Ch 14- Human Genome
... • So can you look at a pedigree and figure out which family the good looks came from? – Shape of eyes and ears are actually polygenic traits – Many traits influenced by environmental factors such as nutrition and exercise ...
... • So can you look at a pedigree and figure out which family the good looks came from? – Shape of eyes and ears are actually polygenic traits – Many traits influenced by environmental factors such as nutrition and exercise ...
Cell division and chromosomes - questions
... 10 A fruit fly has four pairs of chromosomes in its cells. At meiosis, how many different combinations of maternal and paternal chromosomes are possible in the gametes? 11 From the list below, choose the most suitable words to complete the sentence. Mutations are changes which occur in a ….. A …..or ...
... 10 A fruit fly has four pairs of chromosomes in its cells. At meiosis, how many different combinations of maternal and paternal chromosomes are possible in the gametes? 11 From the list below, choose the most suitable words to complete the sentence. Mutations are changes which occur in a ….. A …..or ...
Chapter 24: Patterns of Chromosome Inheritance
... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
... Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display. ...
Introducing:
... gene map. It is called a map because it shows where the genes are located down the chromosome. Genes have numbers and letters that make up their names. •You can see how any rearrangement mutations in the chromosomes can alter the order and/or function of gene. •Numerical mutations will affect the nu ...
... gene map. It is called a map because it shows where the genes are located down the chromosome. Genes have numbers and letters that make up their names. •You can see how any rearrangement mutations in the chromosomes can alter the order and/or function of gene. •Numerical mutations will affect the nu ...
Chromosomes, Alleles, Genes, Mutations
... Homologous Chromosomes: chromosomes that have the same genes as each other, arranged in the same sequence, but not necessarily the same alleles of those genes ...
... Homologous Chromosomes: chromosomes that have the same genes as each other, arranged in the same sequence, but not necessarily the same alleles of those genes ...
Modern Genetics
... Down’s Syndrome = body cells have an extra chromosome-21 Trisomy-21 (3 instead of 2) May have various physical problems and some degree of mental retardation ...
... Down’s Syndrome = body cells have an extra chromosome-21 Trisomy-21 (3 instead of 2) May have various physical problems and some degree of mental retardation ...
Sexual Reproduction
... are used to examine an individual’s chromosomes. Karyotypes are made from a sample of a person’s blood. Arranged from largest to smallest Last pair of chromosomes are The exception, they are sex chromosomes which determine the gender of the offspring XX = female, XY = male ...
... are used to examine an individual’s chromosomes. Karyotypes are made from a sample of a person’s blood. Arranged from largest to smallest Last pair of chromosomes are The exception, they are sex chromosomes which determine the gender of the offspring XX = female, XY = male ...
Exam 2
... 10. A genetic counselor is working with families with a history of Huntington's Disease (an autosomal dominant disease), sickle cell anemia (an autosomal recessive disease) and hemophilia (a sex-linked recessive disease). As she races to her office, a gust of wind blows the pedigrees describing the ...
... 10. A genetic counselor is working with families with a history of Huntington's Disease (an autosomal dominant disease), sickle cell anemia (an autosomal recessive disease) and hemophilia (a sex-linked recessive disease). As she races to her office, a gust of wind blows the pedigrees describing the ...
Biology 3201 - Chapter 14 Terms
... Cell Cycle – Cells reproduce through the continuous sequence of growth and division. Interphase – The growth stage of the cell cycle. The cell makes new molecules, which increases the cell’s volume and mass. DNA is copied during interphase. The three parts of interphase are G1, S phase, and G2. G1 ( ...
... Cell Cycle – Cells reproduce through the continuous sequence of growth and division. Interphase – The growth stage of the cell cycle. The cell makes new molecules, which increases the cell’s volume and mass. DNA is copied during interphase. The three parts of interphase are G1, S phase, and G2. G1 ( ...
Chapter 10 / Chromosomes, Mitosis, and Meiosis I. Introduction
... 3. genes carry codes to make a single protein or many proteins 4. one or many genes may determine a particular trait 5. genes can be turned on or off 6. genes are passed on C. Variation between different organisms 1. all individuals of a particular species of organism have the same normal number of ...
... 3. genes carry codes to make a single protein or many proteins 4. one or many genes may determine a particular trait 5. genes can be turned on or off 6. genes are passed on C. Variation between different organisms 1. all individuals of a particular species of organism have the same normal number of ...
Chromosomes and Cell Reproduction
... • Much more complicated process due to larger amount of genetic information (genes) • Genes = segment of DNA that codes for a protein or RNA molecule • When genes being used, DNA (chromatin – DNA and its associated proteins) is stretched out • Before cell division, DNA must divide and then coil up i ...
... • Much more complicated process due to larger amount of genetic information (genes) • Genes = segment of DNA that codes for a protein or RNA molecule • When genes being used, DNA (chromatin – DNA and its associated proteins) is stretched out • Before cell division, DNA must divide and then coil up i ...
Lecture Powerpoint Here
... • When the reciprocal translocation occurred, a gene at the end of chromosome 9 fused with a gene from chromosome 22 • This hybrid gene encodes an abnormal protein that stimulates uncontrolled division of white blood cells ...
... • When the reciprocal translocation occurred, a gene at the end of chromosome 9 fused with a gene from chromosome 22 • This hybrid gene encodes an abnormal protein that stimulates uncontrolled division of white blood cells ...
to print
... • To do this, it randomly sorts chromosomes from both sets in one cell division and then reduces them by half in another. Therefore, each sperm or egg that the body produces is unique and different -- it contains a different mix of the mother's and father's genes. – This is why two brothers in the s ...
... • To do this, it randomly sorts chromosomes from both sets in one cell division and then reduces them by half in another. Therefore, each sperm or egg that the body produces is unique and different -- it contains a different mix of the mother's and father's genes. – This is why two brothers in the s ...
Exam 4 Review - Iowa State University
... 6.) Looking through a microscope at some dividing cells, you note that the chromosomes are visible and the stage most closely resemble that of the one labeled “A” in figure 1. What stage is it? A) metaphase B) prophase C) anaphase D) G1 E) interphase 7.) Asexual reproduction results in the productio ...
... 6.) Looking through a microscope at some dividing cells, you note that the chromosomes are visible and the stage most closely resemble that of the one labeled “A” in figure 1. What stage is it? A) metaphase B) prophase C) anaphase D) G1 E) interphase 7.) Asexual reproduction results in the productio ...
GENES AND CHROMOSOMES
... I. Interpretation of Mendel’s laws with reference to meiosis. A. alleles carried on homologs (sketch these) 1. homologs segregate during meiosis 2. gametes carry one allele or the other, but not both B. when two pairs of alternate alleles carried on two pairs of homologs 1. homologs separate during ...
... I. Interpretation of Mendel’s laws with reference to meiosis. A. alleles carried on homologs (sketch these) 1. homologs segregate during meiosis 2. gametes carry one allele or the other, but not both B. when two pairs of alternate alleles carried on two pairs of homologs 1. homologs separate during ...
sickle-shaped
... Two of the genes that code for proteins that cause this condition are found on only on the X chromosome. Because of this, males have an increased risk of inheriting this disorder because it is a sex-linked trait. ...
... Two of the genes that code for proteins that cause this condition are found on only on the X chromosome. Because of this, males have an increased risk of inheriting this disorder because it is a sex-linked trait. ...
Giant chromosomes
... be incubated with a radioactive RNA probe. • Autoradiography can be used to visualize the precise location where the gene is being transcribed. ...
... be incubated with a radioactive RNA probe. • Autoradiography can be used to visualize the precise location where the gene is being transcribed. ...
Problem Set 2
... space, you find that it has a rather unusual meiosis. In D. webbae, cells destined to undergo meiosis skip S-phase, and then undergo only the first meiotic division. Draw out prophase, metaphase, and anaphase of meiosis, and the daughter cells produced by D. webbae showing the chromosomes. Assume D. ...
... space, you find that it has a rather unusual meiosis. In D. webbae, cells destined to undergo meiosis skip S-phase, and then undergo only the first meiotic division. Draw out prophase, metaphase, and anaphase of meiosis, and the daughter cells produced by D. webbae showing the chromosomes. Assume D. ...
Class Presentation Questions 12
... 11. If non-disjunction occurs, abnormal numbers of chromosomes may find their way to __________, & a disorder of _______________________ numbers may result. 12. If two copies of an autosomal chromosome fail to separate during meiosis, an individual may be form with ____________ copies of a chromosom ...
... 11. If non-disjunction occurs, abnormal numbers of chromosomes may find their way to __________, & a disorder of _______________________ numbers may result. 12. If two copies of an autosomal chromosome fail to separate during meiosis, an individual may be form with ____________ copies of a chromosom ...
Genetics - TeacherWeb
... • Law of Dominance: One gene can mask another gene (dominant versus recessive) Phenotype: the appearance of the organism Genotype: the arrangement of genes ...
... • Law of Dominance: One gene can mask another gene (dominant versus recessive) Phenotype: the appearance of the organism Genotype: the arrangement of genes ...
Meiosis_Intro
... • Understand the need to undergo meiosis as sexual organisms – to produce change or variation ...
... • Understand the need to undergo meiosis as sexual organisms – to produce change or variation ...
Karyotype
A karyotype (from Greek κάρυον karyon, ""kernel"", ""seed"", or ""nucleus"", and τύπος typos, ""general form"") is the number and appearance of chromosomes in the nucleus of a eukaryotic cell. The term is also used for the complete set of chromosomes in a species, or an individual organism.Karyotypes describe the chromosome count of an organism, and what these chromosomes look like under a light microscope. Attention is paid to their length, the position of the centromeres, banding pattern, any differences between the sex chromosomes, and any other physical characteristics. The preparation and study of karyotypes is part of cytogenetics. The study of whole sets of chromosomes is sometimes known as karyology. The chromosomes are depicted (by rearranging a photomicrograph) in a standard format known as a karyogram or idiogram: in pairs, ordered by size and position of centromere for chromosomes of the same size.The basic number of chromosomes in the somatic cells of an individual or a species is called the somatic number and is designated 2n. Thus, in humans 2n = 46. In the germ-line (the sex cells) the chromosome number is n (humans: n = 23).p28So, in normal diploid organisms, autosomal chromosomes are present in two copies. There may, or may not, be sex chromosomes. Polyploid cells have multiple copies of chromosomes and haploid cells have single copies.The study of karyotypes is important for cell biology and genetics, and the results may be used in evolutionary biology (karyosystematics) and medicine. Karyotypes can be used for many purposes; such as to study chromosomal aberrations, cellular function, taxonomic relationships, and to gather information about past evolutionary events.