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by: Ignatius Ortiz

LifeScience BIO110

Ignatius Ortiz
CSU Pomona
GPA 3.98


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Class Notes
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This 2 page Class Notes was uploaded by Ignatius Ortiz on Saturday October 3, 2015. The Class Notes belongs to BIO110 at California State Polytechnic University taught by JamesClark in Fall. Since its upload, it has received 30 views. For similar materials see /class/218288/bio110-california-state-polytechnic-university in Biology at California State Polytechnic University.

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Date Created: 10/03/15
BIO 110 Winter 2012 Midterm 2 Study guide 1 Cell division mitosis in multicellular organisms most often results in N A unicellular chytrid divides by mitosis to form two new cells This is an example of reproduction 3 Which of these statements about a gene is not true 4 Ribosomes are made primarily of and function to 5 A DNA repair enzyme just replaced a mangled adenine with an intact one Where did it get the information to insert an adenine rather than one of the other three bases 6 A codon or quotwordquot in a DNA sequence consists of nucleotide bases a 7 The four letters of the DNA alphabet are 8 are containers for DNA every haploidldiploid cell has two copies of each one 9 Mutation is 10 A quotsilent substitution is 11 An addition or deletion mutation often has a greater effect than a substitution because 12 Which of the following is not true of herpesviruses 13 Sexual reproduction involves two specific events and 14 The antidote to mutation is 15 An organism with cells having one set of chromosomes is called and one with two sets of chromosomes is 16 The cells in the center of a meristem in a flowering plant reduce the chances of mutation by 17 The quotgerm line refers to 18 A pollen grain is 19 In birds and horses the gametes eggs and sperm are the only cells 20 The sex of a male mammal is determined by sex chromosomes its configuration is usually expressed as 21 An unfertilized egg produced by a queen honeybee 22 Panmixia is 23 An example that approaches theoretical panmixia might be 24 Natural selection is 25 In sicklecell disease heterozygous individuals are present in populations at a higheerower frequency than might be expected because they are 26 An important part of speciation the formation of new species is 27 Barriers to hybridization between species that happen beforeZafter fertilization are more advantageous to the females of both species because 28 The antidote to sex is 29 We cross two pea plants each of which produce yellow peas Of their 100 offpsring 75 have yellow peas and 25 have green peas It is most likely that the parents are 30 Peas can be green or yellow We know this trait is controlled by a single gene If we mate a pea plant with green peas to one with yellow peas all the offspring will have yellow peas We can thus hypothesize that the allele for yellow peas is 31 Genetic drift refers to 32 Which of the following is not necessary for the allele frequencies of a genetic population to remain constant over time 33 Which of the following is not true of the members of a genetic population 34 Patterns of descent in sexually reproducing individuals most often take the form of bUJUJUJUJUJ OEDOONOHU39I bb NH U39Ibbbbbbb OEDOONO XU39IbUJ A genealogy of species is called a llEvery organism contains within it traces of its entire evolutionary history means that What is homoplasy What is homology The principle of parsimony states that Mammals crocodilians and birds all have fourchambered hearts We hypothesize that mammal hearts evolved independently from those of crocodilians and birds that is the similarity is homoplasy Why A homology shared by mammals and birds but not by amphibians is Mojave green rattlesnakes and kangaroo rats are both tetrapods We can most confidently say that Flowers and fruits are the diagnostic unique homologies of which clade The homology that marks vertebrates as a clade is the The way that we know animals in the strict sense comprise a clade is that they all have We know that insects constitute a clade because they share the homology of Which of the following is not evidence for homoeothermy in nonbird dinosaurs It is thought that some extinct dinosaurs produced vocalizations because The best explanation for why zebras have stripes Which feature is not shared by crocodilians and birds


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