An ear of corn is actually a collection of over a hundred offspring, neatly packaged onto a cob, able to be stored long term, perfect for studying genetics. Beginning students of biology always learn about mendelian genetics. Corn a diploid organism has been widely used to study and illustrate mendelian traits. Feb 25, 2015 corn genetics chi square analysis objective. The the second part of the lab corn is a dihybrid cross of two monohybrids. Visit ap central at for details about the ap course audit, coursespecific curricular requirements, and how to submit your syllabus for ap course audit authorization. We have kits for new and traditional ap biology labs. Ultimately, our hypothesis was supported as seen through our group ratio of 7. From the carolina drosophila manual, carolina biological.
With knowledge of inheritance, plants and animals have been developed that are more productive and, in some cases, have more nutrients. Identify and explain the concepts, terminology and theories in the biology curriculum. Corn genetics and chi square statistical analysis, using preserved corn and counting kernels corn genetics grow corn, 3. In this lab, we had the opportunity to witness mendelian genetics firsthand and observe the truth behind the apparent complexity of inheritance and alleles. These do not replace reading the textbook, so dont become overly dependent on them. S smooth texture, s shrunken texture the purpose of our lab was to examine the traits exhibited on the kernels of corn found on five different rows and discern the genotypes of the parents of the ear of corn. This practice exam is provided by the college board for ap exam preparation. In corn zea mays, purple kernels r are dominant to yellow kernels r. Each corn kernel seed has a dormant embryo and an enhanced nutritive layer known as the endosperm, which will support the growing embryo until it germinates and can begin providing for.
Mendelianbeyond mendelian genetics learning package for ap. If you are using this kit with less experienced biology students, you may need to make some modifications. This lab uses preserved corn where students count the number of starch, sweet, yellow and purple kernels. Also in corn, the dominant gene su produces the endosperm phenotype smooth. Also, production of malvidin can be suppressed if there is a dominant allele at gene d. There are four grain phenotypes in the above ear of genetic corn. S smooth texture, s shrunken texture the purpose of our lab was to examine the traits exhibited on the kernels of corn found on five different rows and discern the genotypes of the. Mcgrawhill virtual labs the mcgraw hill virtual lab is great just print off the post lab questions and tables and have students complete the lab. Cobs from the offspring of a cross between a purple plant and yellow plant were used in a lab. Genetic corn ears provide a reliable source of easily distinguishable characteristics from which a mathematical ratio can be made. Download spreadsheet online spreadsheet chi square test photos of corn. By counting the number of corn kernels by color and texture, we were able to make inferences about the hereditary information alleles which were passed down from the parents. Ap biology lab manual meiosis lab required course content ist1. The study of inheritanceat the molecuiar, organismal, and evolutionary levelscomprises the field of.
As the advanced placement program continues to experience tremendous growth in the twentyfirst. Genetic crosses objective in this exercise you will study monohybrid and dihybrid inheritance by analyzing phenotypes of an f 2generation of corn grains. Browse the latest lab supplies and equipment for all your science lab essentials. Freeresponse questions from the 2016 ap biology exam keywords. The gmo investigator kit can identify both of these genetic modifications in grocery store food produc ts.
The new ap biology labs can be found online by clicking the link below. This kit has been designed for use as an introductory collegelevel genetics lab or, alternatively, as a high school honors, college preparatory, or ap biology. Rather, you are a product of the genetic code you inherited from your parents, and its interactions with the environment. Monohybrid genetics with corn kit overview storing your kit objectives expectations required knowledge this kit is written primarily as a genetics lab for an introductory high school or middle school biology course. Mendelian genetics 1 laboratory 5 mendelian genetics despite what you may have heard, youre not what you eat. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Mendelianbeyond mendelian genetics learning package for. The following is a brief ap biology course overview. Apr 20, 2017 ap biology weblabs this site has a virtual lab on each of the dirty dozen ap biology labs. G describe similarities and or differences between the phases and outcomes of mitosis and meiosis. Corn genetics and chi square analysis the biology corner. You will evaluate each ear or cob of corn and determine the phenotypic ratio, the genotypes present, and the probable genotypes of the parents. Sweet corn grains wrinkle upon drying while starchy grains remain. The large number of kernels on each ear of corn gives a close.
To follow the stages of mitosis and meiosis and calculate the mitotic index in onion root tip sections to simulate mitosis and meiosis using pipe cleaners to understand the differences and similarities between mitosis and meiosis. Ap biology lab 7 genetics of organisms using corn filename. Ap biology genetics lab california state university. Overview this kit has been designed for use as an introductory collegelevel genetics lab or, alternatively, as a high school honors, college preparatory, or ap biology lab. The purple color is produced by a pigmented layer within the grains. Genetics of organisms ap biology explained free pdf file. Genetics and information transfer 3 investigation 8. Prepare your students for medical and lab tech careers with carolina s wide range of equipment, kits and models. Prepare your students for medical and lab tech careers with carolina s wide range of.
Chisquare analysis, with corn genetics in this investigation, you will analyze the physical traits, or phenotypes, of f 2 generation ears of corn produced from monohybrid and dihybrid crosses. To use genetic hybrid corn ears to study mendelian inheritance. Mitosis is the mechanism by which the chromosomes of. To build comprehension of mendelian genetics by analyzing test crosses in corn. Biology practice exam from the 20 administration this is a modified version of the 20 ap biology exam. Mendelian inheritance in corn the study of genetics and inheritance is concerned with understanding the biological properties that are transmitted from parent to offspring. Genetic corn ears provide a reliable source of easily distinguishable characteristics from which a mathematical ratio can be made to confirm typical mendelian genetics ratios. They are in a condensed format which has six slides to a page. Mitosis, meiosis, and mendelian genetics learning goals. In fact, mendelian inheritance patterns are exceedingly rare, especially in humans. Ap biology 2016 freeresponse questions college board. S smooth texture, s shrunken texture the purpose of our lab was to examine the traits exhibited on the kernels of corn found on five different rows and discern.
Mcgrawhill virtual labs the mcgraw hill virtual lab is great just print off the post lab questions and tables and have students complete the lab ap environmental weblabs uca labs with good descriptions and great standard and simulation labs. Choose from our kits, follow a college board lab, or design your own with our wide variety of equipment and supplies. We now know that inheritance is much more complex, usually involving many genes that interact in varied ways. Corn genetics chi square analysis tonybloglabreports. If this gene is homozygous recessive, the flower is not blue. Introduce your students to mendelian genetics with this activity that uses.
Dihybrid crosses in guinea pigs pdf step through on how to do a 4. Ap biology genetics lab california state university, northridge. Exams may not be posted on school or personal websites, nor electronically redistributed for any reason. Corn as an introduction to mendelian genetics carolina biological. Feb 20, 2015 in my biology honors class, my lab group and i conducted an experiment to apply our newfound knowledge of genetics using multicolored and multi textured corn. We offer topnotch chemistry supplies and ap chemistry products, backed by our. In my biology honors class, my lab group and i conducted an experiment to apply our newfound knowledge of genetics using multicolored and multi textured corn. One or both of these genetic elements are present in 85% of all gm crops currently approved around the world. Ap biology course overview ap biology courses are designed to cover a variety of specific topic areas and themes. Students study the inheritance of grain color using ears of corn.
Corn genetics lab requires purchased corn sample results from a dihybrid cross 4 pages in word and pdf format key included classical genetics and environmental influences exam and key 40 multiple choice questions7 pages in word and pdf helpful animations and video list 1 page in word and pdf with interactive links classical. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Corn genetics and chi square analysis 7302015 chi square analysis answer key corn genetics. Ap biology exam connections the principles of are tested every year on the multiple choice and occasionally make up portions. To observe phenotypes and use chi square analysis to determine if results are of good fit. The ap biology exam is designed to determine how well you have grasped and absorbed the material covered throughout the course. Carolinatm quantitative analysis and statistics for ap biology. Choose from 500 different sets of ap biology molecular genetics flashcards on quizlet. Students counted the number of purple and yellow kernels, counted the number of smooth and shrunken kernels and then used a chi square analysis to show that a 9. Using this data they perform a chi square analysis to. Chi square modeling using candy count the number of each color in a bag to determine if they occur in equal proportions. Before you begin, save this lab report template on your computer as lastnameapbiocorn.
Ap biology weblabs this site has a virtual lab on each of the dirty dozen ap biology labs. Mendelian genetics of corn overview this kit is has been designed for use as an introductory collegelevel genetics lab or, alternatively, as a high school honors, collegepreparatory, or ap biology lab. Ap biology lab corn genetics chisquare ap biology lab. Ap biology lab corn genetics chisquare ap biology lab 8. Ap biology exam practice gridin questions transmission genetics edition in snapdragons.
In the primula plant, flower color is the result of epistasis. Table i is essentially a genetic checkboard called a punnett square after r. Personal statement about what you learned from this lab activity. Standards mendelian genetics and chi square analysis are addressed in the topic outline of the college board ap biology course description guide as described below. Inevitably, the study of inheritance always leads to additional questions. Mendelian inheritance in corn gulf coast state college. If the layer is not pigmented colorless, the yellow color of an inner tissue shows through. Using the ratio of contrasting phenotypic traits in an ear of corn, you. Carolinatm quantitative analysis and statistics for ap biology s1 investigation 1.
Learn ap biology molecular genetics with free interactive flashcards. You are encouraged to print these or save them to your computer. Biology for ap courses covers the scope and sequence requirements of a typical twosemester advanced placement biology course. Laboratory 5 mendelian genetics department of biology. On two monohybrid corn, count the number of purple and yellow kernels and the smooth and shrunken kernels. When expressed, the bt gene produces a toxin that kills caterpillars and controls earworms that damage corn but is.