What is a TRAIT?
... What is a TRAIT? A specific characteristic that can be passed from parent to offspring. What is HEREDITY (inheritance)? Passing of traits from parent to offspring or from one generation to the next. Genes are the coded instructions that define our traits ...
... What is a TRAIT? A specific characteristic that can be passed from parent to offspring. What is HEREDITY (inheritance)? Passing of traits from parent to offspring or from one generation to the next. Genes are the coded instructions that define our traits ...
AP Lab 7 Report2013
... Part 1: Simulating Mitosis Think about these questions as you review the cell cycle and mitosis. ...
... Part 1: Simulating Mitosis Think about these questions as you review the cell cycle and mitosis. ...
Mitosis Musical Chair Questions
... 20. Phase of the cell cycle in which cells stop dividing. 21. Phase of the cell cycle that follows G1 22. Phase in which the nuclear membrane and nucleolus disappear and spindle fibers and centrioles appear. ...
... 20. Phase of the cell cycle in which cells stop dividing. 21. Phase of the cell cycle that follows G1 22. Phase in which the nuclear membrane and nucleolus disappear and spindle fibers and centrioles appear. ...
Topic 5: Reproduction and Development Page 1
... 12. The spotted touch-me-not, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. Such an adaptation is favorable because it (1) aids in the dispersal of the species (2) attracts insects that aid in pollination (3) prevents germination within the seed pod ...
... 12. The spotted touch-me-not, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. Such an adaptation is favorable because it (1) aids in the dispersal of the species (2) attracts insects that aid in pollination (3) prevents germination within the seed pod ...
Chapter 1 Biology Exam Study Guide
... regulatory information. A chromatin is the loose combination of DNA and proteins. ...
... regulatory information. A chromatin is the loose combination of DNA and proteins. ...
Chapter 1 Biology Exam Study Guide
... the level of chemicals in cells. Different types of cells have different functions that depend on their specialized structures (i.e. brain cells have branches that receive info from other cells). Structure and function are also related on the level of the organism (i.e. ducks have webbed feet to swi ...
... the level of chemicals in cells. Different types of cells have different functions that depend on their specialized structures (i.e. brain cells have branches that receive info from other cells). Structure and function are also related on the level of the organism (i.e. ducks have webbed feet to swi ...
Biology 212 General Genetics
... Parental types = 497 + 472 = 969/1000 = 96.9% non-recombinant Recombinant types = 19 + 12 = 31/1000 = 3.1% recombinant types Construct a linkage map of the two genes ...
... Parental types = 497 + 472 = 969/1000 = 96.9% non-recombinant Recombinant types = 19 + 12 = 31/1000 = 3.1% recombinant types Construct a linkage map of the two genes ...
REPRODUCTION
... together) of two gametes (sex cells) is called asexual reproduction. In Prokaryotes: • binary fission (fission= ‘splitting’; binary= ‘two’) - replication of the circular molecule of DNA of the bacterial cell. - attachment of the two DNA molecules to the plasma membrane - lengthening of the cell - ph ...
... together) of two gametes (sex cells) is called asexual reproduction. In Prokaryotes: • binary fission (fission= ‘splitting’; binary= ‘two’) - replication of the circular molecule of DNA of the bacterial cell. - attachment of the two DNA molecules to the plasma membrane - lengthening of the cell - ph ...
File - wedgwood science
... The prokaryotic cell cycle is a regular pattern of growth, DNA replication, and cell division. Most prokaryotic cells begin to replicate, or copy, their DNA once they have grown to a certain size. ...
... The prokaryotic cell cycle is a regular pattern of growth, DNA replication, and cell division. Most prokaryotic cells begin to replicate, or copy, their DNA once they have grown to a certain size. ...
Genetics, Exam 2, Sample A Name ___________________________
... recessive male. What proportion (%) of her progeny would express each of the following phenotypes? Notched tail, white markings on dorsal fin _____________ Notched tail, no white markings on dorsal fin _____________ Smooth tail, white markings on dorsal fin _____________ Smooth tail, no white markin ...
... recessive male. What proportion (%) of her progeny would express each of the following phenotypes? Notched tail, white markings on dorsal fin _____________ Notched tail, no white markings on dorsal fin _____________ Smooth tail, white markings on dorsal fin _____________ Smooth tail, no white markin ...
Review of genetics - Montreal Spring School
... 1. The chromosomes in the nuclei divided in a longitudinal way during cell division. 2. The divided chromosomes are distributed equally between the daughter cells. 3. The total number of chromosomes does not change in all the organism’s cells (mitosis), except during the formation of gametes (second ...
... 1. The chromosomes in the nuclei divided in a longitudinal way during cell division. 2. The divided chromosomes are distributed equally between the daughter cells. 3. The total number of chromosomes does not change in all the organism’s cells (mitosis), except during the formation of gametes (second ...
Chapter 12: Patterns of Heredity and Human Genetics
... o Males only need one “bad” gene on the X chromosome o But females need two “bad” genes on both X chromosomes ...
... o Males only need one “bad” gene on the X chromosome o But females need two “bad” genes on both X chromosomes ...
Chromosome - Didattica Orizzonte Scuola
... OCCURRING IN SEXUAL REPRODUCTION Sexual reproduction is a way of producing offspring that also generates genetic diversity in a species. In eukaryotic organisms, it involves the process of fertilization. In the process of fertilization, male gamete (sperm cell) penetrates the female gamete (egg cell ...
... OCCURRING IN SEXUAL REPRODUCTION Sexual reproduction is a way of producing offspring that also generates genetic diversity in a species. In eukaryotic organisms, it involves the process of fertilization. In the process of fertilization, male gamete (sperm cell) penetrates the female gamete (egg cell ...
chromosomes
... – A set of molecules, including growth factors, that triggers and coordinates events of the cell cycle ...
... – A set of molecules, including growth factors, that triggers and coordinates events of the cell cycle ...
Introduction Chapter 12 Week 10 Chromosomes and Human Genetics
... a. gametes or cells of an affected individual end up with one extra or one less chromosome than is normal 2. Polyploidy a. Three or more of each type of chromosomes in gametes or cells 1) Common in plants but fatal in humans B. Mechanisms of Change 1. Chromosome number can change during mitotic or m ...
... a. gametes or cells of an affected individual end up with one extra or one less chromosome than is normal 2. Polyploidy a. Three or more of each type of chromosomes in gametes or cells 1) Common in plants but fatal in humans B. Mechanisms of Change 1. Chromosome number can change during mitotic or m ...
Biol-1406_Ch11Notes.ppt
... Chromosomes line up along the equator, with sister chromatids of each chromosome attached to spindle microtubules that lead to opposite poles. ...
... Chromosomes line up along the equator, with sister chromatids of each chromosome attached to spindle microtubules that lead to opposite poles. ...
mitosis. - Cloudfront.net
... All cells are derived from pre-existing cells New cells are produced for growth and to replace damaged or old cells Differs in prokaryotes (bacteria) and eukaryotes (protists, fungi, plants, & animals) ...
... All cells are derived from pre-existing cells New cells are produced for growth and to replace damaged or old cells Differs in prokaryotes (bacteria) and eukaryotes (protists, fungi, plants, & animals) ...
(DOCX, Unknown)
... D) metaphase E) interphase 17) Which of the following is true for all exergonic reactions? A) The products have more total energy than the reactants. B) The reaction proceeds with a net release of free energy. C) The reaction goes only in a forward direction: all reactants will be converted to produ ...
... D) metaphase E) interphase 17) Which of the following is true for all exergonic reactions? A) The products have more total energy than the reactants. B) The reaction proceeds with a net release of free energy. C) The reaction goes only in a forward direction: all reactants will be converted to produ ...
The Cell Cycle
... bunch of thin spaghetti noodles. Each chromosome is so thin that it cannnot be observed with a light microscope. The three phases1 of interphase are G1, S and G2. During G1 phase1, a cell grows and carries out its usual cellular functions. For example muscle cells are using oxygen and glucose to pro ...
... bunch of thin spaghetti noodles. Each chromosome is so thin that it cannnot be observed with a light microscope. The three phases1 of interphase are G1, S and G2. During G1 phase1, a cell grows and carries out its usual cellular functions. For example muscle cells are using oxygen and glucose to pro ...
Mendelian Inheritance Part 2 - Oklahoma City Community College
... • Skin blisters from sun exposure • Develop skin cancer as children • Recessive gene does not produce DNA repair enzyme ...
... • Skin blisters from sun exposure • Develop skin cancer as children • Recessive gene does not produce DNA repair enzyme ...
Gene Cloning and Karyotyping
... • One goal may be to produce a protein product for use. • A second goal may be to prepare many copies of the gene itself. – This may enable scientists to determine the gene’s nucleotide sequence or provide an organism with a new metabolic capability by transferring a gene from another organism. ...
... • One goal may be to produce a protein product for use. • A second goal may be to prepare many copies of the gene itself. – This may enable scientists to determine the gene’s nucleotide sequence or provide an organism with a new metabolic capability by transferring a gene from another organism. ...
Problem Set 2B
... Draw three base pairs of a DNA molecule that has the sequence 5’-GCA-3.’ Draw one strand down the page on the left, and the other strand base-paired with it just to the right. Use the same amount of detail as we used in class. Show the negative charge on each phosphate group, label the 5’ and 3’ car ...
... Draw three base pairs of a DNA molecule that has the sequence 5’-GCA-3.’ Draw one strand down the page on the left, and the other strand base-paired with it just to the right. Use the same amount of detail as we used in class. Show the negative charge on each phosphate group, label the 5’ and 3’ car ...
Glenbard District 87 - Glenbard High School District 87
... 12: Understand the fundamental concepts, principles and interconnection of the life, physical and earth/space sciences. 12.11.12: Understand Mendel’s Law of Segregation and also that genes do not always separate ...
... 12: Understand the fundamental concepts, principles and interconnection of the life, physical and earth/space sciences. 12.11.12: Understand Mendel’s Law of Segregation and also that genes do not always separate ...
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.