 Monosomic - having 1 chromosome 2n-1 Polyploidy - having move than 2 sets of chromosomes ...
Mendel Power Point
... Chromosomes-transmitted from one generation to the next, contains many genes Gene- sequence of DNA on the chromosome, determines trait (about 30,000 in humans) ...
... Chromosomes-transmitted from one generation to the next, contains many genes Gene- sequence of DNA on the chromosome, determines trait (about 30,000 in humans) ...
Concepts of Genetics Necessities of Life Reproduction: DNA DNA
... •Sickle cell anemia is a genetic condition caused by a point mutation: the change in one nucleotide within the sequence of 438 bases coding for the hemoglobin beta chain •The shift in the 17th nucleotide from a Thymine base to an Adenine base causes a shift in the 6th amino acid from glutamic acid t ...
... •Sickle cell anemia is a genetic condition caused by a point mutation: the change in one nucleotide within the sequence of 438 bases coding for the hemoglobin beta chain •The shift in the 17th nucleotide from a Thymine base to an Adenine base causes a shift in the 6th amino acid from glutamic acid t ...
Παρουσίαση του PowerPoint
... We have previously analyzed the gene expression profile in urinary bladder cancer and determined the differentially expressed (DE) genes between cancer and healthy tissue. It is reasonable to assume that genes with similar expression profiles are regulated by the same set of transcription factors. I ...
... We have previously analyzed the gene expression profile in urinary bladder cancer and determined the differentially expressed (DE) genes between cancer and healthy tissue. It is reasonable to assume that genes with similar expression profiles are regulated by the same set of transcription factors. I ...
Genetics Review: What is genetics? Genetics is what makes me
... Phenotype: a manifestation of genes. Appearance of organism due to traits expressed by a particular genotype. Genotype: the genetic makeup that is controlled by an organism’s alleles. Locus: the physical location of a gene on a chromosome. ...
... Phenotype: a manifestation of genes. Appearance of organism due to traits expressed by a particular genotype. Genotype: the genetic makeup that is controlled by an organism’s alleles. Locus: the physical location of a gene on a chromosome. ...
Practice Exam 3- 4/3 Below are sample questions from your book, a
... 5. Which of the following does not occur during mitosis? a. condensation of the chromosomes b. replication of the DNA c. separation of sister chromatids d. spindle formation e. separation of the spindle poles 6. A human cell containing 22 autosomes and a Y chromosome in a. a sperm b. an egg c. a zy ...
... 5. Which of the following does not occur during mitosis? a. condensation of the chromosomes b. replication of the DNA c. separation of sister chromatids d. spindle formation e. separation of the spindle poles 6. A human cell containing 22 autosomes and a Y chromosome in a. a sperm b. an egg c. a zy ...
Genetic Interactions and Linkage
... • Individuals of both sexes carry copies of all of these genes even if they are not expressed in a particular sex! ...
... • Individuals of both sexes carry copies of all of these genes even if they are not expressed in a particular sex! ...
PowerPoint to accompany Hole`s Human Anatomy and Physiology
... • A gene consists of hundreds of nucleotide building blocks and exists in variant forms called alleles that differ in DNA sequence • An individual who has two identical alleles of a particular gene is homozygous for that gene • A person with two different alleles for a gene is heterozygous • The par ...
... • A gene consists of hundreds of nucleotide building blocks and exists in variant forms called alleles that differ in DNA sequence • An individual who has two identical alleles of a particular gene is homozygous for that gene • A person with two different alleles for a gene is heterozygous • The par ...
Cell Division Cancer review 14-15
... follow how it forms from Interphase (chromatin) to Prophase (chromosome). 8. Know the definition of these terms and be able to apply them to key concepts: ...
... follow how it forms from Interphase (chromatin) to Prophase (chromosome). 8. Know the definition of these terms and be able to apply them to key concepts: ...
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.