Karyotype Lab File
... 4. Suppose that karyotyping revealed that a person is not able to produce Enzyme A. The enzyme is needed for metabolizing Protein B. Without the enzyme, the person will develop a serious illness. How could the knowledge from this karyotype be helpful in preventing this disease? ...
... 4. Suppose that karyotyping revealed that a person is not able to produce Enzyme A. The enzyme is needed for metabolizing Protein B. Without the enzyme, the person will develop a serious illness. How could the knowledge from this karyotype be helpful in preventing this disease? ...
Chapter 6.1 Chromosomes and Cell Reproduction
... All the eggs a female will ever produce are present in her ovaries at birth As female ages, eggs can accumulate an increasing amount of damage. ...
... All the eggs a female will ever produce are present in her ovaries at birth As female ages, eggs can accumulate an increasing amount of damage. ...
GENETICS REVISION CARDs
... Gene- Units of inheritance usually occurring at specific locations, or loci, on a chromosome. (A section of DNA) These units are responsible for hereditary characteristics in plants and animals. Chromatin-DNA in its normal, functional state, condenses to form chromosomes Chromatid-is one of the two ...
... Gene- Units of inheritance usually occurring at specific locations, or loci, on a chromosome. (A section of DNA) These units are responsible for hereditary characteristics in plants and animals. Chromatin-DNA in its normal, functional state, condenses to form chromosomes Chromatid-is one of the two ...
Chromosomal evolution and speciation
... Similar repeated change in many chromosomes at once. Not fully explained. For example, the primitive chromosome number of chromosomes in Mus musculus domesticus, the house mouse, is 2n = 40, all acrocentrics. However, by a series of Robertsonian fusions, there are multiple chromosomal races with les ...
... Similar repeated change in many chromosomes at once. Not fully explained. For example, the primitive chromosome number of chromosomes in Mus musculus domesticus, the house mouse, is 2n = 40, all acrocentrics. However, by a series of Robertsonian fusions, there are multiple chromosomal races with les ...
Lecture 6: Units of Selection cont`d
... Father-son transmission Impossible because M are haploid? PSR : on B chromosome B= small, unusual, nonessential chromosomes that don't go through meiosis normally • high meiotic drive: most sperm get B chromosome ...
... Father-son transmission Impossible because M are haploid? PSR : on B chromosome B= small, unusual, nonessential chromosomes that don't go through meiosis normally • high meiotic drive: most sperm get B chromosome ...
PPT
... • Physical location on the chromosome is called a genetic LOCUS (plural = “loci”) – e.g., the “eye-color locus”, Adh locus ...
... • Physical location on the chromosome is called a genetic LOCUS (plural = “loci”) – e.g., the “eye-color locus”, Adh locus ...
Module 16 Speciation and the Pace of Evolution
... einkorn wheat (Triticum boeoticum) has two sets of chromosomes and produces small seeds. (b) Durum wheat (Triticum durum), which is used to make pasta, was bred to have four sets of chromosomes and produces mediumsized seeds. (c) Common wheat (Triticum aestivum), which is used mostly for bread, was ...
... einkorn wheat (Triticum boeoticum) has two sets of chromosomes and produces small seeds. (b) Durum wheat (Triticum durum), which is used to make pasta, was bred to have four sets of chromosomes and produces mediumsized seeds. (c) Common wheat (Triticum aestivum), which is used mostly for bread, was ...
Meiosis
... • Physical location on the chromosome is called a genetic LOCUS (plural = “loci”) – e.g., the “eye-color locus”, Adh locus ...
... • Physical location on the chromosome is called a genetic LOCUS (plural = “loci”) – e.g., the “eye-color locus”, Adh locus ...
Name: Date: Period: _____ Unit 1 Notes, Part 3 – The Importance of
... 6. Since mutations can introduce new gene sequences / alleles into a population of organisms, we say that mutations have the potential to increase genetic variation (the number of possible genotypes) in a population. 7. 23 of the 46 chromosomes in one of your cells came from your mother, and the ot ...
... 6. Since mutations can introduce new gene sequences / alleles into a population of organisms, we say that mutations have the potential to increase genetic variation (the number of possible genotypes) in a population. 7. 23 of the 46 chromosomes in one of your cells came from your mother, and the ot ...
Karyotyping
... problems with a person’s growth, development, and body functions. A few of the abnormalities that can be found are Down syndrome, Turner syndrome, Klinefelter’s syndrome and the Philadelphia chromosome. Down syndrome is caused by an extra number 21 chromosome. Turner syndrome is a defect that result ...
... problems with a person’s growth, development, and body functions. A few of the abnormalities that can be found are Down syndrome, Turner syndrome, Klinefelter’s syndrome and the Philadelphia chromosome. Down syndrome is caused by an extra number 21 chromosome. Turner syndrome is a defect that result ...
bill nye- genes video quiz
... 1. The way you are and the way you look are controlled by your _____________________. 2. What are the bundles of chemicals in our body called? _______________ 3. _____________________________ are very, very long DNA molecules found in almost every cell of every living thing. 4. Genes are like a ____ ...
... 1. The way you are and the way you look are controlled by your _____________________. 2. What are the bundles of chemicals in our body called? _______________ 3. _____________________________ are very, very long DNA molecules found in almost every cell of every living thing. 4. Genes are like a ____ ...
bill nye- genes video quiz
... 1. The way you are and the way you look are controlled by your _____________________. 2. What are the bundles of chemicals in our body called? _______________ 3. _____________________________ are very, very long DNA molecules found in almost every cell of every living thing. 4. Genes are like a ____ ...
... 1. The way you are and the way you look are controlled by your _____________________. 2. What are the bundles of chemicals in our body called? _______________ 3. _____________________________ are very, very long DNA molecules found in almost every cell of every living thing. 4. Genes are like a ____ ...
Meiosis
... • Genes are passed to the next generation through reproductive cells called gametes (sperm and eggs) • Each gene has a specific location called a locus on a certain chromosome • In asexual reproduction, one parent produces genetically identical offspring by mitosis ...
... • Genes are passed to the next generation through reproductive cells called gametes (sperm and eggs) • Each gene has a specific location called a locus on a certain chromosome • In asexual reproduction, one parent produces genetically identical offspring by mitosis ...
Document
... relationship of complete dominance - recessive. For example: RRYY/rryy parents result in F1 offspring that are heterozygous for both R and Y (RrYy).The rules of meiosis, as they apply to the dihybrid, are codified in Mendel's first law and Mendel's second law, which are also called the Law of Segreg ...
... relationship of complete dominance - recessive. For example: RRYY/rryy parents result in F1 offspring that are heterozygous for both R and Y (RrYy).The rules of meiosis, as they apply to the dihybrid, are codified in Mendel's first law and Mendel's second law, which are also called the Law of Segreg ...
Slide 1
... that a crossover between them is virtually certain. In this case, the frequency of recombination reaches is its maximum value of 50% ...
... that a crossover between them is virtually certain. In this case, the frequency of recombination reaches is its maximum value of 50% ...
View Ch. 13 PowerPoint here.
... • Based on genetic recombination (crossing over) between genes • If crossover occurs, parental alleles are recombined producing recombinant gametes • Genes close together on a single chromosome are said to be linked. • As physical distance on a chromosome increases, so does the probability of recomb ...
... • Based on genetic recombination (crossing over) between genes • If crossover occurs, parental alleles are recombined producing recombinant gametes • Genes close together on a single chromosome are said to be linked. • As physical distance on a chromosome increases, so does the probability of recomb ...
Name
... Suppose you had 23 pairs of gloves. You would have a total of 46 gloves that you could divide into two sets, 23 right and 23 left. Similarly, your body cells have 23 pairs of chromosomes for a total of 46 that can be divided into two sets: 23 from your mother and 23 from your father. Just as you use ...
... Suppose you had 23 pairs of gloves. You would have a total of 46 gloves that you could divide into two sets, 23 right and 23 left. Similarly, your body cells have 23 pairs of chromosomes for a total of 46 that can be divided into two sets: 23 from your mother and 23 from your father. Just as you use ...
Chapter 15
... I. Morgan and Friends 3. Crossing Over – sections of chromosomes switching places - genetic recombination – new traits in offspring - parent types – offspring like parents - recombinant – offspring w/ new traits - a 50% frequency of recombination is observed for 2 genes on different chromosomes - ...
... I. Morgan and Friends 3. Crossing Over – sections of chromosomes switching places - genetic recombination – new traits in offspring - parent types – offspring like parents - recombinant – offspring w/ new traits - a 50% frequency of recombination is observed for 2 genes on different chromosomes - ...
Crossing over - JeongAPbiology
... 1) synapsis and crossing over do not occur in mitosis 2) at metaphase I, homologous pairs are lined up, but in mitosis invidivual chromosomes lined up 3) Anaphase 1 chromosomes move to opposite poles, but in mitosis, the sister chromatids ...
... 1) synapsis and crossing over do not occur in mitosis 2) at metaphase I, homologous pairs are lined up, but in mitosis invidivual chromosomes lined up 3) Anaphase 1 chromosomes move to opposite poles, but in mitosis, the sister chromatids ...
Chapter 13 PowerPoint.ppt
... • Ensures an equal expression of genes from the sex chromosomes even though females have 2 X chromosomes and males have only 1 • In each female cell, 1 X chromosome is inactivated and is highly condensed into a Barr body • Females heterozygous for genes on the X chromosome are genetic mosaics ...
... • Ensures an equal expression of genes from the sex chromosomes even though females have 2 X chromosomes and males have only 1 • In each female cell, 1 X chromosome is inactivated and is highly condensed into a Barr body • Females heterozygous for genes on the X chromosome are genetic mosaics ...
Chapter 13 PowerPoint
... • Ensures an equal expression of genes from the sex chromosomes even though females have 2 X chromosomes and males have only 1 • In each female cell, 1 X chromosome is inactivated and is highly condensed into a Barr body • Females heterozygous for genes on the X chromosome are genetic mosaics ...
... • Ensures an equal expression of genes from the sex chromosomes even though females have 2 X chromosomes and males have only 1 • In each female cell, 1 X chromosome is inactivated and is highly condensed into a Barr body • Females heterozygous for genes on the X chromosome are genetic mosaics ...
Meiosis Formation of Gametes (Eggs & Sperm)
... chromosome replication Two meiotic divisions --- Meiosis I and Meiosis II Called Reduction- division Original cell is diploid (2n) Four daughter cells produced that are monoploid (1n) ...
... chromosome replication Two meiotic divisions --- Meiosis I and Meiosis II Called Reduction- division Original cell is diploid (2n) Four daughter cells produced that are monoploid (1n) ...
Polyploid
Polyploid cells and organisms are those containing more than two paired (homologous) sets of chromosomes. Most species whose cells have nuclei (Eukaryotes) are diploid, meaning they have two sets of chromosomes—one set inherited from each parent. However, polyploidy is found in some organisms and is especially common in plants. In addition, polyploidy occurs in some tissues of animals that are otherwise diploid, such as human muscle tissues. This is known as endopolyploidy. Species whose cells do not have nuclei, that is, Prokaryotes, may be polyploid organisms, as seen in the large bacterium Epulopicium fishelsoni [1]. Hence ploidy is defined with respect to a cell. Most eukaryotes have diploid somatic cells, but produce haploid gametes (eggs and sperm) by meiosis. A monoploid has only one set of chromosomes, and the term is usually only applied to cells or organisms that are normally diploid. Male bees and other Hymenoptera, for example, are monoploid. Unlike animals, plants and multicellular algae have life cycles with two alternating multicellular generations. The gametophyte generation is haploid, and produces gametes by mitosis, the sporophyte generation is diploid and produces spores by meiosis.Polyploidy refers to a numerical change in a whole set of chromosomes. Organisms in which a particular chromosome, or chromosome segment, is under- or overrepresented are said to be aneuploid (from the Greek words meaning ""not"", ""good"", and ""fold""). Therefore the distinction between aneuploidy and polyploidy is that aneuploidy refers to a numerical change in part of the chromosome set, whereas polyploidy refers to a numerical change in the whole set of chromosomes.Polyploidy may occur due to abnormal cell division, either during mitosis, or commonly during metaphase I in meiosis.Polyploidy occurs in some animals, such as goldfish, salmon, and salamanders, but is especially common among ferns and flowering plants (see Hibiscus rosa-sinensis), including both wild and cultivated species. Wheat, for example, after millennia of hybridization and modification by humans, has strains that are diploid (two sets of chromosomes), tetraploid (four sets of chromosomes) with the common name of durum or macaroni wheat, and hexaploid (six sets of chromosomes) with the common name of bread wheat. Many agriculturally important plants of the genus Brassica are also tetraploids.Polyploidy can be induced in plants and cell cultures by some chemicals: the best known is colchicine, which can result in chromosome doubling, though its use may have other less obvious consequences as well. Oryzalin will also double the existing chromosome content.