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Molecular genetics

Campbell Biology Chapter 13 Summary

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Chapter 13 Meiosis and Sexual Life Cycles Lecture Outline Overview: Hereditary Similarity and Variation Living organisms are distinguished by their ability to reproduce their own kind. heredity or inheritance. The transmission of traits from one generation to the next is called offspring differ somewhat from parents and siblings, demonstrating variation. Farmers have bred plants and animals for desired traits for thousands of years, but the mechanisms of heredity and variation eluded biologists until the development of genetics in the 20th century. Genetics the scientific study of heredity and variation. Concept 13.1 Offspring acquire genes from parents by inheriting chromosomes Genes are segments of DNA.

Translation Lab

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Zoe Collins Zoe Collins Assignment 1 Would two nucleotides at a time be sufficient to provide enough codons to code for all 20 amino acids? Why or why not? How many amino acids could be coded for by codons containing only two nucleotides? Will three nucleotides per codon work? Why or why not?Explain your answers.

Chapter 13 Meiosis Powerpoint

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Chapter 13 Meiosis One of the characteristics of life is that organisms reproduce their own kind Exceptions to this rule only show up as tabloid rumors Offspring generally resemble their parents in some form Heredity-transfer of traits from parent to offspring But there is variation We will look at how chromosomes pass from parent to offspring Parents give offspring coded information in units called genes It is our link to our parents The genetic program is written in the language of DNA-4 bases It is symbolic DNA programs the cell to translate the information Ex: when we read the word apple, we see the fruit Cells do the same thing except in the form of a code that might mean freckles, blue eyes, brown hair

AP Bio Reading Guide Answers CH 15

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Copyright ? 2011 Pearson Education, Inc. -1- Name_______________________ Period___________ Chapter 15: The Chromosomal Basis of Inheritance Concept 15.1 Mendelian inheritance has its physical basis in the behavior of chromosomes 1. What is the chromosome theory of inheritance? The chromosome theory of inheritance is a basic principle in biology stating that genes are located at specific positions (loci) on chromosomes and that the behavior of chromosomes during meiosis accounts for inheritance patterns. 2. Explain the law of segregation. Use two different colored pencils to illustrate the segregation of alleles. You may want to consult Figure 15.2 in your text, and model your sketches on this.

AP Bio Reading Guide Answers CH 13

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Copyright ? 2011 Pearson Education, Inc. -1- Name__________________________Period___________ Chapter 13: Meiosis and Sexual Life Cycles Concept 13.1 Offspring acquire genes from parents by inheriting chromosomes 1. Let?s begin with a review of several terms that you may already know. Define: gene: A discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA (or RNA, in some viruses) locus: A specific place along the length of a chromosome where a given gene is located gamete: A haploid reproductive cell, such as an egg or sperm. Gametes unite during sexual reproduction to produce a diploid zygote. male gamete: Sperm female gamete: Eggs

Protein Synthesis

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Protein Synthesis What are proteins? An organic molecule Building block is amino acids Examples: Enzymes Antibodies Hemoglobin Part of Cell Membrane Structural (Collagen) How Are Proteins Made? The instructions for building a protein are found on a gene (DNA). RNA copies the DNA code to make a protein. Step 1 of Protein Synthesis The 1st step is called TRANSCRIPTION Transcription (Transcribe) how would we define? Transcription The information in DNA must be written into mRNA code DNA strand mRNA Who is involved in Transcription? DNA and mRNA mRNA goes to the nucleus to copy DNA and takes the codons to the ribosome Step 2 of Protein Synthesis The 2nd step is called TRANSLATION Translation (Translate) how would we define? Translation

AP Biology Test Bank Chapter 13

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Campbell's Biology, 9e (Reece et al.) Chapter 13 Meiosis and Sexual Life Cycles New questions are mostly at higher skill levels in this chapter. The new questions represent newer material both in the chapter and in the area of biological research. All questions with accompanying art work or questions grouped together as sets have been organized at the end of the chapter. Multiple-Choice Questions 1) If a horticulturist breeding gardenias succeeds in having a single plant with a particularly desirable set of traits, which of the following would be her most probable and efficient route to establishing a line of such plants? A) Backtrack through her previous experiments to obtain another plant with the same traits.

Biology

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Meiosis
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03.01 Mitosis Binary Fission Mutation Transduction Conjugation Transformation 03.02 Asexual and Sexual Reproduction Diploid and Haploid Cells Sex Chromosomes Meiosis Ova and Sperm Mitosis vs. Meiosis 03.03 Mendel Mendel?s Experiment Hybridization Mendel?s Conclusions Patterns of Inheritance Inheritence Self-Check 03.04 Probability Genetic Vocabulary homozygous heterozygous phenotype genotype. Punnett Squares Test Crosses Independent Assortment dihybrid Extended Genetics Multiple Alleles Codominance Sex Linked Traits Pedigree 03.05 Structure of DNA DNA Replication RNA and DNA Flow of Genetic Information Transcription-Translation The Genetic Code 03.06 Mutations Gene Mutations Genetic Variation Gene Expression Helpful and Harmful Mutations Examples of Mutations Cancer 03.07

Freshman Biology

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THE BIG PICTURE DNA RNA PROTEIN Replication Transcription Translation Nucleotide Structure SUGAR Ribose in RNA Deoxyribose in DNA PHOSPHATE BASE Function of DNA Replication Produce 2 DNA molecules identical to the parent molecule Each will be distributed to 2 new cells during mitosis & 4 gametes during meiosis Two things can happen to DNA: Replication - so that the cell can divide Transcription ? so that the code for making a protein can be sent into the cell TRANSCRIPTION Function Produce a temporary RNA copy complimentary to part of 1 DNA strand mRNA will be used to take DNA code to ribosome & make protein Transcription animation http://www.stolaf.edu/people/giannini/flashanimat/molgenetics/transcription.swf Steps (in Nucleus)

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