Sex chromosome
... Sex of an XY fly with 2 sets of autosomes? Sex of a fly with with 2 sets of autosomes, 1 X chromosome Sex of a triploid fly with 2 X chromosomes? ...
... Sex of an XY fly with 2 sets of autosomes? Sex of a fly with with 2 sets of autosomes, 1 X chromosome Sex of a triploid fly with 2 X chromosomes? ...
Final Review - Iowa State University
... Telophase-chromosomes de-condense and the nuclear envelope re-forms. Cytokinesis occurs and separates the mother cell into 2 daughter cells 45) Draw a Punnett squire for a heterozygote male crossed with a heterozygote female ...
... Telophase-chromosomes de-condense and the nuclear envelope re-forms. Cytokinesis occurs and separates the mother cell into 2 daughter cells 45) Draw a Punnett squire for a heterozygote male crossed with a heterozygote female ...
Unit 5 Test Review
... Structure found only in animal cells that the spindle fibers come from Event during Prophase I, when parts of homologous chromosomes trade pieces Reproduction involving only one parent Structure of two homologous chromosomes together during meiosis; has 4 chromatids Alternates between interphase and ...
... Structure found only in animal cells that the spindle fibers come from Event during Prophase I, when parts of homologous chromosomes trade pieces Reproduction involving only one parent Structure of two homologous chromosomes together during meiosis; has 4 chromatids Alternates between interphase and ...
Name Period Chapter 12 Genetics Lesson 1: The Genetic Code
... 1. Walter Sutton studied grasshoppers to discover how sex cells (eggs and sperm) form. 2. He hypothesized that chromosomes are the key to understanding how offspring have traits similar to those of their parents. 3. He discovered that grasshopper sex cells have ½ of the number of chromosomes found i ...
... 1. Walter Sutton studied grasshoppers to discover how sex cells (eggs and sperm) form. 2. He hypothesized that chromosomes are the key to understanding how offspring have traits similar to those of their parents. 3. He discovered that grasshopper sex cells have ½ of the number of chromosomes found i ...
Cellular Reproduction
... It all depends on the chromosome alignment at Metaphase I Sources of Genetic Diversity Crossing over The random alignment of chromosomes at Metaphase I Even without crossing over, there are 8,388,608 different possible gametes that can form The random union of sperm and egg The original variation at ...
... It all depends on the chromosome alignment at Metaphase I Sources of Genetic Diversity Crossing over The random alignment of chromosomes at Metaphase I Even without crossing over, there are 8,388,608 different possible gametes that can form The random union of sperm and egg The original variation at ...
BICH/GENE 431 KNOWLEDGE OBJECTIVES Chapter 22 – Model
... - advantages: simplest multicellular model organism, relatively simple body plan, rapid development, lots of progeny - life cycle - used to study programmed cell death (apoptosis), RNAi (RNA interference), genes in aging Fruit fly (Drosophila melanogaster) - advantages: multicellular, many genetic m ...
... - advantages: simplest multicellular model organism, relatively simple body plan, rapid development, lots of progeny - life cycle - used to study programmed cell death (apoptosis), RNAi (RNA interference), genes in aging Fruit fly (Drosophila melanogaster) - advantages: multicellular, many genetic m ...
BioH_Cell Division
... Cytokinesis: is the splitting of the cytoplasm to produce 2 daughter cells. Although each daughter cell may differ in size & shape, they are genetically identical to each other & the original parent cell (2n to 2n). The means by which this process occurs differs in animal & plant cells: a) Animal Ce ...
... Cytokinesis: is the splitting of the cytoplasm to produce 2 daughter cells. Although each daughter cell may differ in size & shape, they are genetically identical to each other & the original parent cell (2n to 2n). The means by which this process occurs differs in animal & plant cells: a) Animal Ce ...
Ch - TeacherWeb
... B. Nondisjunction: cell division during which sister chromatids fails to separate properly; occurs in any organism where gametes are produced through meiosis 1. nondisjunction in meiosis I or II results in gametes that have the incorrect number of chromosomes 2. when one of these gametes fertilizes ...
... B. Nondisjunction: cell division during which sister chromatids fails to separate properly; occurs in any organism where gametes are produced through meiosis 1. nondisjunction in meiosis I or II results in gametes that have the incorrect number of chromosomes 2. when one of these gametes fertilizes ...
7.1 Chromosomes and Phenotype
... – They are either recessive or dominant • One recessive disorder is Cystic Fibrosis – Is a disease that causes excessive production of mucus that causes blockage of pancreatic ducts, intestines, and bronchi, it is fatal – A heterozygote for a recessive disorder is a carrier. ...
... – They are either recessive or dominant • One recessive disorder is Cystic Fibrosis – Is a disease that causes excessive production of mucus that causes blockage of pancreatic ducts, intestines, and bronchi, it is fatal – A heterozygote for a recessive disorder is a carrier. ...
Cell Growth and Cell Division Powerpoint
... • Chromosomes line up along the middle of the cell metaphase plate • Spindle fibers attach to the centromeres of each chromosome ...
... • Chromosomes line up along the middle of the cell metaphase plate • Spindle fibers attach to the centromeres of each chromosome ...
Reproduction and Genetics Notes
... 9. Meiosis: a process in cell division during which the number of chromosomes decreases to half the original number, which results in the production of sex cells. a. Peoples normal diploid body cell has 46 chromosomes (two sets of 23) b. Peoples normal haploid sex cells have 23 chromosomes c. Don’t ...
... 9. Meiosis: a process in cell division during which the number of chromosomes decreases to half the original number, which results in the production of sex cells. a. Peoples normal diploid body cell has 46 chromosomes (two sets of 23) b. Peoples normal haploid sex cells have 23 chromosomes c. Don’t ...
Slide 1 - Brookwood High School
... the sex chromosomes Y chromosome much smaller than X so many genes only found on X Males express all X-linked alleles since they have only one X chromosome – even recessives Ex. Color blindness, hemophilia ...
... the sex chromosomes Y chromosome much smaller than X so many genes only found on X Males express all X-linked alleles since they have only one X chromosome – even recessives Ex. Color blindness, hemophilia ...
Evolution
... Implications for sexual reproduction The genes themselves do not change or blend during reproduction If chromosomes and loci of the male and female do not match perfectly, reproduction cannot occur (prevents interbreeding) Offspring will resemble parents because genes must match at each locus, but ...
... Implications for sexual reproduction The genes themselves do not change or blend during reproduction If chromosomes and loci of the male and female do not match perfectly, reproduction cannot occur (prevents interbreeding) Offspring will resemble parents because genes must match at each locus, but ...
Ch 13 Notes - FacStaff Home Page for CBU
... In all three life cycles, the halving and doubling of chromosomes contributes to genetic variation in offspring. Meiosis reduces chromosome number Like mitosis, meiosis is preceded by the replication of chromosomes. Meiosis takes place in two sets of cell divisions, called meiosis I and meiosis II. ...
... In all three life cycles, the halving and doubling of chromosomes contributes to genetic variation in offspring. Meiosis reduces chromosome number Like mitosis, meiosis is preceded by the replication of chromosomes. Meiosis takes place in two sets of cell divisions, called meiosis I and meiosis II. ...
Chromosomes & Heredity - Fox Valley Lutheran High School
... Sturtevant reasoned the frequency of crossing over occurs in proportion to the distance of the genes on the chromosome ...
... Sturtevant reasoned the frequency of crossing over occurs in proportion to the distance of the genes on the chromosome ...
Jeopardy Higher Level Genetics HANNAH
... AFTER THE PATERNAL & MATERNAL CHROMATIDS INTERTWINE & BREAK AT EXACTLY THE SAME POSITION, & THE TWO SEGMENTS CONNECT TO THE CORRESPONDING POSTION ON THE OTHER CHROMATID, THE PLACE WHERE THE TWO CONNECT TO EACHOTHER IS CALLED A CHIASTMA (PLURAL CHIASMATA) ...
... AFTER THE PATERNAL & MATERNAL CHROMATIDS INTERTWINE & BREAK AT EXACTLY THE SAME POSITION, & THE TWO SEGMENTS CONNECT TO THE CORRESPONDING POSTION ON THE OTHER CHROMATID, THE PLACE WHERE THE TWO CONNECT TO EACHOTHER IS CALLED A CHIASTMA (PLURAL CHIASMATA) ...
Biology Review - Weiss World of Science
... Meiosis produces specialized sex cells called ____________________ that have ___________ the number of chromosomes as body cells. --> human sperm has ______ chromosomes and eggs have ______ chromosomes (6.1) ...
... Meiosis produces specialized sex cells called ____________________ that have ___________ the number of chromosomes as body cells. --> human sperm has ______ chromosomes and eggs have ______ chromosomes (6.1) ...
clicker review
... 1 Enzymes catalyze reactions by A supplying energy to speed up a reaction B lowering the energy of activation of a reaction C lowering the delta G of a reaction D changing the equilibrium of a spontaneous reaction E increasing the amount of free energy of a reaction 2 Motor proteins provide for mole ...
... 1 Enzymes catalyze reactions by A supplying energy to speed up a reaction B lowering the energy of activation of a reaction C lowering the delta G of a reaction D changing the equilibrium of a spontaneous reaction E increasing the amount of free energy of a reaction 2 Motor proteins provide for mole ...
Chromosomes
... Gregor Mendel is considered the father of modern genetics. He was an Austrian monk who worked with pea plants. Replaced Blending Theory with Particulate Theory of Inheritance. ...
... Gregor Mendel is considered the father of modern genetics. He was an Austrian monk who worked with pea plants. Replaced Blending Theory with Particulate Theory of Inheritance. ...
Chapter 13 Overview: Variations on a Theme • Living organisms are
... The number of combinations possible when chromosomes assort independently into gametes is 2n, where n is the haploid number ...
... The number of combinations possible when chromosomes assort independently into gametes is 2n, where n is the haploid number ...
Meiosis II
... • Produces sex cells (gametes) • Female gamete – egg • Male gamete - sperm • Reduces the chromosome number • Egg or sperm cells each have only one of each kind of chromosome • Diploid cells (2n) haploid cells (1n) ...
... • Produces sex cells (gametes) • Female gamete – egg • Male gamete - sperm • Reduces the chromosome number • Egg or sperm cells each have only one of each kind of chromosome • Diploid cells (2n) haploid cells (1n) ...
Independent Assortment of Chromosomes
... The number of combinations possible when chromosomes assort independently into gametes is 2n, where n is the haploid number ...
... The number of combinations possible when chromosomes assort independently into gametes is 2n, where n is the haploid number ...
Ploidy
Ploidy is the number of sets of chromosomes in a cell. Usually a gamete (sperm or egg, which fuse into a single cell during the fertilization phase of sexual reproduction) carries a full set of chromosomes that includes a single copy of each chromosome, as aneuploidy generally leads to severe genetic disease in the offspring. The gametic or haploid number (n) is the number of chromosomes in a gamete. Two gametes form a diploid zygote with twice this number (2n, the zygotic or diploid number) i.e. two copies of autosomal chromosomes. For humans, a diploid species, n = 23. A typical human somatic cell contains 46 chromosomes: 2 complete haploid sets, which make up 23 homologous chromosome pairs.Because chromosome number is generally reduced only by the specialized process of meiosis, the somatic cells of the body inherit and maintain the chromosome number of the zygote. However, in many situations somatic cells double their copy number by means of endoreduplication as an aspect of cellular differentiation. For example, the hearts of two-year-old children contain 85% diploid and 15% tetraploid nuclei, but by 12 years of age the proportions become approximately equal, and adults examined contained 27% diploid, 71% tetraploid and 2% octaploid nuclei.Cells are described according to the number of sets present (the ploidy level): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is frequently used to describe cells with three or more sets of chromosomes (triploid or higher ploidy).