ANIMAL SCIENCE UNIT 2 Name _______________________________________________________________________ Date ________________ Hour _______ 2.1 Unit Word Search ACTIVITY Student Materials Pencil Directions Fill in the blank with the correct term from the word bank. Find the word within the word search. ____________________________ 1. If an animal’s genotype includes a recessive and dominant gene, it is _____. ____________________________ 2. An animal’s calf, lamb, or piglet is known as the _____. ____________________________ 3. When a sperm enters the egg, _____ occurs. ____________________________ 4. Using a _____ helps predict the progeny from the parents' genotype. ____________________________ 5. The _____ is the organelle that is responsible for protein production. ____________________________ 6. Sex cells are called _____. ____________________________ 7. The genetic makeup of an animal that cannot be seen is called the _____. ____________________________ 8. A capital letter like "B" represents _____ genes. ____________________________ 9. A _____ is a group of animals with similar genotypes. ____________________________ 10. During meiosis, _____ is what causes genes to mix-up and cause diversity. ____________________________ 11. The basic unit of all living things is the _____. ____________________________ 12. PP and pp are examples of _____ gene pairs. ____________________________ 13. Traits that are associated with male or female animals are called _____. ____________________________ 14. The male gamete is called _____. ____________________________ 15. Animals characteristics are also called _____. ____________________________ 16. The science of inheritance is called _____.
Transcript
ANIMAL SCIENCE UNIT 2
Name _______________________________________________________________________
Date ________________ Hour _______
2.1 Unit Word SearchAC T I v I T y
Student MaterialsPencil
DirectionsFill in the blank with the correct term from the word bank. Find the word within the word search.
____________________________ 1. If an animal’s genotype includes a recessive and dominant gene, it is _____.
____________________________ 2. An animal’s calf, lamb, or piglet is known as the _____.
____________________________ 3. When a sperm enters the egg, _____ occurs.
____________________________ 4. Using a _____ helps predict the progeny from the parents' genotype.
____________________________ 5. The _____ is the organelle that is responsible for protein production.
____________________________ 6. Sex cells are called _____.
____________________________ 7. The genetic makeup of an animal that cannot be seen is called the _____.
____________________________ 8. A capital letter like "B" represents _____ genes.
____________________________ 9. A _____ is a group of animals with similar genotypes.
____________________________ 10. During meiosis, _____ is what causes genes to mix-up and cause diversity.
____________________________ 11. The basic unit of all living things is the _____.
____________________________ 12. PP and pp are examples of _____ gene pairs.
____________________________ 13. Traits that are associated with male or female animals are called _____.
____________________________ 14. The male gamete is called _____.
____________________________ 15. Animals characteristics are also called _____.
____________________________ 16. The science of inheritance is called _____.
ANIMAL SCIENCE UNIT 2
2.1AC T I v I T y
____________________________ 17. The outward expression of the genotype is the _____.
____________________________ 18. _____ judges an animal based on it’s own individual merit.
____________________________ 19. A genotype of "rr" includes only _____ genes.
____________________________ 20. During mitosis, DNA is _____ before cells split.
Name _______________________________________________________________________
Date ________________ Hour _______
2.2 Cell Review – Organelle AnalogiesAC T I v I T y
Student MaterialsPencilInternet access
DirectionsUtilize the Internet or other resources to research the organelles listed below. your task is to create an analogy image for each organelle and an explanation of why the chosen analogy fits. An analogy is a similarity between like features of two things, on which a comparison may be based. For example, the cytoplasm is like soil in a planter because it holds all of the plants in place and transports the water to the plants. Complete an analogy for each of the organelles below.
IntroductionMitosis and Meiosis are important processes when discussing animal genetics and how genes are transmitted to other animals. This process is explained in your text and can also be found through a simple Internet search for mitosis and meiosis. Your task is to create a “flip book” which will model the process of mitosis and meiosis.
Directions 1. Cut 100 slips of paper so they match exactly. It is best to cut two-inch strips from 8.5 by 11 inch paper
creating long, two-inch wide strips. This will make for the best “flipping”. 2. Utilize a binding clip to hold the 100 pages together. 3. Leave 10 pages blank in the front and back of the book (helps the flipping work better). 4. Starting from the back, begin drawing each step of mitosis. The goal is to draw the small changes that
occur through the process so that when the book is flipped, a “movie” of mitosis is created. 5. Once mitosis is complete, create a title page for meiosis and continue the flipbook by adding meiosis. 6. Be creative! You can add all kinds of effects to the flipbook to add to the “movie”. 7. Share your flipbooks with each other.
Example:This is an example of what your flipbook would look like.
ANIMAL SCIENCE UNIT 2
Name _______________________________________________________________________
Date ________________ Hour _______
2.4 Further Research – Trisomy 21AC T I v I T y
Student MaterialsPencil
IntroductionTrisomy 21 is a human genetic condition that is related to an organism’s chromosomes. Below is a human chromosome map. Use this map to answer the questions.
Questions 1. Is this individual affected by Trisomy 21? Explain why or why not.
Name _______________________________________________________________________
Date ________________ Hour _______
2.5 Spider SyndromeAC T I v I T y
Student MaterialsPencil
The Spider Lamb Syndrome (SLS) is an inherited genetic disorder that is typically deadly for sheep that express the disease. Spider Lamb Syndrome is also known as Hereditary Chondrodysplasia. It is a genetically acquired disorder that results in deformities of the skeleton in young lambs. This disorder is a recessive genetic disorder. This means that lambs that have this disorder receive one recessive gene from both parents. This disorder is found predominantly in blackface lambs. General figures show that 75% of the lambs that have it are of the Suffolk breed, and 25% are of the Hampshire breed.
Case StudyThe Davis family has just added 100 ewes to their flock. They were surprised by an odd disorder that a number of the lambs exhibited during the first lambing season after the addition of the new ewes. A veterinarian comes to look at the lambs and asks if the previous owner of the new ewes had worked to make sure the Spider Gene was not present in their flock. You know the previous owner uses only their own two bucks for breeding and has never had the Spider Gene show up in the flock. The Davis family is worried they have made a mistake.
Questions 1. How would you begin to figure out how SLS has entered the Davis’ flock?
5. Using any resource you can find, research ways to avoid situations like the one in this case. How have people learned to manage the tricky nature of SLS? Be prepared to share your findings with the class in a group discussion.
*For more information on Spider Syndrome, see OSU Extension Fact Sheet CR-3902.
ANIMAL SCIENCE UNIT 2
Name _______________________________________________________________________
Date ________________ Hour _______
2.6 Genotype and Phenotype Venn-DiagramAC T I v I T y
Student MaterialsPencil
Directions Genotype and Phenotype are two terms used when discussing genetics. These terms have many characteristics in common as well as many differences. Utilize the venn-Diagram below to compare and contrast genotypes and phenotypes. In the Genotype circle, write characteristics that are unique only to genotypes. In the Phenotype circle, write only characteristics unique to phenotype. In the middle, write characteristics that are common to both.
Genotype Phenotype
ANIMAL SCIENCE UNIT 2
Name _______________________________________________________________________
Date ________________ Hour _______
2.7 Punnett Square Case Studies – One TraitAC T I v I T y
Student MaterialsPencil
DirectionsRead each of the following cases, complete the Punnett Square, and then answer the questions regarding the resulting progeny.
Case #1: A heterzygous polled female (Pp) is mated with a homozygous polled male (PP). Complete the Punnett Square.
1. How many genotypes result and what percentage will fit that genotype?
Name _______________________________________________________________________
Date ________________ Hour _______
2.9 Animal Agriculture Consultant – What Really Matters?AC T I v I T y
Student MaterialsPencilHeritability charts in textbook
QuestionsLivestock producers have to choose breeding animals that will help improve their operation. “Judging” animals is an important skill. How does the concept of heritability change the way you would:
Name _______________________________________________________________________
Date ________________ Hour _______
2.10 Name That Genetic Disorder QuizAC T I v I T y
Student MaterialsPencil
DirectionsUsing the clues given, identify the matching disorder.
1. This disorder leads to the death of the animal ___________________________________
2. Large eye sockets and short and broad nasal cavities ___________________________________
3. Lowering of the head, foaming at the mouth and a coma ___________________________________
4. Failure in circulation system of swine due to stress ___________________________________
5. A loss of hair all over the body of an animal ___________________________________
6. Bent forelimbs and a twisted spine ___________________________________
7. A sex-linked trait causing blood to not coagulate ___________________________________
8. Short-headed, Short-legged, and Pot-bellied ___________________________________
9. Ligaments in the feet deteriorate ___________________________________
10. A calf is born with an opening of the skull ___________________________________
11. A lower jaw that is shorter than the upper jaw ___________________________________
EpilepsyDwarfismSplay Toe
HairlessnessCerebral HerniaHemophilia
AgnathiaSpider SyndromeBulldog
Porcine Stress SyndromeLethal Genes
ANIMAL SCIENCE UNIT 2
Name _______________________________________________________________________
Date ________________ Hour _______
2.11 Calculating Production NumbersAC T I v I T y
Student MaterialsPencilCalculator
DirectionsComplete the following production calculations based on the situation provided. Show all your work and circle your final answer.
Scenario #1: A producer has 24 head of market steers with the following weights:
Calculate the Index for each of the animals in bold. Hint: This will also require you to calculate the overall average weight.
Scenario #2: Rancher John has 78 total cows, and was excited to have 65 calves this season. What percentage calf crop did Rancher John achieve, and would you be bragging if you shared that percentage?
566610505499556532565576
499589565487606600569598
523514587567534478465546
ANIMAL SCIENCE UNIT 2
Name _______________________________________________________________________
Date ________________ Hour _______
2.12 EPD’s – Making Sense of the NumbersAC T I v I T y
Student MaterialsPencilMagazines with various animals and EPDs
Directions 1. Find a set of EPDs for any animal of your choice. 2. Research the EPD numbers and take notes in regards to the strengths and weaknesses of the animal. 3. Make a final decision on the animal based on your preferences and the EPD data provided. 4. Be prepared to share and discuss your animal and EPD records with the class.
Name of the Animal
Strengths of this Animal’s EPDs Weaknesses of this Animal’s EPDs
Which production situations best fit this animal? What traits are needed in a mate to balance the characteristics?
Selected EPDs that are important to you (show us the data)
ANIMAL SCIENCE UNIT 2
Name _______________________________________________________________________
Date ________________ Hour _______
2.13 Gene Testing CattleAC T I v I T y
Student MaterialsHighlighters/markers - three colorsOSU Extension Fact Sheet AGEC-255
Directions 1. Read The Economics of Gene Testing Cattle.
2. While reading, use the following coding system. Make a key for your coloring system on the fact sheet.
a. Color one: Things that are very interesting to me. b. Color two: Things I don’t quite understand. c. Color three: Things I don’t agree with.
3. Look up each of the words you do not understand, and define them below.
4. Be prepared to carry on a discussion with the class and turn in your article to be graded for participation.
Name _______________________________________________________________________
Date ________________ Hour _______
2.14 Genetic Testing DebateAC T I v I T y
Debate Instructions 1. Get into debate teams of 3 to 4 people. It doesn’t matter what your belief is because you will debate
both sides of the issue. 2. Research both the arguments for genetic testing, and those against it. you will be debating both; so it
is important to be prepared to argue either case. 3. Prepare opening statements (one for and one against) to share at the beginning of the debate. 4. Prepare to respond to questions that are posed by the opposing debate team. 5. Utilize the rubric below to prepare. It will be used to calculate your grade. 6. Format of the debate: a. Teams randomly draw for their number and stance. b. Both teams present opening arguments. c. Teams are allowed to ask the other team three questions. d. Teams respond to each other’s questions. 7. The teacher will serve as the judge and will score your debate using the rubric provided.
Guideline Points Teacher Comments & Score
ContentThe debate team has done research and is knowledgeable about the topic of genetic testing. This knowledge should be shared by each member of the team.
50
Opening StatementsTeam has well-prepared arguments and each person on the team is involved in making their case.
25
QuestioningTeam has prepared deep and meaningful questions for the opposing side. Teams are also able to answer the questions asked by the other team.
25
Total 100
ANIMAL SCIENCE UNIT 2
Name _______________________________________________________________________
Date ________________ Hour _______
2.15 Unit Crossword PuzzleAC T I v I T y
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EclipseCrossword.com
ANIMAL SCIENCE UNIT 2
2.15AC T I v I T y
Across
1. Process during meiosis allowing traits and DNA to be mixed up 3. Outward expression of a genotype 5. DNA is packed into these 6. Refers to the chance that a trait will be passed to offspring 9. Possible cause of sterility11. Sex cell14. Offspring15. An animal's genetic characteristics16. X chromosomes contain more of this than y chromosomes 17. Result of problems in the meiosis process that leads to genetic
combinations that differ from a normal cell 18. Abnormal genetic condition causing the animal's blood to not
clot properly
Down
1. Basic unit of life 2. Gene that is present but not always expressed 4. Process of sperm and egg uniting 6. "PP" is ____ dominant 7. Producers choose these differently for a variety of reasons 8. We use _____ testing data to compare an animal to others.10. Branch of biology that deals with the study of genes and how
traits are passed from parent to offspring12. _____ Progeny Difference 13. Based on a scale of 100 and represents average performance
