CHROMOSOMAL BASIS OF INHERITANCE
... • Other - Barr body - reactivated in ovaries during egg production (to pass genes on). • Females exhibit characteristics from mother, some from father (sex chromosomes only). ...
... • Other - Barr body - reactivated in ovaries during egg production (to pass genes on). • Females exhibit characteristics from mother, some from father (sex chromosomes only). ...
Biol 211 (2) Chapter 13 KEY
... 3. What is the difference between genes and alleles?! 1. A gene is a section of DNA that encodes information, while alleles are different versions of the same gene. ! 4. Briefly describe the different processes in Meiosis—Meiosis I and Meiosis II.! 1. During Meiosis I, the diploid parent cell produc ...
... 3. What is the difference between genes and alleles?! 1. A gene is a section of DNA that encodes information, while alleles are different versions of the same gene. ! 4. Briefly describe the different processes in Meiosis—Meiosis I and Meiosis II.! 1. During Meiosis I, the diploid parent cell produc ...
Genetics Notes
... Problems with Chromosome Number nondisjunction – members of homologous chromosomes do not move apart in Meiosis I or sister chromatids do not separate during Meiosis II leaves one cell with too few chromosomes and one cell with too many. monosomy – only one of a particular type of chromosome (2n -1 ...
... Problems with Chromosome Number nondisjunction – members of homologous chromosomes do not move apart in Meiosis I or sister chromatids do not separate during Meiosis II leaves one cell with too few chromosomes and one cell with too many. monosomy – only one of a particular type of chromosome (2n -1 ...
Name: MEIOSIS MANIPULATIVES Introduction: You are going to
... Note: A chromosome is a tightly coiled strand of DNA and within each chromosome there are many, many genes. The chromosomes within each pair are homologous. Homologous chromosomes are the same in size and function but they do have different alleles. For instance, the homologous chromosome may contai ...
... Note: A chromosome is a tightly coiled strand of DNA and within each chromosome there are many, many genes. The chromosomes within each pair are homologous. Homologous chromosomes are the same in size and function but they do have different alleles. For instance, the homologous chromosome may contai ...
ANSWERS TO REVIEW QUESTIONS
... c. A female with trisomy 21 Down syndrome. Phenotype includes short, sparse, straight hair, wide-set eyes with epicanthal folds, a broad nose, protruding tongue, mental retardation, and increased risk of a heart defect, suppressed immunity, and leukemia. 8. Basketball players may have an extra Y chr ...
... c. A female with trisomy 21 Down syndrome. Phenotype includes short, sparse, straight hair, wide-set eyes with epicanthal folds, a broad nose, protruding tongue, mental retardation, and increased risk of a heart defect, suppressed immunity, and leukemia. 8. Basketball players may have an extra Y chr ...
Genes are on chromosomes
... Genes are on chromosomes Figure of Eukaryote chromosome Chromosomes have telomeres (2), centromeres (1) & origins of replications (multiple) Each chromosome is a long, linear, DNA duplex telomere centromere telomere. Genes are regions of DNA along the chromosome. Each gene occupies a specific region ...
... Genes are on chromosomes Figure of Eukaryote chromosome Chromosomes have telomeres (2), centromeres (1) & origins of replications (multiple) Each chromosome is a long, linear, DNA duplex telomere centromere telomere. Genes are regions of DNA along the chromosome. Each gene occupies a specific region ...
What are chromosomes?
... inverted or opposite manner. Since there is no loss nor gain of chromosomal material, inversion carriers are normal Paracentric: does not include the centromere pericentric:inverted segment contains the centromere In meiosis, the normal chromosome and the inverted chromosome will form a loop to allo ...
... inverted or opposite manner. Since there is no loss nor gain of chromosomal material, inversion carriers are normal Paracentric: does not include the centromere pericentric:inverted segment contains the centromere In meiosis, the normal chromosome and the inverted chromosome will form a loop to allo ...
Genetics - Bakersfield College
... Since Mendel’s time, we’ve found many traits which aren’t inherited in such simple fashion: polygenic inheritance - more than one gene (locus) controls the trait ...
... Since Mendel’s time, we’ve found many traits which aren’t inherited in such simple fashion: polygenic inheritance - more than one gene (locus) controls the trait ...
X-inactivation
... Active chromatin – central position in nucleus, it allows maximal efficiency of replication and transcription 2. Centromeric heterochromatin - role in centromeric function – in cohesion of sister chromatids and normal disjunction of chromatids 3. Role in epigenetic regulation of gene expression duri ...
... Active chromatin – central position in nucleus, it allows maximal efficiency of replication and transcription 2. Centromeric heterochromatin - role in centromeric function – in cohesion of sister chromatids and normal disjunction of chromatids 3. Role in epigenetic regulation of gene expression duri ...
Chapter 10 PowerPoint - Bryn Mawr School Faculty Web Pages
... meiosis, the genes that they contain are also independently assorted only if they are part of different chromosomes. Genes in the same chromosome are passed on together as a unit. Such genes are said to be linked. For example, the "A" and "B" alleles (in the illustration below) will both be passed o ...
... meiosis, the genes that they contain are also independently assorted only if they are part of different chromosomes. Genes in the same chromosome are passed on together as a unit. Such genes are said to be linked. For example, the "A" and "B" alleles (in the illustration below) will both be passed o ...
Mutations
... • Failure of chromosomes to separate during meiosis • Causes gamete to have too many or too few chromosomes • Disorders: – Down Syndrome – three 21st chromosomes – Turner Syndrome – single X chromosome – Klinefelter’s Syndrome – XXY chromosomes ...
... • Failure of chromosomes to separate during meiosis • Causes gamete to have too many or too few chromosomes • Disorders: – Down Syndrome – three 21st chromosomes – Turner Syndrome – single X chromosome – Klinefelter’s Syndrome – XXY chromosomes ...
Meiosis
... Bell work 12/7 Suppose that for an organism, 2N = 24. How many chromosomes do the organism’s gametes contain? Explain. ...
... Bell work 12/7 Suppose that for an organism, 2N = 24. How many chromosomes do the organism’s gametes contain? Explain. ...
File ap notes chapter 15
... genes are located on different chromosomes When recombinant frequency is less than 50% genes are located on the same chromosome; recombinants result from crossing over; amount of recombinants is related to the distance between the two gene’s loci ...
... genes are located on different chromosomes When recombinant frequency is less than 50% genes are located on the same chromosome; recombinants result from crossing over; amount of recombinants is related to the distance between the two gene’s loci ...
The Chromosomal Basis of Inheritance
... (gray-normal wings), and double mutant (black-vestigial wings) flies among the offspring • These were the phenotypes of the original parents • This is because the genes for body color and wing size are located on the same chromosome in fruit flies and are therefore usually inherited together ...
... (gray-normal wings), and double mutant (black-vestigial wings) flies among the offspring • These were the phenotypes of the original parents • This is because the genes for body color and wing size are located on the same chromosome in fruit flies and are therefore usually inherited together ...
Changes in Chromosome Structure
... 1. Chromosome is lost if centromere is deleted. 2. Chromosomes with deletions do not revert to the wild type state. 3. Recombination frequencies between genes flanking the deletion are reduced. 4. Deletions are lethal in the homozygous state. ...
... 1. Chromosome is lost if centromere is deleted. 2. Chromosomes with deletions do not revert to the wild type state. 3. Recombination frequencies between genes flanking the deletion are reduced. 4. Deletions are lethal in the homozygous state. ...
Cytogenetic Disorders Involving Sex Chromosomes
... ■ Patients with Down syndrome have severe mental retardation, flat facial profile, epicanthic folds, cardiac malformations, higher risk of leukemia and infections, and premature development of Alzheimer disease. ■ Deletion of genes at chromosomal locus 22q11.2 gives rise to malformations affecting ...
... ■ Patients with Down syndrome have severe mental retardation, flat facial profile, epicanthic folds, cardiac malformations, higher risk of leukemia and infections, and premature development of Alzheimer disease. ■ Deletion of genes at chromosomal locus 22q11.2 gives rise to malformations affecting ...
Chapter 14- Human Genome
... chromosome fail to separate during meiosis, an individual may be born with three copies of a chromosome. ...
... chromosome fail to separate during meiosis, an individual may be born with three copies of a chromosome. ...
Non-disjunction
... is actually lost. • causes include viruses, radiation and chemicals • may carry a specific gene which may have a large effect on the host. ...
... is actually lost. • causes include viruses, radiation and chemicals • may carry a specific gene which may have a large effect on the host. ...
Karyotyping and Pedigrees
... “The Royal Disease” Read the short story Alexis: The Prince Who Had Hemophilia – by:-Kelley, Laureen A. Set in the early 1900s, this is the story of the youngest child of Tsar Nicholas II of Russia, last Tsar of Russia. The story includes how Alexis's hemophilia influenced the course of events in Ru ...
... “The Royal Disease” Read the short story Alexis: The Prince Who Had Hemophilia – by:-Kelley, Laureen A. Set in the early 1900s, this is the story of the youngest child of Tsar Nicholas II of Russia, last Tsar of Russia. The story includes how Alexis's hemophilia influenced the course of events in Ru ...
MCDB 1041 Quiz 1 Review Sheet An excellent way to review is to
... c. Know the function of the plasma membrane, the organelles and the nucleus, and why they are important for cellular function. 2. Describe the mechanisms by which an organism’s genome is passed on to the next generation. a) Be able to distinguish between somatic and germ cells (gametes). b) Describe ...
... c. Know the function of the plasma membrane, the organelles and the nucleus, and why they are important for cellular function. 2. Describe the mechanisms by which an organism’s genome is passed on to the next generation. a) Be able to distinguish between somatic and germ cells (gametes). b) Describe ...
Zoo/Bot 3333
... Questions 1-2 pertain to the following. Fertile varieties of the Golana melon are known that contain 14, 28, 42, 56, and 70 chromosomes, respectively. A variety that contains 21 chromosomes exists, but can only be propagated through cuttings. 1. The monoploid number for these Golana melon species is ...
... Questions 1-2 pertain to the following. Fertile varieties of the Golana melon are known that contain 14, 28, 42, 56, and 70 chromosomes, respectively. A variety that contains 21 chromosomes exists, but can only be propagated through cuttings. 1. The monoploid number for these Golana melon species is ...
14-1 Human Heredity
... 9. What does “polygenic” mean? ________________________________________________ 10. What environmental factor has improved the height of Americans? __________________________ 11. Our complete set of genetic information is called The _________________ ___________________ 12. Compared to peas and frui ...
... 9. What does “polygenic” mean? ________________________________________________ 10. What environmental factor has improved the height of Americans? __________________________ 11. Our complete set of genetic information is called The _________________ ___________________ 12. Compared to peas and frui ...
Mutations
... and lost during mitosis and meiosis. Also occur when chromosomes break and rejoin incorrectly. – Deletion- when part of a chromosome is left out – Insertion- when a part of a chromatid breaks off and attaches to its sister chromatid – Inversion- takes place when a part of a chromosome breaks out and ...
... and lost during mitosis and meiosis. Also occur when chromosomes break and rejoin incorrectly. – Deletion- when part of a chromosome is left out – Insertion- when a part of a chromatid breaks off and attaches to its sister chromatid – Inversion- takes place when a part of a chromosome breaks out and ...