Study that deals with heredity/ inheritance 1-100
Passing of traits from one generation to the next 1-200
1-300 Both alleles are expressed in offspring red +white=pink
Incomplete Dominance 1-300A
1-400 An allele inherited on a sex chromosome.
Sex-linked gene 1-400A
1-500 Inserting DNA into a bacteria pg 144.
Recombinant DNA 1-500A
A masked gene in an organism; it does not physically show up in the organism
2-200 Change in genes that result in new traits
2-300 Gene that determines the appearance of a trait in a heterozygous cross
2-400 Phenotype controlled by many genes. Ex. Finger prints or hair color in humans
Polygenetic Traits A
2-500 A normal allele is inserted into a virus.
Gene therapy 2-500A
Mendel was the first to discover the ________ and _________ forms for traits.
Dominant and recessive 3-100A
3-200 What controls the traits in an organism?
3-300 If a plant had the tall and short allele (Tt) would it be medium in height?
The dominant is expressed in a heterozygous cross A
3-400 Gregor Mendel is called the father of genetics… Why? Explain what plant he experimented with and what he discovered about traits.
He worked with pea plants and traced traits for three generations. He used the mathematics of probability to discover dominant and recessive traits. -400A
3-500 You cross two parent pea plantspea plants: One with yellow pods One with green pods. In the 1 st generation all the pods are green, but In the 2 nd generation three pods are green and one yellow. Tell me which trait is dominant and which recessive, be sure to explain why this occurs.
Green pod dominant, yellow recessive. We know that recessives will occur 25% of the time when crossing two heterozygous parents. We see the 25% occurrence in the 2 nd generation
In a Punnett square how do we represent dominant and recessive traits?
Dominants are written as capital letters (T) and recessives are written as lower case letters (t) 4-100A
4-200 Mutiple Choice Blood type is an example of: A. mutiple alleles. B. A pair of genes C. How vampires date.
A. Multiple Alleles 4-200A
4-300 Compare and contrast genotype and phenotype.
4-300A They are contrast because genotype is the genes you have, and phenotype is the physical expression of your Genes. They compare in that your genes (genotype) is what makes you look a certain way (phenotype). Ex. TT genotype = tall phenotype.
4-400 What are the three types of cloning?
Gene cloning, Reproductive cloning, Therapeutic cloning A
4-500 Define a mutation, and tell me if all mutations are harmful?
4-500A Mutation- any permanent change in a gene of an organism. Some mutations do harm, like an albino deer. Some mutations helpful like cheetahs having non retracting claws. Some cause death like cystic fibrosis.
Two Part Question Are traits you get from parents random, or can we mathematically explain the occurrence of a trait? How do you know? Is awesomeness a genetic trait that I can Give to Lilly?
5-100A We can use Punnett squares to find the probability of a trait being passed from parents to offspring, so traits are not random. No my awesomeness is a behavior Not a trait that can be passed.
5-200 How are males, females and affected people represented on a pedigree?
Males are squares and females are circles. Affected are shaded 5-200A
5-300 In guinea pigs short fir is dominant (S) and long fir is recessive (s). Make a Punnet square showing how this parents could have a long furred offspring.
5-300A The Punnett square would be Of two heterozygous parents. S s S s SS Ss ss long
5-400 Below is a pedigree of Huntingtons: is this a dominant or recessive disorder? Explain.
Dominant: it is expressed in every generation this is typical of dominant disorders A
5-500 Is this a dominant disorder or sex-linked, explain how you know.
Sex-linked. Sex-linked diseases are caused by a recessive gene on the X chromosome. This means that ONLY females will show as carriers. With dominant disorders male and females can carry A
What is genetic engineering?
Changing DNA or genes to improve an organism
6-200 Who was Dolly and why was she important?
6-200A She was the first sheep clone made by nuclear transfer. The same technique could be used to make human clones.
6-300 Tell me three things discussed during the genetics debate
6-300A Clone rights: dont use them as spare parts, they must be protected, but what about organs that we have two or more of? twins: Using cells from a healthy twin to one who is ill. same to do in a clone Underground cloning: no rules if no one knows. Cloning: has negative moral implications. A large number of clones will die before it works. Extra pressure if you were Einstein's clone. People could steal your dna(blood, nail or hair) and use it to make a clone. A clone WILL NOT bring back a loved one! not the same person. Would a clone taken from an adult live only for a short time? say 33 year old clone will only live 30 more years even though your clone is a baby.
Your book gives a genetically modified fruit. What is it and what was modified. What do we hope to do in the future with engineered plants. Two part question
Modified tomatoes that can be shipped green and ripen in a truck. In the future plants will produce chemicals to make insects not eat them A
6-500 You will be altering an animal through gene transfer you must: give an example of a disorder. Then describe how you would use gene transfer to cure the disorder.
Parent1:Genotype=AaCc Parent2:Genotype=aacc Dihybrid Cross They are cute, but deadly predatory teddy bears Found on a small island off of Jersey. The A alleles are for acid breath. Dominant is acid breath recessive is lack of acid breath. The C alleles are for claws. Dominant is claws and recessive is lack of claws. Tell me how many of the offspring will have the phenotype for acid breath and claws?
Answer Gene 1 Gene 2 ACAC AcAc aCaC acac acac acac acac acac Aa Cc Aa cc aa Cc aa cc Aa Cc Aa cc aa Cc aa cc Aa Cc Aa cc aa Cc aa cc Aa Cc Aa cc aa Cc aa cc Four will have claws and acid breath.