21 Cell division and chromosomes
... 4 Mitosis is unlikely to occur in a sperm cell (once sperm cells are formed they do not divide again), a hair cell (they are dead) and a red blood cell (they have no nuclei). 5 If an animal species has 36 chromosomes in its cells, 18 of these came from each parent. 6 The homologous chromosomes are A ...
... 4 Mitosis is unlikely to occur in a sperm cell (once sperm cells are formed they do not divide again), a hair cell (they are dead) and a red blood cell (they have no nuclei). 5 If an animal species has 36 chromosomes in its cells, 18 of these came from each parent. 6 The homologous chromosomes are A ...
state standards - Port Angeles High School
... (1) Describe that genes are carried on chromosomes. (2) Describe that typical animal cells contain two copies of each chromosome, one from each biological parent, with genetic information that regulates body structure and function. (3) Describe the process of mitosis (e.g., the genetic information i ...
... (1) Describe that genes are carried on chromosomes. (2) Describe that typical animal cells contain two copies of each chromosome, one from each biological parent, with genetic information that regulates body structure and function. (3) Describe the process of mitosis (e.g., the genetic information i ...
Meiosis and Genetics Warmups
... 1. The principles of dominance, segregation, and independent assortment were first described by a. Watson b. Morgan c. Mendel d. Avery 2. According to Mendel’s law of segregation, which of the following statements describes what happens to the alleles of a gene pair? a. The alleles are moved to diff ...
... 1. The principles of dominance, segregation, and independent assortment were first described by a. Watson b. Morgan c. Mendel d. Avery 2. According to Mendel’s law of segregation, which of the following statements describes what happens to the alleles of a gene pair? a. The alleles are moved to diff ...
PRACTICE EXAM 3 – Some of this may look familiar, but the exam is
... to make ___ cells. The DNA made in both cells is genetically (identical/different). 8. __________________________________ control the cell cycle and thus cell growth. 9. Cancer cells are different from normal cells in that ___________________________. They are not inhibited by things normal cells ar ...
... to make ___ cells. The DNA made in both cells is genetically (identical/different). 8. __________________________________ control the cell cycle and thus cell growth. 9. Cancer cells are different from normal cells in that ___________________________. They are not inhibited by things normal cells ar ...
anth-260-midterm-review-sheet
... d. sequences of codons code for sequences of amino acids • A primitive trait is one that was inherited from a common ancestor and was replaced because it was poorly adapted to local conditions. a. True b. False • If we found that a species of primate has little to no sexual body dimorphism, what mig ...
... d. sequences of codons code for sequences of amino acids • A primitive trait is one that was inherited from a common ancestor and was replaced because it was poorly adapted to local conditions. a. True b. False • If we found that a species of primate has little to no sexual body dimorphism, what mig ...
No Slide Title
... square with possible blood types for their children. What antibodies and antigens do they each have? ...
... square with possible blood types for their children. What antibodies and antigens do they each have? ...
Genetics of Sesame Street Characters
... • When you fall and scrape the skin off your hands and knees, how does your body make new skin cells to replace the skin cells that were scraped off? • How does your body make sure each new cell has all the chromosomes it needs to have? • How does a baby get his or her genes? ...
... • When you fall and scrape the skin off your hands and knees, how does your body make new skin cells to replace the skin cells that were scraped off? • How does your body make sure each new cell has all the chromosomes it needs to have? • How does a baby get his or her genes? ...
Document
... Huntington’s disease, in which a single codon for a certain amino acid repeats more than 40 times, causing mental deterioration and uncontrolled movements. Some alleles that cause disease in the homozygote can provide an advantage in the heterozygote. The geographic associations between sickle cell ...
... Huntington’s disease, in which a single codon for a certain amino acid repeats more than 40 times, causing mental deterioration and uncontrolled movements. Some alleles that cause disease in the homozygote can provide an advantage in the heterozygote. The geographic associations between sickle cell ...
SBI3UGenetics Unit Test
... Part A: Knowledge Mulitple choice 1. The genotype of an individual that shows the dominant phenotype can be determined by crossing it with an individual that is a) homozygous dominant b) heterozygous recessive c) heterozygous dominant d) homozygous recessive 2. Allels for the same trait separate dur ...
... Part A: Knowledge Mulitple choice 1. The genotype of an individual that shows the dominant phenotype can be determined by crossing it with an individual that is a) homozygous dominant b) heterozygous recessive c) heterozygous dominant d) homozygous recessive 2. Allels for the same trait separate dur ...
Chromosomes and Human Genetics powerpoint
... – Mistakes in DNA replication – Collisions of the DNA molecule with other molecules – Damage from heat or chemical agents ...
... – Mistakes in DNA replication – Collisions of the DNA molecule with other molecules – Damage from heat or chemical agents ...
probability and genetics
... - males produce gametes containing either an X or a Y chromosome - females produce gametes containing the X chromosome - both of these processes occur during meiosis - a zygote that is XX will be female, and an XY zygote will be male SEX LINKAGE - genes found on the X chromosome are said to be X-lin ...
... - males produce gametes containing either an X or a Y chromosome - females produce gametes containing the X chromosome - both of these processes occur during meiosis - a zygote that is XX will be female, and an XY zygote will be male SEX LINKAGE - genes found on the X chromosome are said to be X-lin ...
Chromosomal Basis of Inheritance
... Trisomy 13: Patau Syndrome Both have various physical and mental changes. ...
... Trisomy 13: Patau Syndrome Both have various physical and mental changes. ...
Test Review for Cell Cycle
... 7. Cells are derived from ___________________. A. plants B. the sun C. other cells D. bacteria 8. Humans have ______ chromosome and ________ pairs. A. 46, 23 C. 52, 104 B. 4, 8 D. 20, 40 C. 9. A ________________ is a map that shows all the chromosomes lined up from largest to smallest in pairs. A. C ...
... 7. Cells are derived from ___________________. A. plants B. the sun C. other cells D. bacteria 8. Humans have ______ chromosome and ________ pairs. A. 46, 23 C. 52, 104 B. 4, 8 D. 20, 40 C. 9. A ________________ is a map that shows all the chromosomes lined up from largest to smallest in pairs. A. C ...
Mitosis EXTRA CREDIT Study Guide
... 1. What happens to the ratio of volume to surface area, as a cells’ size increases? 2. Why are cells small? 3. Which cell would produce more waste: cell with a volume of 10cm3, or one with a surface area of 10cm2? Explain ...
... 1. What happens to the ratio of volume to surface area, as a cells’ size increases? 2. Why are cells small? 3. Which cell would produce more waste: cell with a volume of 10cm3, or one with a surface area of 10cm2? Explain ...
Crossing-Over Introduction
... genes we inherit, and thus our physical traits, is in part due to a process our chromosomes undergo, known as genetic recombination. Genetic recombination happens during meiosis. Inside the cells that produce sperm and eggs, homologous chromosomes become paired. Homologous chromosomes contain all sa ...
... genes we inherit, and thus our physical traits, is in part due to a process our chromosomes undergo, known as genetic recombination. Genetic recombination happens during meiosis. Inside the cells that produce sperm and eggs, homologous chromosomes become paired. Homologous chromosomes contain all sa ...
B1 - Knockhardy
... Instructions for how an organism develops are found in the nucleus • chromosomes are found in cell nuclei - they come in pairs • every human body cell has 23 chromosomes • genes are sections of DNA molecules that make up chromosomes • genes are instructions on how to make proteins - they are pairs • ...
... Instructions for how an organism develops are found in the nucleus • chromosomes are found in cell nuclei - they come in pairs • every human body cell has 23 chromosomes • genes are sections of DNA molecules that make up chromosomes • genes are instructions on how to make proteins - they are pairs • ...
Physical Science EOC Review Name
... ii. Abnormal number of chromosomes is a result of ______________________________ which occurs during meiosis. e. If the mutant cell is a body cell (somatic cell) the daughter cells can be affected by the altered DNA and the mutation (will or will not) be passed to the offspring. i. (T/F) Body cell m ...
... ii. Abnormal number of chromosomes is a result of ______________________________ which occurs during meiosis. e. If the mutant cell is a body cell (somatic cell) the daughter cells can be affected by the altered DNA and the mutation (will or will not) be passed to the offspring. i. (T/F) Body cell m ...
Unit Plan Assessments
... 10. The arctic hare turns brown in the summer and white in the winter. What most likely influences this change? a. Gene and the environment b. The environment alone c. Dominant alleles d. Codominant alleles 11. If an organism’s diploid number is 24, the haploid number is _______ a. 14 b. 12 c. 6 d. ...
... 10. The arctic hare turns brown in the summer and white in the winter. What most likely influences this change? a. Gene and the environment b. The environment alone c. Dominant alleles d. Codominant alleles 11. If an organism’s diploid number is 24, the haploid number is _______ a. 14 b. 12 c. 6 d. ...
Slide 1
... before symptoms start in parents 1. Neurofibromatosis – Chromosome 17 - (called Von Recklinghausen) develop large brown spots on skin that develop into tumors and cancer. ...
... before symptoms start in parents 1. Neurofibromatosis – Chromosome 17 - (called Von Recklinghausen) develop large brown spots on skin that develop into tumors and cancer. ...
document
... New species can also arise within the same geographic area as the parent species • In sympatric speciation, a new species may arise without geographic isolation – A failure in meiosis can produce diploid gametes – Self-fertilization can then produce a tetraploid zygote Parent species ...
... New species can also arise within the same geographic area as the parent species • In sympatric speciation, a new species may arise without geographic isolation – A failure in meiosis can produce diploid gametes – Self-fertilization can then produce a tetraploid zygote Parent species ...
big
... • In some creatures these are have similar size, shape and activity; in others they can be quite different. • Often large, non-motile eggs, and small, motile sperm ...
... • In some creatures these are have similar size, shape and activity; in others they can be quite different. • Often large, non-motile eggs, and small, motile sperm ...
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.