Standard B-5 - Wando High School
... It is essential for students to understand that the DNA, which comprises the organism’s chromosomes, is considered the “code of life” (genetic code) because it contains the code for each protein that the organism needs. The specificity of proteins is determined by the order of the nitrogenous base ...
... It is essential for students to understand that the DNA, which comprises the organism’s chromosomes, is considered the “code of life” (genetic code) because it contains the code for each protein that the organism needs. The specificity of proteins is determined by the order of the nitrogenous base ...
Review Worksheet Exam 3
... 5. From one of the daughter cells, show the production of gametes via meiosis (you do not need to show the steps of meiosis, just the outcome in terms of chromosome 8 in the gametes.) 6. Label all the cells with diploid (2n) or haploid (n) and indicate whether they are somatic cells or gametes. Chec ...
... 5. From one of the daughter cells, show the production of gametes via meiosis (you do not need to show the steps of meiosis, just the outcome in terms of chromosome 8 in the gametes.) 6. Label all the cells with diploid (2n) or haploid (n) and indicate whether they are somatic cells or gametes. Chec ...
UOPX Material
... This is a representation of a cell before it begins meiosis, a process in the nucleus that divides the chromosome number in half. For clarity, the nuclear membrane is not shown. Also, the chromosomes are depicted as condensed, although during interphase of the normal cell cycle, they are actually th ...
... This is a representation of a cell before it begins meiosis, a process in the nucleus that divides the chromosome number in half. For clarity, the nuclear membrane is not shown. Also, the chromosomes are depicted as condensed, although during interphase of the normal cell cycle, they are actually th ...
Caylor 102 Biology Unit 3
... In _______ the chromosomes are split apart. Chromosomes are made up of _____________. In _______________ the nucleolus disappears and the nuclear membrane disintegrates. In _____________ the chromosomes reach the poles and the cell ...
... In _______ the chromosomes are split apart. Chromosomes are made up of _____________. In _______________ the nucleolus disappears and the nuclear membrane disintegrates. In _____________ the chromosomes reach the poles and the cell ...
Sc9 - a 3.1(teacher notes)
... DNA video - http://www.youtube.com/watch?v=8kK2zwjRV0M Characteristics are passed on from one generation to another within a species through the genetic code of the parents. This genetic code is called DNA ...
... DNA video - http://www.youtube.com/watch?v=8kK2zwjRV0M Characteristics are passed on from one generation to another within a species through the genetic code of the parents. This genetic code is called DNA ...
Meiosis - TeacherWeb
... ◦ two separate organisms OR ◦ two sexually different parts of a single organism Produces offspring that are genetically different from either parent ...
... ◦ two separate organisms OR ◦ two sexually different parts of a single organism Produces offspring that are genetically different from either parent ...
Biology Mitosis / Meiosis 2012 – 2013 #3
... A. Deletion = part of the chromosome is broken off and lost B. Duplication = part of the chromosome breaks off and attaches to its homologous chromosome C. Inversion = part of a chromosome breaks off and reattaches backwards D. Translocation = part of a chromosome breaks off and attaches to a Non-ho ...
... A. Deletion = part of the chromosome is broken off and lost B. Duplication = part of the chromosome breaks off and attaches to its homologous chromosome C. Inversion = part of a chromosome breaks off and reattaches backwards D. Translocation = part of a chromosome breaks off and attaches to a Non-ho ...
Crossingover and Gene Mapping
... characteristics, the exact combination of 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, chromosomes become paired. While ...
... characteristics, the exact combination of 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, chromosomes become paired. While ...
Chapter 12 – The Cell Cycle
... 14. What initiates the separation of sister chromatids in anaphase? E – the cessation of delay signals received from unattached kinetochores (pg 224) 15. Cells growing up in cell culture that divide and pile up on top of each other are lacking ...
... 14. What initiates the separation of sister chromatids in anaphase? E – the cessation of delay signals received from unattached kinetochores (pg 224) 15. Cells growing up in cell culture that divide and pile up on top of each other are lacking ...
Genetics Practice MC
... DO NOT write on this sheet. Copy the problems in your notebook and answer them. This will help you study for your test on Wednesday. 1. Hereditary information is contained in the a. cell membrane b. cytoplasm ...
... DO NOT write on this sheet. Copy the problems in your notebook and answer them. This will help you study for your test on Wednesday. 1. Hereditary information is contained in the a. cell membrane b. cytoplasm ...
Chromosomal mutations
... Chromosome Determine Sex of Individual Autosomes – Chromosomes that are the same in male and female (chromosome pairs 1-22) Sex chromosomes – One pair that determines sex (chromosome pair 23- X is longer) XX – Female, XY - Male ...
... Chromosome Determine Sex of Individual Autosomes – Chromosomes that are the same in male and female (chromosome pairs 1-22) Sex chromosomes – One pair that determines sex (chromosome pair 23- X is longer) XX – Female, XY - Male ...
Name Class Date Human Heredity Karyotype Make Up #4 Human
... Human Pedigrees A chart used to analyze the pattern of inheritance that shows the relationships in a family is a pedigree. Pedigrees can be used to determine the nature of genes and alleles associated with inherited human traits. ...
... Human Pedigrees A chart used to analyze the pattern of inheritance that shows the relationships in a family is a pedigree. Pedigrees can be used to determine the nature of genes and alleles associated with inherited human traits. ...
Chapter 5 DNA and Chromosomes
... Chromosomes – in eucaryotic cells, very long double-strand DNA molecules are packaged into structure called chromosomes. ...
... Chromosomes – in eucaryotic cells, very long double-strand DNA molecules are packaged into structure called chromosomes. ...
to print
... • To do this, it randomly sorts chromosomes from both sets in one cell division and then reduces them by half in another. Therefore, each sperm or egg that the body produces is unique and different -- it contains a different mix of the mother's and father's genes. – This is why two brothers in the s ...
... • To do this, it randomly sorts chromosomes from both sets in one cell division and then reduces them by half in another. Therefore, each sperm or egg that the body produces is unique and different -- it contains a different mix of the mother's and father's genes. – This is why two brothers in the s ...
Study Guide Questions Genetics for blog
... 21. homozygous (2 alleles that are the same) heterozygous (two alleles are different) 22. situations in which one allele for a gene is not completely dominant over another allele for that gene ...
... 21. homozygous (2 alleles that are the same) heterozygous (two alleles are different) 22. situations in which one allele for a gene is not completely dominant over another allele for that gene ...
Phases of Mitosis
... 2. During which stage of a cell’s cycle do the replicated chromosomes thicken and become visible? ______________________ 3. In animal cells, which structure is thought to produce the spindle fibers that help separate the sister chromatids during anaphase? ______________________ 4. Is this structure ...
... 2. During which stage of a cell’s cycle do the replicated chromosomes thicken and become visible? ______________________ 3. In animal cells, which structure is thought to produce the spindle fibers that help separate the sister chromatids during anaphase? ______________________ 4. Is this structure ...
Genetics Unit Test
... c. They were both natural, but new plants were added before the second pollination. d. They were both selective breeding, but the second one was not controlled. 20. What letters represent the four bases? a. A, B, C, D c. A, T, G, C b. W, X, Y, Z d. E, Y, A, O 21. Watson and Crick built a DNA model l ...
... c. They were both natural, but new plants were added before the second pollination. d. They were both selective breeding, but the second one was not controlled. 20. What letters represent the four bases? a. A, B, C, D c. A, T, G, C b. W, X, Y, Z d. E, Y, A, O 21. Watson and Crick built a DNA model l ...
Chromosomes - TJ
... DNA is not so neatly organized as you saw in Figure 1. The chromosomes in a cell are not naturally found lined up next to one another. Scientists take a picture of chromosomes and then match them up by size, except the last two. The finished picture is called a karyotype, as you see in Figure 2. Chr ...
... DNA is not so neatly organized as you saw in Figure 1. The chromosomes in a cell are not naturally found lined up next to one another. Scientists take a picture of chromosomes and then match them up by size, except the last two. The finished picture is called a karyotype, as you see in Figure 2. Chr ...
Meiosis and Binary Fission Notes
... Haploid and Diploid Cells • Gamete sex cells with 1/2 number of chromosomes • Haploid cell with n # of chromosomes • Diploid cell with 2n # of chromosomes (n from male, n from female) • Fertilization 1 haploid gamete combines with another haploid gamete to form a diploid ...
... Haploid and Diploid Cells • Gamete sex cells with 1/2 number of chromosomes • Haploid cell with n # of chromosomes • Diploid cell with 2n # of chromosomes (n from male, n from female) • Fertilization 1 haploid gamete combines with another haploid gamete to form a diploid ...
Sexual Preproduction and Meiosis
... • These terms refer to the number of sets of chromosomes an organism has. • Humans are Diploid, we have two sets of chromosomes 46 total or 23 Pairs of “Homologous” chromosomes • Sperm and eggs are haploid they only have 23 chromosomes each. • When sperm and egg join the resulting zygote will have 4 ...
... • These terms refer to the number of sets of chromosomes an organism has. • Humans are Diploid, we have two sets of chromosomes 46 total or 23 Pairs of “Homologous” chromosomes • Sperm and eggs are haploid they only have 23 chromosomes each. • When sperm and egg join the resulting zygote will have 4 ...
DNA info
... Genes are the basic structural and functional unit of heredity. Together they form chromosomes which are made up of DNA, histones, and other support proteins. Therefore genes are found on DNA. All of the hereditary material could be called ‘instructions for making a living thing’! A gene is a specif ...
... Genes are the basic structural and functional unit of heredity. Together they form chromosomes which are made up of DNA, histones, and other support proteins. Therefore genes are found on DNA. All of the hereditary material could be called ‘instructions for making a living thing’! A gene is a specif ...
Questions - DeLuca Biology
... B The gametes produced by meiosis allow for asexual reproduction of a species. C Meiosis provides for chromosomal variation in an organism's gametes. D Equal numbers of eggs and sperm are produced by meiosis. ...
... B The gametes produced by meiosis allow for asexual reproduction of a species. C Meiosis provides for chromosomal variation in an organism's gametes. D Equal numbers of eggs and sperm are produced by meiosis. ...
Chromosome
A chromosome (chromo- + -some) is a packaged and organized structure containing most of the DNA of a living organism. It is not usually found on its own, but rather is complexed with many structural proteins called histones as well as associated transcription (copying of genetic sequences) factors and several other macromolecules. Two ""sister"" chromatids (half a chromosome) join together at a protein junction called a centromere. Chromosomes are normally visible under a light microscope only when the cell is undergoing mitosis. Even then, the full chromosome containing both joined sister chromatids becomes visible only during a sequence of mitosis known as metaphase (when chromosomes align together, attached to the mitotic spindle and prepare to divide). This DNA and its associated proteins and macromolecules is collectively known as chromatin, which is further packaged along with its associated molecules into a discrete structure called a nucleosome. Chromatin is present in most cells, with a few exceptions - erythrocytes for example. Occurring only in the nucleus of eukaryotic cells, chromatin composes the vast majority of all DNA, except for a small amount inherited maternally which is found in mitochondria. In prokaryotic cells, chromatin occurs free-floating in cytoplasm, as these cells lack organelles and a defined nucleus. The main information-carrying macromolecule is a single piece of coiled double-stranded DNA, containing many genes, regulatory elements and other noncoding DNA. The DNA-bound macromolecules are proteins, which serve to package the DNA and control its functions. Chromosomes vary widely between different organisms. Some species such as certain bacteria also contain plasmids or other extrachromosomal DNA. These are circular structures in the cytoplasm which contain cellular DNA and play a role in horizontal gene transfer.Compaction of the duplicated chromosomes during cell division (mitosis or meiosis) results either in a four-arm structure (pictured to the right) if the centromere is located in the middle of the chromosome or a two-arm structure if the centromere is located near one of the ends. Chromosomal recombination during meiosis and subsequent sexual reproduction plays a vital role in genetic diversity. If these structures are manipulated incorrectly, through processes known as chromosomal instability and translocation, the cell may undergo mitotic catastrophe and die, or it may unexpectedly evade apoptosis leading to the progression of cancer.In prokaryotes (see nucleoids) and viruses, the DNA is often densely packed and organized. In the case of archaea by homologs to eukaryotic histones, in the case of bacteria by histone-like proteins. Small circular genomes called plasmids are often found in bacteria and also in mitochondria and chloroplasts, reflecting their bacterial origins.