EBK AN ILLUSTRATED GUIDE TO VETERINARY
4th Edition
ISBN: 8220100488115
Author: ROMICH
Publisher: YUZU
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- In genetics, F stands for filial, which means ________. a. friendly c. final b. offspring d. hairlikearrow_forwardUse the following information to respond to the three questions posed below: (1) The proband (affected individual who led to the construction of the pedigree) exhibits the trait. (2) Neither her husband nor her only sibling, an older brother, exhibits the trait. (3) The proband has five children by her current husband. The oldest is a boy, followed by a girl, then another boy, and then identical twin girls. Only the second oldest fails to exhibit the trait. (4) Both parents of the proband show the trait. a. Construct a pedigree of the trait in this family. b. Determine how the trait is inherited (go step by step to examine each possible pattern of inheritance). c. Can you deduce the genotype of the probands husband for this trait?arrow_forwardThe observable traits expressed by an organism are described as its _______. a. phenotype b. genotype c. alleles d. zygotearrow_forward
- Interspecific hybrids, if they survive, are (a) always sterile (b) always fertile (c) usually sterile (d) usually fertile (e) never sterilearrow_forwardA characteristic that exhibits smooth changes in populations distributed along a geographical gradient is called a: a. ring species. b. hybrid. c. cline. d. hybrid breakdown. e. subspecies.arrow_forwardA recessive trait will be observed in individuals that are ________ for that trait. a. heterozygous b. homozygous or heterozygous c. homozygous d. diploidarrow_forward
- Which of the following represents an example of qualitative phenotypic variation? a. the lengths of peoples toes b. the body sizes of pigeons c. human ABO blood types d. the birth weights of humans e. the number of leaves on oak treesarrow_forwardPopulation genetics is the study of ________. a. how allele frequencies in a population change over time b. populations of cells in an individual c. the rate of population growth d. how genes affect embryological developmentarrow_forwardSimilarities in ___________ are the basis of similarities in traits. a. karyotype c. the double helix b. DNA sequence d. chromosome numberarrow_forward
- The phenomenon in which chance events cause unpredictable changes in allele frequencies is called: a. gene flow. b. genetic drift. c. inbreeding. d. balanced polymorphism. e. stabilizing selection.arrow_forwardThe reason spontaneous mutations do not have an immediate effect on allele frequencies in a large population is that: a. mutations are random events, and mutations may be eitherbeneficial or harmful. b. mutations usually occur in males and have little effect oneggs. c. many mutations exert their effects after an organism hasstopped reproducing. d. mutations are so rare that mutated alleles are greatlyoutnumbered by nonmutated alleles. e. most mutations do not change the amino acid sequence of aprotein.arrow_forwardA population of mice is at HardyWeinberg equilibrium at a gene locus that controls fur color. The locus has two alleles, M and m. A genetic analysis of one population reveals that 60% of its gametes carry the M allele. What percentage of mice contains both the M and m alleles? a. 60% b. 48% c. 40% d. 36% e. 16%arrow_forward
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