Combined ANSWERS Practice Exam III DOC

DO all of them please Multiple chpoice 11. Threshold concentration, morphogens, induction, and cell adhesion provide ________ to a developing organism.A) positional informationB) maternal effect genesC) homeodomainsD) lineage tracingAnswer: 12) What is the first stage of embryonic pattern development in Drosophila?A) limb positionB) body axesC) segmentation patternsD) metamorphosisAnswer: 13) A Drosophila larva that develops from an oocyte that has no bicoid mRNA will have what developmental defect?A) only ventral structuresB) no dorsal structuresC) only anterior structuresD) only posterior structuresAnswer: 14) The bicoid gene has what pattern of inheritance?A) sex-linkedB) incomplete penetranceC) maternal inheritanceD) autosomalAnswer: 15) A homeotic mutation results in which of the following?A) Incorrect formation of the body axesB) Replacement of segments with parasegmentsC) Replacing of one body part with anotherD) ApotosisAnswer: 16) Antennapedia in Drosophila is an example of a…

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30: 3. The genes for the human blood types MN and Ss are closely linked genes on chromosome 4. A sample of 2000 British people returns the following numbers of each type of chromosome: MS Ms F2 a) Estimate the gametic and allele frequencies. b) Calculate D. English (United States) Accessibility: Unavailable c) Test whether the two loci are in linkage disequilibrium in this population. #3 E d) What is the amount of disequilibrium relative to its maximum (or minimum) value? D e) What are the expected frequencies of chromosomes assuming linkage equilibrium? 80 F3 $ 474 4 Q F4 R F % 5 611 S F5 T G 6 NS 142 F6 MacBook Air Y H & 7 F7 U Ns 773 * 00 8 J DII F8 ( 9 Focus E F9 K 0 F10 L E I P

5. What is this passage mostly about?  a) Breeding for “tamability” in dogs b) The history of selective breeding from the Romans to today c) The advantages and disadvantages of selective breeding d) The problems associated with selective breeding in industrial farms

(4) What is the difference in the genome size (approximate number of base pairs) between a normal boy and a normal girl? A) 200 million B) 195 million C) 190 million D) 100 million

ne Genetics EI Multiple Choice and Short Answer 1. Gregor Mendel developed some basic principles of heredity by A))crossing pea plants * B) cutting off the tails of mice ¥C) breeding fruit flies D) culturing bacteria in a laboratory 2. Hereditary information for traits is located in A) genes found on chromosomes aB) chromosomes found on genes s C) the mitochondria of gametes as D) the lysosomes in the ytoplasm (A ide genes

How is DNA testing advantageous to paternity cases?   Question 27 options:   a)  It provides visual insight into genetically inherited differences among individuals.   b)  It provides insight into approximate time of conception.   c)  It establishes a means of stem cell transplantation for related individuals.   d)  It provides cloning capabilities in xenographic studies.

Describe the following techniques for determining gene or protein function with advantages disadvantages and limitations. i)forward genetics(random mutagenesis) ii)reverse genetics(altering the function of particular gene) iii)genetic analysis(double or higher order mutant combination) iv) expression studies RNA and protein v)protein interaction studies(Y2H and other technique)

Q.5. How are the alleles of a gene different from each other? What is its importance?

34. He Jiankui shocked the world in 2018 when he announced that he had created the first gene edited babies. What gene did he edit and why? A) HERC2 because he wanted the babies to have blue eyes. B) OCT4 because he wanted the babies to have lots of stem cells and age more slowly. C) ZNF446 because he wanted the babies to have high IQs. D) CCR5 because he wanted the babies to be resistant to HIV infection.

16. What is a cell that is not undergoing replication called? a) Inactivated b) Fallow c) Quiescent d) Cancerous 17. Which of the following equations would be most useful if you are trying to determine the probability of the first child, of 3 potential children, having an autosomal recessive trait. n! [x! Xy! A) B) p*q' e C) D) PK(gg) = PH(Gg) x PH(g) x Pi(g) E) None of these would be useful. 18. In the pedigree below, what is probability that II-1 and II-2 will have an affected child? a) 1/2 b) 1/4 c) 1/3 d) 2/3

Q1: Choose the correct answer of the following questions 1) Which can a chromosome map show? A) the sex of the individual B) the position of genes on a chromosome C) the presence of mutant alleles D) whether a gene is autosomal or recessive

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7) The same basic internal organs (kidneys, stomach, heart, and lungs) are found in frogs, birds, snakes, and rodents. This is primarily an example of A) structural homology B) developmental homology C) genetic correlation D) inheritance of acquired characteristics 8) A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed. Which of these explanations best explains what happened? A) The herbicide company lost its triazine formula and started selling poor-quality triazine. B) Natural selection caused the pigweed to mutate, creating a new triazine-resistant species. C) Triazine-resistant pigweed has less efficient photosynthesis metabolism. D) Triazine-resistant weeds were more likely to survive and reproduce. 9) After the drought of 1977, researchers hypothesized that on the Galápagos island Daphne Major, medium ground finches with…

Genetics Q2

I'm confused with question 11. Thanks for all your help!

(11) Genetic engineering utilized to create food sources has been said to be both like and unlike traditional breeding. One way it is different is: (a) It mixes genes from different individuals of the same or similar species (b) It involves whole organisms living in the field (c) It selects from combinations of genes that come together on their own (d) It mixes genes of different organisms such as viruses and crops, or spiders and goats

URGENT   2. Compare an autotetraploid and an allotetraploid to each other with respect to the characteristics listed below. Answer auto, allo, both or neither for each statement.   a) Fully fertile.b) Originated from 2 different ancestral diploid species.c) Contains 4 homologous copies of every chromosome.d) Balanced and unbalanced gametes can form.

Exercise 3: Pedigree analysis Identify the pattern of inheritance in each of the following pedigrees: 1) The most likely inheritance pattern in the pedigree above is:

31. A great deal of current molecular genetic research is focused on: A) the 97 percent of the human genome that is known to code for proteins B) the 20 percent of the human genome that is known to code for proteins C) the 3 percent of the human genome that is known to code for proteins D) the 1.5 percent of the human genome that is known to code for proteins

1.a) With the aid of annotated diagrams differentiate between incomplete dominance, complete dominance and codominance b) List and explain the 5 modes of inheritance in pedigree analysis c) With the aid of illustrative diagrams explain the three theories of DNA replication d) Discuss the impact of COVID-19 pandemic on ecosystems.

eve stripe 2 reporter A B Hunchback C D 6999 Kruppel E F D In the early Drosophila embryo, the even-skipped (eve) gene is expressed in a striped pattern. eve stripe #2 expression is controlled by a regulatory DNA sequence that includes binding sites for the regulatory proteins Hunchback and Kruppel. The boxed figure at left above shows the expression patterns, in the early embryo, of a reporter gene joined to the eve stripe 2 regulatory sequence, and of the Hunchback and Kruppel proteins. Which of the figures at right best predicts the expression pattern of the eve stripe2 reporter (blue) in a mutant embryo lacking the Kruppel protein? The dashed lines in each outline the eve stripe 2 position in a wild-type embryo.

2. Genetics enables us to understand how proteins interact with one another within the context of a living organism. Different types of mutations can give phenotypes that indicate these protein interactions. a) Why does a dominant negative phenotype indicate a protein may be acting as a homomultimer? b) Does a hypermorphic mutation also indicate this? Why or why not? c) If you have two mutant proteins that show a pseudo-reversion phonotype (second site suppressor) there is a strong possibility that the two proteins interact. Explain in your own words why a mutation in one protein can rescue (at least partially) the phenotype caused by a mutation in a completely different protein. d) Why are second site suppressor mutations allele specific?

8) The majority of direct-to-consumer genetic tests: A) must be obtained through a doctor B) makes medical diagnosis directly available to people C) are only available for conditions in which the test results are highly conclusive and reliable. D) analyzes associations found between particular gene sequences and increased risk for conditions

13. An investigator is studying epigenetic markers in patients with retinoblastoma. It is most appropriate for this investigator to focus on which of the following enzymes? A) DNA methyltransferase B) DNA polymerase C) Helicase D) RNA polymerase E) Topoisomerase

1. The Human Genome Project has demonstrated that in humans of all races and nationalities approximately 99.9 percent of the genome sequence is the same, yet different individuals can be identified by DNA fingerprinting techniques. a. What is one primary variation in the human genome that can be used to distinguish different individuals? b. How has the concept of a reference genome evolved to encompass a broader understanding of genomic variation in humans?

• Describe what it means that a strain of Drosophila is wild-type for a particular character. • Identify one mutant phenotype that can be observed in Drosophila.

Which of the examples of genetic testing below are prognostic tests? Which are diagnostic? (a) Individual sequencing (personal genomics) identifies a mutation associated with Alzheimer’s disease. (b) ASO testing determines that an individual is a carrier for the mutant b@globin allele (bS) found in sickle-cell anemia. (c) DNA sequencing of a breast tumor reveals mutations in the BRCA1 gene. (d) Genetic testing in a healthy teenager identifies an SNP correlated with autism. (e) An adult diagnosed with Asperger syndrome (AS) has a genetic test that reveals a SNP in the GABRB3 gene that is significantly more common in people with AS than the general population.