How many unique gametes could be produced through independent assortment by an individual with the genotype AaBbCCDdEE?a.4 d.32b.8 e.64c.16Peptide bonds form between ________. A) amino acids B) an mRNA codon and a tRNA anticodon C) a tRNA and the amino acid it is carrying D) an mRNA transcript and the small ribosomal subunitA plant with purple flowers is allowed to self-pollinate. Generation after generation, it produces purple flowers. This is an example ofa. hybridization b. incomplete dominance c. true-breedingd. the law of segregatione.polygenetics.What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants?a.There is considerable genetic variation in garden peasb.Traits are inherited in discrete units, and are not the results of "blending."c.Recessive genes occur more frequently in the F1 than do dominant ones.d.Genes are composed of DNA.e.An organism that is homozygous for many recessive traits is at a disadvantageThe main purpose of genetic testing for changes in chromosomes, genes, or proteins is to __________.Choose the correct answer.a. look for the natural variation in DNAb. prevent genetic discrimination by employersc. assess the risk of having or carrying a genetic condition or disorderd. restrict carriers from ever passing on genetic conditions to newbornsWhich of the following is (are) true for alleles?a.They can be identical or different for any given gene in a somatic cellb.They can be dominant or recessive.c.They can represent alternative forms of a gened.Only A and B are correcte.A, B, and C are correctWhat is the difference between a monohybrid cross and a dihybrid cross?a.A monohybrid cross involves a single parent, whereas a dihybrid cross involves two parentsb.A monohybrid cross produces a single progeny, whereas a dihybrid cross produces two progenyc.A monohybrid cross involves organisms that are heterozygous for a single character, whereas a dihybrid cross involves organisms that are heterozygous for two charactersd.A monohybrid cross is performed only once, whereas a dihybrid cross is performed twicee.A monohybrid cross results in a 9:3:3:1 ratio whereas a dihybrid cross gives a 3:1 ratioA cross between homozygous purple-flowered and homozygous white-flowered pea plants results in offspring with purple flowers. This demonstratesa.true-breedingb.the blending model of geneticsc.dominance.d.a dihybrid crosse.the mistakes made by MendelWhat is the purpose of CRISPR?Choose the correct answer.a. accurately cut DNAb. make many copies of DNAc. place a plasmid inside a celld. replace old DNA with new DNAA sexually reproducing animal has two unlinked genes, one for head shape (H) and one for tail length (T). Its genotype is HhTt. Which of the following genotypes is possible in a gamete from this organism?a.HT d.Tb.Hh e.ttc.HhTtTwo plants are crossed, resulting in offspring with a 3:1 ratio for a particular trait. This suggestsa.that the parents were true-breeding for contrasting traitsb.incomplete dominancec.that a blending of traits has occurredd.that the parents were both heterozygouse.that each offspring has the same allelesWhich of the following would NOT be considered an application of genetic engineering?Choose the correct answer.a. creating Dolly the sheep (a clone)b. creating herbicide-resistant crop plantsc. creation of bacteria that produce human insulind. creating Atlantic salmon that contain a gene from Chinook salmonWhat is the end goal of PCR?Choose the correct answer.a. determine the order of bases in DNAb. determine the risk for a genetic disorderc. replace damaged DNA with undamaged DNAd. obtain large amounts of identical sequences of DNAPeople with Down syndrome have __________.Choose the correct answer.a.45 chromosomesb. 46 chromosomesc. 47 chromosomesd. no X chromosomesThe goal of PCR is to make many more copies of a specific section of DNA.TrueFalseA mutation within a gene that will insert a premature stop codon in mRNA would ______. A) result in a polypeptide that is one amino acid shorter than the one produced prior to the mutation B) result in a shortened polypeptide chain C) change the location at which transcription of the next gene begins D) have the same effect as deleting a single nucleotide in the geneWhat is the smallest number of nucleotides that must be added or subtracted to change the triplet grouping of the genetic message? A) one B) two C) three D) fourCrop plants can be genetically engineered to add favorable characteristcs, including improved yields and resistance to weed killers and destructive pests.TrueFalseGenetically engineered growth hormone increases milk production in dairy cows and weight gain in cattle and hogs.TrueFalseWhat is the name for an organism that contains one or more genes from another organism?Choose the correct answer.a. cloneb. plasmidc. transgenicd. combination
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