Biology question and answers for November 22, 2023
- Q Sickle Cell Anemia arises from a single mutation in a gene. The Sickle Cell mutation is recessive (a).Which of the following individual genotypes would have Sickle Cell Anemia?aaABAAAAa
- Q In tracking the white gene in Drosophila that was discussed in class, a true-breedingwhite-eyed female fly is crossed to a red-eyed male fly. If a single nondisjunction event of the...
- Q Certain genetic diseases are associated with particular populations because among major factors in establishing high frequencies of particular alleles in specific populations includeinbreeding in small populationsthe preference for consanguineous matings...
- Q Cross a homozygous tasting and unattached earlobe parent with a homozygous non-tastingattached earlobe parent. What is/are the possible genotype(s) of the offspring?TTFF and ttffTtFf and TTFFTtFf, TTFF and ttffTtFf and...
- Q In certain wild animals with normally black fur there occurs a very strange kind of coloring that isknown as agouti. Each hair in the fur is black, but just below...
- Q Which of the following are true about DNA and RNA (select all that apply)?DNA is a much larger molecule than RNADNA is double stranded while RNA is single strandedDNA contains...
- Q Indicate whether the genotype listed is heterozygous, homozygous recessive or homozygousdominanthomozygous recessiveheterozygoushomozygous dominant
- Q Color blindness is recessive, x-linked trait. In marriages between a man who is colorblind and a woman who is a carrier what percentage of the children can be expected to...
- Q A pea plant is heterozygous for both seed shape and seed color. S is the allele for the dominant, spherical shape characteristic; s is the allele for the recessive, dented...
- Q Brown eyes are dominant to blue eyes. What is the phenotype for a person with the following genotypes?BBBbbb
- Q What differs between two alleles of the same gene?The cell they're in. One might be in a liver cell and the other in a blood cell.The chromosome they're on. One...
- Q Which of the following is a result of T.H. Morgan and Lynch's (1912) study on linkage?phenotypic combinations in the F2 generation were not found in equal ratiosno new phenotypic combinations...
- Q If genes are "sex-linked," then they areexpressed only in women or only in mentypically on the X chromosomeonly on the Y chromosomelocated next to one another
- Q Assuming incomplete dominance, if a homozygous red-flowered plant (RR) is crossed with a homozygous white-flowered (rr) plant, what will be the color of the offspring? White red and white Red...
- Q Which discovery did Gregor Mendel make?Traits are inherited independently of each other.Traits are inherited as a tetrad.Traits are inherited as homologous pairs.Traits are inherited as a set, from one parent.
- Q UV radiation is an ionization radiation that is useful for disinfecting surfacesTrueFalse
- Q Cross a homozygous green plant with a heterozygous green plant.
- Q Instructions: Students will need to show all work including writing out the crosses and the resulting gametes as well as Punnett squares. The final responses need to be marked with...
- Q Snapdragon flower color is an example of incomplete dominance. A) Cross a white-flowering plant with a red-flowering plant. What are the expected genotypic and phenotypic ratios in the F1? B)...
- Q In human blood types Type A and B are co-dominant while Type O is recessive to both A and B. If a Type A individual marries a Type O individual,...
- Q Hemophilia is a recessive, sex-linked disease. a) A male with no history of hemophilia marries a woman whose father was a hemophiliac. Of their sons, what proportion would be expected...
- Q In summer squash, yellow fruit color dominates over white. A white-fruited plant is crossed with a yellow-fruited one and produced 51 white and 49 yellow fruited plants.
- Q In alligators, rounded snout is dominant to a pointed snout. Cross a homozygous rounded snout alligator with a pointed snout alligator. What are the expected genotypic and phenotypic rations in...
- Q In humans, color-blindness is a recessive, sex-linked disease. A male who is color-blind marries a woman with normal vision but whose father was color-blind. OF THEIR SONS, how many can...
- Q In humans, blood Rh factor is an example of complete dominance (alleles for "positive" Rh factor completely dominate the "negative" allele). Blood type is an example of co-dominance. A person...
- Q 3a) In tomatoes the skin may be smooth or hairy. Crosses between a true- breeding smooth-skinned tomato and a true-breeding hairy tomato produce all smooth fruit. (HINT: this should tell...
- Q In Pine trees, cones may be small or large. A true-breeding, small-coned plant is crossed with a true breeding large-coned plant. All offspring are large-coned. Which trait is dominant and...
- Q A female who is color blind marries a male with no history of the condition. Show the problem. Of their children, what proportion would be expected to be color blind?...
- Q A female with type A- blood marries a male with type AB+ blood. The female is heterozygous for blood type. The male is heterozygous for rh factor. Show the problem....
- Q Cross two pink-flowering Snapdragons. What are the expected genotypic and phenotypic ratios in their offspring?
- Q In sea horses long tail is dominant to short, and thick scales is dominant to thin. Cross two seahorses that are heterozygous for both traits. What are the expected genotypic...
- Q In Humans, long eyelashes is dominant to short. A female with long eyelashes marries a man who also has long eyelashes. They have a daughter with short eyelashes. How is...
- Q In Coleus plants, deep leaf margins are dominant over shallow leaf margins. Red leaves is dominant over green. If an individual that was heterozygous for both traits was crossed with...
- Q A large-coned plant from the problem above is crossed with a small-coned plant. They produce 735 offspring. 351 offspring were small-coned, while 384 were large-coned. What are the genotypes of...
- Q What are the two main sources of genetic variation in organisms?mutation and genetic driftgene flow and genetic driftnatural selection and mutationmutation and sexual reproduction
- Q In a group of cucumber plants, some individuals have bumpy fruit and others have smooth fruit. In this group, the gene for the fruit texture trait has two alleles. The...
- Q Inheritance and Expression of Traits:Question 5Which molecule stores the instructions for various traits in an organism?Select one:Carbohydrate.Lipid.Protein.Deoxyribonucleic acid.
- Q A deletion mutation causes three consecutive nucleotides to beremoved from the DNA code.Which options describe the possible effects of this mutation?se all that apply:One amino acid may not be present....
- Q Genetic Diversity and Population Survival:Question 9Which of these results from making the sperm and egg cellsneeded for sexual reproduction?An introduction of a new gene into the organism.The loss of nucleotides...
- Q Synthesis of an inducible enzyme is started by theO inducer inactivating repressorO corepressor activating repressor and binding to operatorO corepressor binding to the operator
- Q Which of thefollowing is thestudy of heredityand how geneticinformation istransferred fromparents to theiroffspring?A. GeneticsB. BiologyC. Geneology
- Q In dogs, the allele for straight hair (H) is dominant to the allele for curly hair (h). A straight-haired dog is crossed with another straight-haired dog. They produce only two...
- Q In Drosophila melanogaster, the black body (b*) is recessive to the gray body (b*), purple eyes (pr) are recessive to red eyes (pr*), and vestigial wings (vg) are recessive to...
- Q Eukaryotes such as humans contain mitochondria where the process of cellular respira tion occurs The mitochondria play a key role in energy production for eukaryotic organ isms The mitochondria contain...
- Q The diploid number of chromosomes in the cell of a koala bear Phascolarctos cinereus is 16 The table below shows the number of chromosomes in a cell of a koala...
- Q Tall plants T are dominant over short plants t and white flowers g are recessive to green flowers G What is te chance of a white short plant being produced...
- Q 1 Antibiotics are medicines that are used to fight bacterial infections These medicines kill prokaryotic cells without harming human cells What part or parts of the bacterial cell do you...
- Q The megaplate video is an example of which form of horizontal gene transfer often observed in bacteria
- Q In the lac operon if lactose is present the repressor is active and the operon is A turned up C turned on B turned off D excised
- Q RNA modification leaves the exons intact because these are the portions that will be as a phenotype A interpreted C expressed B excised D intercalated
- Q A The trait is eye color P wild type female x white w male If the F1 result is 15 wild type females and 10 wild type males the phenotypic...
- Q A horse and a donkey can interbreed but they are considered different species because A they look different B their offspring are sterile C they produce a mule D of...
- Q A In this DNA fingerprint how many bands does the main suspect share with the crime scene CS result B C CS 1 2 3
- Q In eukaryotes RNA polymerase is prevented from completing transcription by factors A silencer transcription B silencer translation C methylation
- Q Which of the following is NOT a form of post transcriptional control A B RNA processing Spliceosome C siRNA and miRNA D Rnase
- Q The regulatory gene of an operon codes for the production of a n A promotional protein B enhancer protein C repressor protein D operon
- Q In terms of gene expression genes have the control to be A turned on and off B expressed genotypically C expressed without energy use D removed
- Q In terms of evolution oognesis can be to the organism as its resources can be focused towards individuals deleterious B advan tageous selected against
- Q Part 4 Mutations How does mutation in a bacterial genome contribute to the development of antibiotic resistance
- Q 6 Describe meiosis and identify diploid to haploid cells Give the stages of the process 7 When during meiosis do you have crossing over 8 How is mitosis and meiosis...
- Q Which of the following is NOT part of a gene A coding B stop C repair D promoter
- Q The region of the gene is where the reading of the molecule begins A operon B stop C promoter D DNA primer
- Q Which of the following is NOT a difference between DNA and RNA A number of helices B type of sugar C types of nucleotides D presence of guanine
- Q on the Human Insulin and Cow Insulin charts that each of these Coded portions would produce In addition for the DNA sequences above write the complementary mRNA base sequence to...
- Q Select the best answer for the question 3 Cystic fibrosis is a recessive genetic disease caused by a mutation in the gene that encodes the CFTR protein which transports chloride...
- Q Q5 Humans carry a variety of non functional genetic sequences called processed pseudogenes in their DNA We can estimate how long ago these sequences first appeared in the genomes of...
- Q Q4 9 Which of the following segments of DNA would require the most energy to separate the two strands Segment A PC Ga PG CQ PG CQ PT AQ PT...
- Q The pedigrees are for a rare autosomal trait What is the chance that individual A is a carrier 2 3 O 1 4 0 1 1 2 0 5600 00000...
- Q Q4 2 In the diagram below showing four DNA replication bubbles RNA primers are shown as red while DNA is black Which bubble has the correct 5 and 3 labels...
- Q c Similar amino acid sequences for the enzyme cytochrome c are found different species The chart shows the amino acid sequences for a segment of cytochrome c found in humans...
- Q 20 This is the protein on the target cell that HIV uses for attachment A CD4 B CD8 C CXCR4 D gp16 E gp120 21 Transcription begins at a an...
- Q passive transport mechanisms used by cells to test your understanding of active and passive transport Check All That Apply Simple diffusion Carrier mediated active transport Group translocation Facilitated diffusion
- Q During translation a one mRNA molecule works with several rRNA molecules and many tRNA molecules to produce a protein b one tRNA molecule works with paired mRNA molecules and many...
- Q vbout 50 of cases of viral hepatitis in US are caused by HBV which is one examp eveloped DNA virus Why is then HBV classified as a reverse transcribing virus...
- Q RNA polymerase adds an RNA nucleotide complementary to strand s of the DNA molecule during transcription A the lagging and leading B one C both D the lagging
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