GENETICS & HEREDITY
... original cells. This results in cells with half the number of chromosomes present in the parent cell. A diploid cell duplicates itself, then undergoes two divisions (tetraploid to diploid to haploid), in the process forming four haploid cells. This process occurs in two phases, meiosis I and meiosis ...
... original cells. This results in cells with half the number of chromosomes present in the parent cell. A diploid cell duplicates itself, then undergoes two divisions (tetraploid to diploid to haploid), in the process forming four haploid cells. This process occurs in two phases, meiosis I and meiosis ...
DNA Test Study Guide
... Human cells have ________chromosomes, or two sets of _________. One set came from the ___________ and one from the ___________. Body cells we also call ________________Because our body cells’ chromosomes are found in pairs, we call them ___________. When arranged on a karyotype, you can see that the ...
... Human cells have ________chromosomes, or two sets of _________. One set came from the ___________ and one from the ___________. Body cells we also call ________________Because our body cells’ chromosomes are found in pairs, we call them ___________. When arranged on a karyotype, you can see that the ...
aneuploidy
... Chromosome Mutation Mutations are permanent gene or chromosome changes that will be passed on to offspring if they occur in a gamete Two categories of chromosome mutation-Those that affect the # of chromosomes and those that affect the structure of the chromosome ...
... Chromosome Mutation Mutations are permanent gene or chromosome changes that will be passed on to offspring if they occur in a gamete Two categories of chromosome mutation-Those that affect the # of chromosomes and those that affect the structure of the chromosome ...
Unit 4 Genetics
... The Human Genome Project Genome- the entire genetic makeup of an organism The Human Genome Project is an ongoing effort to analyze the human DNA sequence Biotechnology companies are rushing to find genetic info. that may be used in developing new drugs & treatments for diseases ...
... The Human Genome Project Genome- the entire genetic makeup of an organism The Human Genome Project is an ongoing effort to analyze the human DNA sequence Biotechnology companies are rushing to find genetic info. that may be used in developing new drugs & treatments for diseases ...
meiosis - Citrus College
... Meiosis • Sex cells divide to produce gametes (sperm or egg). egg) • Gametes have half the # of chromosomes. chromosomes • Occurs only in gonads (testes or ovaries). Male: spermatogenesis Female: oogenesis ...
... Meiosis • Sex cells divide to produce gametes (sperm or egg). egg) • Gametes have half the # of chromosomes. chromosomes • Occurs only in gonads (testes or ovaries). Male: spermatogenesis Female: oogenesis ...
Sexual Reproduction Homologous Chromosomes have different
... during metaphase I they do so randomly So genes from mom and dad can go to either pole leading to a blend of genes from mom and dad in gamete ...
... during metaphase I they do so randomly So genes from mom and dad can go to either pole leading to a blend of genes from mom and dad in gamete ...
Ch.14 - Jamestown School District
... The Human Genome Project The Human Genome Project is an ongoing effort to analyze the human DNA sequence Biotechnology companies are rushing to find genetic info. that may be used in developing new drugs & treatments for diseases ...
... The Human Genome Project The Human Genome Project is an ongoing effort to analyze the human DNA sequence Biotechnology companies are rushing to find genetic info. that may be used in developing new drugs & treatments for diseases ...
genes - Brookwood High School
... 3. Worked with pea plants a. self-pollinators meaning inherit all characteristics from the original plant or identical: true-breeding. ...
... 3. Worked with pea plants a. self-pollinators meaning inherit all characteristics from the original plant or identical: true-breeding. ...
5-Sex linked - Science-with
... studied the principles of inheritance using Drosophila melanogaster, fruit flies fruit flies a great animals to study because: • they reproduce rapidly (in 10 to 15 days) • offspring can mate shortly after leaving the egg • females produce over 100 eggs • they are small and easy to take care of. • m ...
... studied the principles of inheritance using Drosophila melanogaster, fruit flies fruit flies a great animals to study because: • they reproduce rapidly (in 10 to 15 days) • offspring can mate shortly after leaving the egg • females produce over 100 eggs • they are small and easy to take care of. • m ...
Biotechnology Content Review
... 11. Explain how amniocentesis can be used to screen for genetic disorders. A small amount of amniotic fluid, which contains fetal tissues, is extracted and the fetal DNA is examined 12. How can gel electrophoresis be useful: Law enforcement: Matching DNA samples from crime scenes; fingerprintin ...
... 11. Explain how amniocentesis can be used to screen for genetic disorders. A small amount of amniotic fluid, which contains fetal tissues, is extracted and the fetal DNA is examined 12. How can gel electrophoresis be useful: Law enforcement: Matching DNA samples from crime scenes; fingerprintin ...
EXAM 3.doc
... a kind of chain reaction of effects. This situation is known as a. complete dominance d. pleiotropy b. incomplete dominance e. continuous variation c. polygenic inheritance ___15. The common garden pea was an excellent choice for Mendel to select for his inheritance experiments because: a. there wer ...
... a kind of chain reaction of effects. This situation is known as a. complete dominance d. pleiotropy b. incomplete dominance e. continuous variation c. polygenic inheritance ___15. The common garden pea was an excellent choice for Mendel to select for his inheritance experiments because: a. there wer ...
Principals of General Zoology (Zoo-103)
... Most cells of eukaryotic organisms are diploid; that contain two sets of chromosomes. In the diploid state, members of the same chromosome pair are referred to as homologous chromosome, or homologs. One member of each pair comes from each parent. Humans have 23 homologous chromosome pairs, which ...
... Most cells of eukaryotic organisms are diploid; that contain two sets of chromosomes. In the diploid state, members of the same chromosome pair are referred to as homologous chromosome, or homologs. One member of each pair comes from each parent. Humans have 23 homologous chromosome pairs, which ...
Daughter cells are
... Which of the following would NOT result in an abnormality in offspring? – Extra chromosomes in a gamete; failure of chromatids to separate; formation of a polar body during gamete production; genetic mutation ...
... Which of the following would NOT result in an abnormality in offspring? – Extra chromosomes in a gamete; failure of chromatids to separate; formation of a polar body during gamete production; genetic mutation ...
Practice Exam 4 Below are sample questions from your book (of
... Understand how meiosis introduces genetic variation Compare and contrast mitosis and meiosis Describe the mendelian evidence for the Chromosomal Inheritance Theory Understand sex-linked traits o Be able to work examples as Punnett squares Describe examples of non-Mendelian inheritance ...
... Understand how meiosis introduces genetic variation Compare and contrast mitosis and meiosis Describe the mendelian evidence for the Chromosomal Inheritance Theory Understand sex-linked traits o Be able to work examples as Punnett squares Describe examples of non-Mendelian inheritance ...
Key for Exam 2 Part 1 - Evolutionary Biology
... (B) occurs when two populations interbreed (C) is adaptation to a habitat (D) occurs when it is needed (E) is the change of a population’s genetic make-up through chance alone. 40. What is a polyploid number for a plant that has a diploid number of 12? (A) six (B) ten (C) nineteen (D) twenty-four (E ...
... (B) occurs when two populations interbreed (C) is adaptation to a habitat (D) occurs when it is needed (E) is the change of a population’s genetic make-up through chance alone. 40. What is a polyploid number for a plant that has a diploid number of 12? (A) six (B) ten (C) nineteen (D) twenty-four (E ...
Human Genome PPT 2013
... Autosomes – chromosomes paired together by size, shape, content (22 pairs) Sex Chromosomes – one pair of chromosomes that determine gender (one pair) ...
... Autosomes – chromosomes paired together by size, shape, content (22 pairs) Sex Chromosomes – one pair of chromosomes that determine gender (one pair) ...
Genetics – word list
... Each cell has divided again. The result is the production of four haploid gametes. Each of these cells are genetically different to each other. ...
... Each cell has divided again. The result is the production of four haploid gametes. Each of these cells are genetically different to each other. ...
meiosis generates new combinations of alleles
... • Spermatogenesis is the process of sperm formation • Both go through several stages, with (in mammals) different timing in males than females • Sperms go through more cell divisions than eggs do - more chance of mutation ...
... • Spermatogenesis is the process of sperm formation • Both go through several stages, with (in mammals) different timing in males than females • Sperms go through more cell divisions than eggs do - more chance of mutation ...
Sex-determining Region of the Y chromosome
... results from a specific deletion in chromosome 5. -- Is a rare genetic disorder due to a missing part of chromosome 5 – These individuals are mentally retarded, have a small head with unusual facial features, and a cry like the mewing of a distressed cat. – This syndrome is fatal in infancy الطفوي ...
... results from a specific deletion in chromosome 5. -- Is a rare genetic disorder due to a missing part of chromosome 5 – These individuals are mentally retarded, have a small head with unusual facial features, and a cry like the mewing of a distressed cat. – This syndrome is fatal in infancy الطفوي ...
Unit III
... Prophase I: The nucleolus disappears, chromatin condenses into chromosomes, the nuclear envelope breaks down, and the spindle apparatus develops. Metaphase I: homologous pairs of chromosomes are spread across the metaphase plate. Anaphase I: begins when homologues within tetrads uncouple as they are ...
... Prophase I: The nucleolus disappears, chromatin condenses into chromosomes, the nuclear envelope breaks down, and the spindle apparatus develops. Metaphase I: homologous pairs of chromosomes are spread across the metaphase plate. Anaphase I: begins when homologues within tetrads uncouple as they are ...
Chapter 15 - Advances in Molecular Genetics
... 6. In the classroom is a poster depicting the diseases associated with a specific chromosome out of the 24 different chromosomes (1-22 autosomes and an X and Y chromosome). Which chromosome has the most diseases associated with it? 7. What is the srY gene? What is its function in the human body? In ...
... 6. In the classroom is a poster depicting the diseases associated with a specific chromosome out of the 24 different chromosomes (1-22 autosomes and an X and Y chromosome). Which chromosome has the most diseases associated with it? 7. What is the srY gene? What is its function in the human body? In ...
Ch 14- Human Genome
... • If nondisjunction occurs, abnormal numbers of chromosomes may find their way into gametes, and a disorder of chromosome numbers may result • Trisomy- when two copies of autosomal chromosomes fail to separate during meiosis, individual is born with three copies of chromosomes • Down snydrome- most ...
... • If nondisjunction occurs, abnormal numbers of chromosomes may find their way into gametes, and a disorder of chromosome numbers may result • Trisomy- when two copies of autosomal chromosomes fail to separate during meiosis, individual is born with three copies of chromosomes • Down snydrome- most ...
SexDetermination
... Some fish change sex as they get older or larger. In clown fish, largest group member is female, second largest is male, and all others are nonbreeding. Sometimes the largest fish in the group will become male, all others will be female (wrasses). ...
... Some fish change sex as they get older or larger. In clown fish, largest group member is female, second largest is male, and all others are nonbreeding. Sometimes the largest fish in the group will become male, all others will be female (wrasses). ...
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.