Which of the following statements about the genetic code is

3 In mice dwarfism is caused by an X linked recessive allele and the pink coat is caused by an autosomal dominant allele Coats are normally brownish Suppose a dwarf brown female from a pure breeding line is crossed with a normal sized pink male from a pure breeding line What are the genotypes of the parental mice Define your own gene and allele symbols What will the predicted phenotypic ratios be in the F1 generation for each sex

What enzyme is responsible for covalently linking amino acids to the 3 end of the cognate tRNA peptidyltransferase O aminoacyl tRNA synthetase O glutamine synthetase RNA polymerase O ATP synthase QUESTION 35 Which of the following is not a normal property of eukaryotic mRNAs O They contain a continuous nucleotide sequence encoding a specific polypeptide O They are found in the cytoplasm and inside the Golgi complex O They are attached to ribosomes when they are translated O Most have a significant noncoding segment that does not direct assembly of amino acids O Eukaryotic mRNAs have special modifications at their 5 and 3 termini QUESTION 36

0 a dominant gene with Huntington s disease a degenerative brain disorder caused by Mark and Karen are Rachel s parents and have 2 other children Sam and Dave who do not carry the gene Mark s family has no history of Huntington s disease and he does not carry the gene Karen s father and his family do not carry the gene however Karen s mother died from complications from the disease o Both of Karen s maternal grandparents were carriers of the gene Case Study 5 Questions 1 Construct a Punnett Square for Mark Karen Abwa 2 What is Karen s genotype 3 What is the genotype of Karen s father 4 What is the probability that Karen Mark will have another child who carries the Huntington gene

Transcribe the following sequence of DNA into mRNA 3 TAC AAG TTT 5 O O O 5 AUG UUC AAA 3 3 ATG TTC AAA 5 3 AUG UUC AAA 5 3 AAA CUU GUA 5

hromosome A contains genes for an eye color of hazel Chromosome B contains genes for ha color of brown and chromosome C contains genes for an eye color of blue Which ones re homologous chromosomes a none of the chromosomes are homologous to one another b chromosomes A and C are homologous c chromosomes B and C are homologous d chromosomes A and B are homologous

Question 3 of 10 After being exposed to ionizing radiation an insect with red eyes has offspring that all have yellow eyes The offspring of the next generation all have yellow eyes as well Which claim is best supported by this information OA Inheritable genetic variations can form due to lateral gene transfers during conjugation OB Mutations caused by environmental factors can result in inheritable genetic variation OC Inheritable genetic variation can occur during meiosis due to independent assortment OD Errors can occur during replication causing new inheritable genetic variations

5 A black male crossed with a calico female to YR Y XBXB XBY XB VR v B VR V

and prevents the senescence of leaves Cytokinins Question 3 1 pts Identify the class of hormone that is growth inhibiting it promotes seed

Exercise 3 Questions Question 1 How are karyotypes used to screen for genetic disease E E T T B I U I 0 10000

In the following pedigree of an autosomal recessive disorder what is the probability that IV 1 will be affected I II III IV 2 3 O 1 2 O 3 4 1 12 Rr 1 1 Rr 2 R R R3 2 3 1 RR 3 R rr 1 5 Rr 4 2