Genetics Spring 2008 Exam 1 Wolf Notes: Below are the correct
... 12. Drosophila melanogaster has four pairs of chromosomes. Sperm from this species are formed by a meiotic process in which homologous chromosomes pair and segregate but do not undergo crossing over. How many genetically different kinds of sperm could be produced by a Drosophila melanogaster male? A ...
... 12. Drosophila melanogaster has four pairs of chromosomes. Sperm from this species are formed by a meiotic process in which homologous chromosomes pair and segregate but do not undergo crossing over. How many genetically different kinds of sperm could be produced by a Drosophila melanogaster male? A ...
slides
... Short and have a low hairline Broad chest and folds of skin on neck Normal intelligence Sterility ...
... Short and have a low hairline Broad chest and folds of skin on neck Normal intelligence Sterility ...
Advantages and Disadvantages of Haplodiploidy on Whitefly By
... diplo-diploidy, arrhenotoxy, thelyotoxy, and parahaploidy (Hoy, 2003). Both sexes of many arthropods are diploid (2n, diplo-diploidy), whereas others have haploid males and diploid females (n and 2n, haplodiploidy or arrhenotoxy). Other species consist primarily of diploid females where haploid male ...
... diplo-diploidy, arrhenotoxy, thelyotoxy, and parahaploidy (Hoy, 2003). Both sexes of many arthropods are diploid (2n, diplo-diploidy), whereas others have haploid males and diploid females (n and 2n, haplodiploidy or arrhenotoxy). Other species consist primarily of diploid females where haploid male ...
Chemistry - cloudfront.net
... their prey, a newt. As the newt evolves ever more potent toxins to ward off predators, the snakes become more and more resistant to the toxin. This is best described as: a. fitness b. adaptation c. coevolution d. speciation ...
... their prey, a newt. As the newt evolves ever more potent toxins to ward off predators, the snakes become more and more resistant to the toxin. This is best described as: a. fitness b. adaptation c. coevolution d. speciation ...
Mendel`s Legacy
... autosomes and are not related to the sex of the individual. - Tay-Sachs disease – a disease where the body lacks the ability of producing a vital enzyme within the lysosomes of the nervous system. These individuals are normal at birth, but by 8 months the lysosomes rupture and break down the brain c ...
... autosomes and are not related to the sex of the individual. - Tay-Sachs disease – a disease where the body lacks the ability of producing a vital enzyme within the lysosomes of the nervous system. These individuals are normal at birth, but by 8 months the lysosomes rupture and break down the brain c ...
1a.Genetics Key Terms
... The heterozygous offspring has a phenotype that is a mixture between the phenotypes of the two homozygous organisms. For example, a red snapdragon (R1R1) crossed with a white snapdragon (R2R2) produces a pink snapdragon (R1R2) Characteristics that are not clearly defined e.g. height) Characteristics ...
... The heterozygous offspring has a phenotype that is a mixture between the phenotypes of the two homozygous organisms. For example, a red snapdragon (R1R1) crossed with a white snapdragon (R2R2) produces a pink snapdragon (R1R2) Characteristics that are not clearly defined e.g. height) Characteristics ...
Population Genetics, Speciation, and Classification
... frequencies of a gene in a population will remain constant, as long as evolutionary forces are not acting. H-W therefore provides a baseline, for a population that is not evolving. For a population to be in H-W equilibrium, the following ...
... frequencies of a gene in a population will remain constant, as long as evolutionary forces are not acting. H-W therefore provides a baseline, for a population that is not evolving. For a population to be in H-W equilibrium, the following ...
Biology 303 EXAM II 3/14/00 NAME
... Trisomy 21, or Down syndrome, occurs when there is a normal diploid chromosomal complement of 46 chromosomes plus one (extra) chromosome #21. Such individuals therefore have 47 chromosomes. While there is impaired fertility of both sexes, females are more likely to be fertile than males. Assume that ...
... Trisomy 21, or Down syndrome, occurs when there is a normal diploid chromosomal complement of 46 chromosomes plus one (extra) chromosome #21. Such individuals therefore have 47 chromosomes. While there is impaired fertility of both sexes, females are more likely to be fertile than males. Assume that ...
Mendel`s Laws of Segregation
... 3. “If the two alleles differ, then one, the dominant allele, is fully expressed in the organism's appearance; the other, the recessive allele, has no noticeable effect on the organism's appearance.” ...
... 3. “If the two alleles differ, then one, the dominant allele, is fully expressed in the organism's appearance; the other, the recessive allele, has no noticeable effect on the organism's appearance.” ...
• Individuals in every population vary from one another in their traits
... their effect if they are present on one chromosome; recessive alleles exhibit their effect only when they are on both chromosomes An organism’s particular combination of paired alleles is its genotype; the traits produced by those alleles result in the organism’s phenotype A gene composed of two ...
... their effect if they are present on one chromosome; recessive alleles exhibit their effect only when they are on both chromosomes An organism’s particular combination of paired alleles is its genotype; the traits produced by those alleles result in the organism’s phenotype A gene composed of two ...
Genetics Study Guide
... used pea plants for his studies. • Short growing period/Easy to Grow • 7 traits in 2 distinct forms • Produces many offspring ...
... used pea plants for his studies. • Short growing period/Easy to Grow • 7 traits in 2 distinct forms • Produces many offspring ...
Chapter 6 Expanded Notes
... Hence, understanding cell division is important for this section. However, it also makes this section partly review and easier, by comparison. So here we go. Since this section deals with genetics, the best place to start is to define genetics. Many people today either get confused, or misled, or da ...
... Hence, understanding cell division is important for this section. However, it also makes this section partly review and easier, by comparison. So here we go. Since this section deals with genetics, the best place to start is to define genetics. Many people today either get confused, or misled, or da ...
Balancer Chromosomes – An Optional Minitutorial What follows is a
... This cross would yield three possible genotypes, Cy/Cy (all die), Cy/m (live unless m is a dominant lethal; these flies have the curly wings) and m/m (might survive; but won’t have the curly wings). The fact that there are inversions built into the balancer chromosome means that crossover cannot occ ...
... This cross would yield three possible genotypes, Cy/Cy (all die), Cy/m (live unless m is a dominant lethal; these flies have the curly wings) and m/m (might survive; but won’t have the curly wings). The fact that there are inversions built into the balancer chromosome means that crossover cannot occ ...
PowerPoint Lecture Chapter 7
... bases are exactly the same in all people 3. Less than 2% of genome actually codes for proteins ...
... bases are exactly the same in all people 3. Less than 2% of genome actually codes for proteins ...
A human has 46 chromosomes normally, 44 of autosomal
... ・part of a chromosome is missing Example; ○Cri du chat syndrome ・part of the short arm of chromosome 5 is deleted ・symptoms; small head, moon face, cry sounds like a kitten mewing, mental retardation (3)Inversion (4)Insertion with translocation (5)Ring chromosome (6)Isochromosome (7)Duplication 2. N ...
... ・part of a chromosome is missing Example; ○Cri du chat syndrome ・part of the short arm of chromosome 5 is deleted ・symptoms; small head, moon face, cry sounds like a kitten mewing, mental retardation (3)Inversion (4)Insertion with translocation (5)Ring chromosome (6)Isochromosome (7)Duplication 2. N ...
Unit 07 - Lessons 4-6
... • Chromosomes contain many genes. – The farther apart two genes are located on a chromosome, the more likely they are to be separated by crossing over. – Genes located close together on a chromosome tend to be inherited together, which is called genetic linkage. • Genetic linkage allows the dist ...
... • Chromosomes contain many genes. – The farther apart two genes are located on a chromosome, the more likely they are to be separated by crossing over. – Genes located close together on a chromosome tend to be inherited together, which is called genetic linkage. • Genetic linkage allows the dist ...
EXAM 4-2007CH12-14-15-16.doc
... C) If they mate when they are put together then they are the same species. D) If they mate successfully and their offspring can also mate successfully all are the same species. E) If they can both asexually reproduce and ...
... C) If they mate when they are put together then they are the same species. D) If they mate successfully and their offspring can also mate successfully all are the same species. E) If they can both asexually reproduce and ...
principles of inheritance and variation
... two opposing traits, e.g., tall or dwarf plants, yellow or green seeds. This allowed him to set up a basic framework of rules governing inheritance, which was expanded on by later scientists to account for all the diverse natural observations and the complexity inherent in them. A true breeding lin ...
... two opposing traits, e.g., tall or dwarf plants, yellow or green seeds. This allowed him to set up a basic framework of rules governing inheritance, which was expanded on by later scientists to account for all the diverse natural observations and the complexity inherent in them. A true breeding lin ...
4 Heredity and Reproduction
... birth and major changes that occur in each trimester of pregnancy. SC.912.L.16.13 ...
... birth and major changes that occur in each trimester of pregnancy. SC.912.L.16.13 ...
Pedigrees and Sex linked Traits
... 3. How many female offspring did the first generation have? How many of the offspring in generation 2 were affected? 4. Describe individual 4 in generation 3 ...
... 3. How many female offspring did the first generation have? How many of the offspring in generation 2 were affected? 4. Describe individual 4 in generation 3 ...
Mutations
... Frequency of Mutation • In the absence of outside influences, gene mutations arise spontaneously . • Mutation rate varies from species to species, allele to allele. • Most mutant alleles are recessiveexpressing themselves when two recessive alleles meet in future ...
... Frequency of Mutation • In the absence of outside influences, gene mutations arise spontaneously . • Mutation rate varies from species to species, allele to allele. • Most mutant alleles are recessiveexpressing themselves when two recessive alleles meet in future ...
Topic 1 – Classification, variation and inheritance
... o Amphibians – young amphibians have gills but adult amphibians usually have lungs and can absorb oxygen through their moist skin o Other groups of vertebrates (mammals, reptiles, birds) have lungs 2. Vertebrates can be grouped into classes according to how they reproduce: o Some vertebrates reprodu ...
... o Amphibians – young amphibians have gills but adult amphibians usually have lungs and can absorb oxygen through their moist skin o Other groups of vertebrates (mammals, reptiles, birds) have lungs 2. Vertebrates can be grouped into classes according to how they reproduce: o Some vertebrates reprodu ...
Topic 1 – Classification, variation and inheritance
... o Amphibians – young amphibians have gills but adult amphibians usually have lungs and can absorb oxygen through their moist skin o Other groups of vertebrates (mammals, reptiles, birds) have lungs 2. Vertebrates can be grouped into classes according to how they reproduce: o Some vertebrates reprodu ...
... o Amphibians – young amphibians have gills but adult amphibians usually have lungs and can absorb oxygen through their moist skin o Other groups of vertebrates (mammals, reptiles, birds) have lungs 2. Vertebrates can be grouped into classes according to how they reproduce: o Some vertebrates reprodu ...
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.