Download Final Exam | ANS 215 - Basic Agricultural Genetics and more Quizzes Animal Biology in PDF only on Docsity!
Genotype is inherited, not phenotype TRUE TERM 2 Crossing over occurs during prophase of mitosis DEFINITION 2 FALSE- occurs during prophase of meiosis TERM 3 A prokaryotic cell has a nucleus containing one circular DNA molecule DEFINITION 3 FALSE- prokaryotes have no nucleus TERM 4 males compensate for havin only 1 X chr by doublin the activity of the genes located on that X chr & producing 2x the amt of proteins DEFINITION 4 FALSE - females inactivate 1x chr bc only need 1x chromosome TERM 5 Mendels 2nd law stats that alleles at dif loci separate independently of one another if those loci are located on dif chr DEFINITION 5 TRUE
branch of genetics concerned w/ studying heredity in groups for traits determined by many genes simultaneously is: Quantitative genetics TERM 7 A Barr body is: DEFINITION 7 an inactivated X chromosome TERM 8 The appearance of traits expressed by genes in association w/ environmental influence is: DEFINITION 8 the phenotype TERM 9 In human males, genes on the X chromosome are DEFINITION 9 Hemizygous TERM 10 Homologous pairs of chromosomes align on the metaphase plate during: DEFINITION 10 meiosis only
the basic principles of heredity were first established as a result of breeding experiments performed by gregor mendel TERM 17 Which of the following is a bovine autosome? DEFINITION 17 chromosome 2 (x chrom & y chrom are gametes so has to be chromosome 2) TERM 18 During cell division cytokinesis is completed at the end of DEFINITION 18 telophase TERM 19 in the nucleus of eukaryotic cells the genetic material is combined with protein and organized into linear structures called: DEFINITION 19 Chromosomes TERM 20 In which of the following organisms is gender determination influence by the environment? DEFINITION 20 turtles!
Genetic diversity is a result of ______ at the end of meiosis 1 Crossing over TERM 22 Organisms that consist of cells in which the genetic materials is not located within a membrane bound nucleus are DEFINITION 22 prokaryotes TERM 23 the x and y chromosomes are non homologous but are able to pair and separate during meiosis due to: DEFINITION 23 pseudoautosomal regions TERM 24 w/ either autosomal dominant or an x-linked dominant mode of inheritance, it appears the disease skips generations DEFINITION 24 false TERM 25 a person with a particular genotype will always express the phenotype specified by that genotype DEFINITION 25 false
testing of members of a pop to identify carriers of a disease-causing allele & have potential to produce children with disease is: heterozygote testing TERM 32 what gene in horses is the color gene dominant to all other colors and lethal in homozygous dominant state? DEFINITION 32 W TERM 33 For x-linked recessive genes DEFINITION 33 all of the sons of a homozygous affected mother will exhibit the trait TERM 34 a _____ allele masks the expression of a different allele at a different locus. DEFINITION 34 epistatic TERM 35 autosomal dom trait has characterisitcs that are not always expressed in ppl who carry the dom allele, this allele is: DEFINITION 35 incompletely penetrant
non-parental combinations of alleles from linked genes may be observed if ____ occurs during meiosis. recombination TERM 37 for an x-linked dominant gene, ______ will express the trait. DEFINITION 37 heterozygous females and more males than females TERM 38 epistasis is different from multiple alleles at 1 loci, in that: DEFINITION 38 epistasis results when two or more genes interact to determine a phenotype TERM 39 interactions among the human ABO blood group alleles involve ____ and ____ DEFINITION 39 none of the above (it does not involve epistasis, multiple alleles, co-dominance, incomplete dominance, complete dominance, or lethal alleles) *** A-B blood type is codominant TERM 40 a range of phenotypes produced by a genotype in different environments is called: DEFINITION 40 Norm of reaction
the centromeres of metacentric chromosomes are located toward one end of the chromosome False TERM 47 a paracentric inversion involves the centromere DEFINITION 47 false TERM 48 both prokaryotic and eukaryotic chromosomes have transposable elements DEFINITION 48 True TERM 49 Molecules of messenger RNA are translated from 3' to 5', which is the opposite direction from which they're made DEFINITION 49 False TERM 50 in corn, DS transposition is controlled by AC DEFINITION 50 True
Old (template) and new (just synthesized) strans of DNA can be recognized by _____ methylation patterns TERM 52 non-replicative transposition DEFINITION 52 characterized by the movement of transposable elements from one location to another without replication of the element TERM 53 after a region of DNA has been replicated, _____ removes the RNA primers DEFINITION 53 DNA polymerase 1 TERM 54 Okazaki fragments are made from the ______ strand of the DNA double helix. DEFINITION 54 Lagging TERM 55 which enzyme is encoded by IS elements & is essential to their ability to move from location to location in the genome? DEFINITION 55 transposase
A picture of the complete set of stained metaphase chromosomes is a: karyotype TERM 62 what type of chromosomal rearrangement leads to an overall reduction in the amt of genetic mat. in the cell? DEFINITION 62 deletion TERM 63 in a nonreciprocal interchromosomal translocation, a segment of a chromosome is: DEFINITION 63 transferred to a different chromosome without a reciprocal exchange of genetic material TERM 64 a woman with Xo geneotype has turner syndrome and would be considered a(n): DEFINITION 64 aneuploid TERM 65 In the ___ repair system, the incorrect nucleotide remains in place and is modified back to its correct structure DEFINITION 65 direct repair system
the ___ is a specific regulatory nucleotide sequence in the DNA to which the RNA polymerase binds for initiation of transcript. promoter TERM 67 a normal cell contains two sets of 23 chromosomes, a total of 46 chromosomes. a trisomic cell would contain __ chromosomes. DEFINITION 67 47 TERM 68 the pentose sugar in RNA is: DEFINITION 68 ribose TERM 69 what describes a transposable element that is fully functional and able to transpose on its own? DEFINITION 69 autonomous TERM 70 which is not a spontaneous DNA mutation: base analogs, depurination, strand slippage, wobble base paring DEFINITION 70 base analogs
distrubutions with the same mean always have the same variance false TERM 77 a mutation that changes a codon from 1 that represents an amino acid to one that signals termination is a ___ mutation DEFINITION 77 nonsense TERM 78 at the conclusion of meiosis there are: DEFINITION 78 four haploid cells TERM 79 restriction enzymes that cut btwn diff. nucleotide pairs on the complementary DNA strands produce fragments with __ ends DEFINITION 79 sticky TERM 80 UV radiation creates ___ in DNA DEFINITION 80 thymine dimers
continuous traits show more than 1 phenotype bc they: are determined by more than one gene TERM 82 which of the following agents could be used to induce random mutations in DNA: DEFINITION 82 UV light, X-rays, sunlight TERM 83 in lilies white flowers are dom. to purp flowers. if 2 plants that are heterozy. for color are mated, the offspring would show what PHENOTYPIC ratio: DEFINITION 83 3: TERM 84 a key issue being considered by the bioethics program is: DEFINITION 84 fair use of genetic information, maintaing privacy of genetic info, the safe & effective introduction of genetic info in a clinical setting, professional and public education. TERM 85 which of the following is an example of a continuous trait: DEFINITION 85 color of seed pods in peasabo blood types in humanscoat color in micebirth weight in baboonsall of the aboveBIRTH WEIGHT IN BABOONS
a scientist in the field of functional genomics would be involved with which type of study? micro array experiments TERM 92 polymorphism can be detected by PCR amplification using primers that flank microstatellite markers only if: DEFINITION 92 the sequences of the flanking regions are known TERM 93 the sequence of bases of a molecule of mRNA is converted into corresponding amino acid sequence during DEFINITION 93 translation TERM 94 the first cellular organism to have its genome completely sequenced was: DEFINITION 94 haemophilus influenzae (flu virus) TERM 95 the type of mutation that results when a chromosome segment moves to a different location on the same chr is an: DEFINITION 95 intrachromosomal translocation
