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. All the genes on one chromosome are said to form a
a. chromosomal group.
b. recombination group.
c. linkage group.
d. crossing-over group.
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- During the molecular process of homologous recombinationbetween homologous chromosomes,a. a Holliday junction forms.b. branch migration occurs.c. a heteroduplex region forms.d. all of the above occur.Which is NOT an affect of chromosomal translocations? A. Translocation breaks can disrupt existing gene function. B. All of the above. C. Translocated genes may become under the control of different regulatory sequences. D. Translocations can cause regions of the chromosome to be duplicated. E. Translocations can affect the number of chromosomes found in species through evolution.A geneticist determines that the order of four genes on a specific chromosome is CABD because the recombination frequencies were 35% for C-D, 24% for A-D, 23% for B-D, and 10% for A-B. What has the geneticist constructed? A. a physical map B. a karyotype C. a cytogenic map D. a linkage map
- When recombination (“crossing over”) doesn’t happen correctly, what type(s) of mutations that can occur? Mark all that apply Select one or more: a. Deletion of part of a chromosome b. Translocation (transfer of part of a chromosome to a non-homologous chromosome) c. Duplication of part of a chromosome d.Inversion (reversal or “flipping” of part of a chromosome)A change in chromosome structure that does not involve a change in the total amount of genetic material is?a. a deletion. b. a duplication. c. an inversion.d. none of the above.When recombination (“crossing over”) doesn’t happen correctly, what type(s) of mutations that can occur? circle all that apply Select one or more: a. Inversion (reversal or “flipping” of part of a chromosome) b. Duplication of part of a chromosome c. Translocation (transfer of part of a chromosome to a non-homologous chromosome) d. Deletion of part of a chromosome
- A paracentric inversiona. includes the centromere within the inverted region.b. does not include the centromere within the inverted region.c. has two adjacent inverted regions.d. has an inverted region at the very end of a chromosome.Which statement about homologous chromosomes is FALSE? Select one: a. They contain the same genes in the same places along the length of the chromosome b. One member of the homologous pair came from your mother, the other from your father c. For a particular gene, one member of the pair may have one allele, while the other has a different allele d. They are joined together at the centromere as the two halves of the typical X-shaped chromosomePea plants have seven different types of chromosomes. A chromosome with a centromere at the very end is called a. submetacentric. b. acentric. c. acrocentric. d. metacentric. e. telocentric.
- A research scientist is studying diseases associated with homologous chromosomes and notices that the same gene along the chromosome has different function what can you conclude about his findings? A. The homologous pairs have been recombined and therefore he is studying end joining of chromosomes B. He is studying sex chromosomes and the differences are because the chromosomes are from a male species organism C. He has identified different alleles among homologous chromosomes. D. He is studying basic chromosome remodeling during fertilzationThe set of specific alleles on a single chromosome is known as what? a. A phenotype b. Diploidy c. A genetic locus d. A haplotypeDesign an Experiment Imagine that you are a breeder of Labrador retriever dogs. Labs can be black, chocolate brown, or yellow. Suppose that a yellow Lab is donated to you and you need to know its genotype. You have a range of dogs with known genotypes. What cross would you make to determine the genotype of the donated dog? Explain how the resulting puppies show you the Labs genotype.