Biol-1406_Ch12.ppt
... If 2 genes are on the same chromosome, they are usually linked, unless there is a lot of distance between them. If there is enough distance, recombination may occur. Example of genetic linkage – Flower color and pollen shape are on the same chromosome in peas – Gene assignments ...
... If 2 genes are on the same chromosome, they are usually linked, unless there is a lot of distance between them. If there is enough distance, recombination may occur. Example of genetic linkage – Flower color and pollen shape are on the same chromosome in peas – Gene assignments ...
Sex Chromosomes
... If a female is ____________________ for a sex-linked trait, approximately _________ her cells will express one allele and the other half will express the other allele ...
... If a female is ____________________ for a sex-linked trait, approximately _________ her cells will express one allele and the other half will express the other allele ...
Chapter 1: Characteristics of Living Things
... Order values of independent variables (smallest to largest) Record dependent variable’s values, then average the trials Graph Data a. Independent Variables on x-axis, Dependent Variables on y-axis (what happened always goes on vertical axis) b. Bar graphs- discrete data (type, number, trials) where ...
... Order values of independent variables (smallest to largest) Record dependent variable’s values, then average the trials Graph Data a. Independent Variables on x-axis, Dependent Variables on y-axis (what happened always goes on vertical axis) b. Bar graphs- discrete data (type, number, trials) where ...
C17.2 PPT - Destiny High School
... from parents to their children. All the characteristics you have, such as your eye color, the amount of curl in your hair, and your height, are determined by your genetic ...
... from parents to their children. All the characteristics you have, such as your eye color, the amount of curl in your hair, and your height, are determined by your genetic ...
RACC BIO Human Genetics
... If these two genes were on different chromosomes, the alleles from the F1 dihybrid would sort into gametes independently, and we would expect to see equal numbers of the four types of offspring. If these two genes were on the same chromosome, we would expect each allele combination, B+ vg+ and b vg, ...
... If these two genes were on different chromosomes, the alleles from the F1 dihybrid would sort into gametes independently, and we would expect to see equal numbers of the four types of offspring. If these two genes were on the same chromosome, we would expect each allele combination, B+ vg+ and b vg, ...
Honors BIOLOGY
... males get only one X chromosome (always from mom), if that gene is faulty then there is no allele on the Y to override it and the male is affected. Because females get two X’s, they have two chances to be normal. Sex-linked genotypes always use the XX or XY sex genotypes “carrying” the linked trait ...
... males get only one X chromosome (always from mom), if that gene is faulty then there is no allele on the Y to override it and the male is affected. Because females get two X’s, they have two chances to be normal. Sex-linked genotypes always use the XX or XY sex genotypes “carrying” the linked trait ...
Name
... Chromosomes that are homologous are almost always the same size, have their centromeres in the same position and carry the same number and type of genes. (An exception to this rule will be described later in the tutorial.) Homologous chromosomes are not identical because the DNA sequence of a gene a ...
... Chromosomes that are homologous are almost always the same size, have their centromeres in the same position and carry the same number and type of genes. (An exception to this rule will be described later in the tutorial.) Homologous chromosomes are not identical because the DNA sequence of a gene a ...
notes - Humble ISD
... Human somatic cells (_______ cells) are ________________ or ______. Each cell contains ______ chromosomes, or ______ pairs of chromosomes. Of these pairs of chromosomes, _____ pairs are ___________________ pairs, meaning they contain the same genes in the same order. The 44 chromosomes that make up ...
... Human somatic cells (_______ cells) are ________________ or ______. Each cell contains ______ chromosomes, or ______ pairs of chromosomes. Of these pairs of chromosomes, _____ pairs are ___________________ pairs, meaning they contain the same genes in the same order. The 44 chromosomes that make up ...
MER3 is required for normal meiotic crossover formation, but not for
... not all organisms contain both CO classes. In S. pombe, only MUS81-dependent class II COs seem to occur, and these COs decrease significantly in mms4 mus81 double mutants (Osman et al., 2003). By contrast, only class I COs seem to occur in C. elegans where interference is extremely robust. Only one ...
... not all organisms contain both CO classes. In S. pombe, only MUS81-dependent class II COs seem to occur, and these COs decrease significantly in mms4 mus81 double mutants (Osman et al., 2003). By contrast, only class I COs seem to occur in C. elegans where interference is extremely robust. Only one ...
Dragon Genetics1 - Biology Junction
... pieces of DNA. A gene is a segment of the long DNA molecule. Different genes may be different lengths. Each gene is a code for how a certain molecule can be made. The molecules produced by the genes can generally be sorted into two different types: ones that run the chemical reactions in your body, ...
... pieces of DNA. A gene is a segment of the long DNA molecule. Different genes may be different lengths. Each gene is a code for how a certain molecule can be made. The molecules produced by the genes can generally be sorted into two different types: ones that run the chemical reactions in your body, ...
File - Mrs. Badger`s Honors Biology Class
... VARIATION 1. independent assortment of chromosomes during meiosis and random fertilization of gametes 2. new combinations of alleles 3. Unique genetic combinations result in organisms with unique phenotypes, which increases the likelihood that some will survive under changing conditions. 4. duplicat ...
... VARIATION 1. independent assortment of chromosomes during meiosis and random fertilization of gametes 2. new combinations of alleles 3. Unique genetic combinations result in organisms with unique phenotypes, which increases the likelihood that some will survive under changing conditions. 4. duplicat ...
Chapter1109 Test
... 8. A cross of a white hen with a black rooster produces erminette-color offspring. This type of inheritance is known as 9. What did Thomas Hunt Morgan is do? 10. If an organism’s diploid number is 12, its haploid number is 11. What is shown in Figure 11-1? ...
... 8. A cross of a white hen with a black rooster produces erminette-color offspring. This type of inheritance is known as 9. What did Thomas Hunt Morgan is do? 10. If an organism’s diploid number is 12, its haploid number is 11. What is shown in Figure 11-1? ...
File
... production of ......................... for sexual reproduction. In humans the .......................... number is 46, whereas the ............................number is 23. Meiosis promotes ........................... in a species. However, the original differences in the DNA of a species is caused ...
... production of ......................... for sexual reproduction. In humans the .......................... number is 46, whereas the ............................number is 23. Meiosis promotes ........................... in a species. However, the original differences in the DNA of a species is caused ...
Name:______ Period
... How many copies do you have of each gene? __________________________________________ Where do you get your copies from? _________________________________________________ 2. Phenotypes and Genotypes A phenotype is ___________________________________________ Example: A genotype is ____________________ ...
... How many copies do you have of each gene? __________________________________________ Where do you get your copies from? _________________________________________________ 2. Phenotypes and Genotypes A phenotype is ___________________________________________ Example: A genotype is ____________________ ...
Mitosis and cancer - Florida State College at Jacksonville
... Click on “Learn about Cancer” then “Select a cancer type”. Select a type of cancer that you would like to get more information on. Then click on “Go” and to get specific information on this type of cancer. Summarize the information below: 42) What type of cancer did you research? ___________________ ...
... Click on “Learn about Cancer” then “Select a cancer type”. Select a type of cancer that you would like to get more information on. Then click on “Go” and to get specific information on this type of cancer. Summarize the information below: 42) What type of cancer did you research? ___________________ ...
L1 Science (90188) 2007
... A gene is a string of DNA information that carries a trait from an organism to its offspring. A chromosome is a string of DNA containing several genes. ...
... A gene is a string of DNA information that carries a trait from an organism to its offspring. A chromosome is a string of DNA containing several genes. ...
Chapter 11: Complex Inheritance and Human Heredity • Main idea
... – Mitosis- a process in the nucleus of a dividing cell, including prophase, metaphase, anaphase, and telophase • New Vocabulary – Karyotype – Telomere – Nondisjunction Karyotype Studies • Karyotype-micrograph in which the pairs of homologous chromosomes are arranged in decreasing size • Images of ch ...
... – Mitosis- a process in the nucleus of a dividing cell, including prophase, metaphase, anaphase, and telophase • New Vocabulary – Karyotype – Telomere – Nondisjunction Karyotype Studies • Karyotype-micrograph in which the pairs of homologous chromosomes are arranged in decreasing size • Images of ch ...
The Protists
... • Primarily unicellular (some colonial and multicellular exist) • Metabolically diverse • Structurally complex • Asexual reproduction usual; sexual reproduction diverse • Basically, catch-all kingdom!! • Only real characteristics in common are: – Eukaryotes – Prefer watery environments ...
... • Primarily unicellular (some colonial and multicellular exist) • Metabolically diverse • Structurally complex • Asexual reproduction usual; sexual reproduction diverse • Basically, catch-all kingdom!! • Only real characteristics in common are: – Eukaryotes – Prefer watery environments ...
7.06 Cell Biology QUIZ #2
... Separase alone or Securin and Separase in vitro then ran a gel, prepared a western blot and probed it with an antibody against the Scc1 subunit. In a separate in vitro experiment you incubated CyclinB protein with Cdh1/APC with or without the 26S proteosome, ran a gel, made a western blot and probed ...
... Separase alone or Securin and Separase in vitro then ran a gel, prepared a western blot and probed it with an antibody against the Scc1 subunit. In a separate in vitro experiment you incubated CyclinB protein with Cdh1/APC with or without the 26S proteosome, ran a gel, made a western blot and probed ...
Cell Reproduction___notes outline cell cycle mitosis
... ?What type of cell (diploid/haploid) does the cell cycle with mitosis happen to? ?What type of cells (diploid/haploid) does the cell cycle with mitosis end with? draw a diagram of the cell cycle w/ mitosis that indicates for each stage, how many cells are present and the chromosome number (n, 2n ...
... ?What type of cell (diploid/haploid) does the cell cycle with mitosis happen to? ?What type of cells (diploid/haploid) does the cell cycle with mitosis end with? draw a diagram of the cell cycle w/ mitosis that indicates for each stage, how many cells are present and the chromosome number (n, 2n ...
Chapter 9 Study Guide
... 29. If an organisms alleles look like Nn the ____________________ trait would show. If the alleles are nn it would show the __________________ trait. If the alleles are NN it would show the ______________________ trait. 30. Describe a multiple allele trait – Blood Type ...
... 29. If an organisms alleles look like Nn the ____________________ trait would show. If the alleles are nn it would show the __________________ trait. If the alleles are NN it would show the ______________________ trait. 30. Describe a multiple allele trait – Blood Type ...
Meiosis
Meiosis /maɪˈoʊsɨs/ is a specialized type of cell division which reduces the chromosome number by half. This process occurs in all sexually reproducing single-celled and multi-celled eukaryotes, including animals, plants, and fungi. Errors in meiosis resulting in aneuploidy are the leading known cause of miscarriage and the most frequent genetic cause of developmental disabilities. In meiosis, DNA replication is followed by two rounds of cell division to produce four daughter cells each with half the number of chromosomes as the original parent cell. The two meiotic divisions are known as meiosis I and meiosis II. Before meiosis begins, during S phase of the cell cycle, the DNA of each chromosome is replicated so that it consists of two identical sister chromatids. In meiosis I, homologous chromosomes pair with each other and can exchange genetic material in a process called chromosomal crossover. The homologous chromosomes are then segregated into two new daughter cells, each containing half the number of chromosomes as the parent cell. At the end of meiosis I, sister chromatids remain attached and may differ from one another if crossing-over occurred. In meiosis II, the two cells produced during meiosis I divide again. Sister chromatids segregate from one another to produce four total daughter cells. These cells can mature into various types of gametes such as ova, sperm, spores, or pollen.Because the number of chromosomes is halved during meiosis, gametes can fuse (i.e. fertilization) to form a zygote with a complete chromosome count containing a combination of paternal and maternal chromosomes. Thus, meiosis and fertilization facilitate sexual reproduction with successive generations maintaining the same number of chromosomes. For example, a typical diploid human cell contains 23 pairs of chromosomes (46 total, half of maternal origin and half of paternal origin). Meiosis produces haploid gametes with one set of 23 chromosomes. When two gametes (an egg and a sperm) fuse, the resulting zygote is once again diploid, with the mother and father each contributing 23 chromosomes. This same pattern, but not the same number of chromosomes, occurs in all organisms that utilize meiosis. Thus, if a species has 30 chromosomes in its somatic cells, it will produce gametes with 15 chromosomes.