Evolution Concept List 2 1. Use each of the following terms in a
... 20. Use the following terms to create a concept map of how new species can form: natural selection, allele frequency, geographic isolation, reproductive isolation, and speciation. ...
... 20. Use the following terms to create a concept map of how new species can form: natural selection, allele frequency, geographic isolation, reproductive isolation, and speciation. ...
Topic 5: Evolution and biodiversity (12 hours)
... Looking for trends and discrepancies—patterns of chromosome number in some genera can be explained by speciation due to polyploidy (3.1) Understandings: Theory of knowledge: • A gene pool consists of all the genes and their different • Punctuated equilibrium was long considered an alleles, present i ...
... Looking for trends and discrepancies—patterns of chromosome number in some genera can be explained by speciation due to polyploidy (3.1) Understandings: Theory of knowledge: • A gene pool consists of all the genes and their different • Punctuated equilibrium was long considered an alleles, present i ...
Topic 5: Evolution and biodiversity (12 hours)
... 10.3.NOS1 Looking for trends and discrepancies—patterns of chromosome number in some genera can be explained by speciation due to polyploidy (3.1) Understandings: Theory of knowledge: 10.3.U1 A gene pool consists of all the genes and their • Punctuated equilibrium was long considered an different al ...
... 10.3.NOS1 Looking for trends and discrepancies—patterns of chromosome number in some genera can be explained by speciation due to polyploidy (3.1) Understandings: Theory of knowledge: 10.3.U1 A gene pool consists of all the genes and their • Punctuated equilibrium was long considered an different al ...
Evolution notes lecture Genetic Variation and Gene Regulation Fall
... translation into proteins Introns are non-coding regions, often called “nonsense” DNA, but may be involved in gene regulation, speciation, and evolution. ...
... translation into proteins Introns are non-coding regions, often called “nonsense” DNA, but may be involved in gene regulation, speciation, and evolution. ...
Natural Selection By Cindy Grigg 1 In 1831, Darwin was the ship`s
... In 1977, a study of Galapagos finches showed that traits could change very quickly by natural selection. Only two- and-one-half centimeters of rain fell that year, much less than the yearly average of about thirteen centimeters. Many plants died because of the drought. Fewer plant seeds were availab ...
... In 1977, a study of Galapagos finches showed that traits could change very quickly by natural selection. Only two- and-one-half centimeters of rain fell that year, much less than the yearly average of about thirteen centimeters. Many plants died because of the drought. Fewer plant seeds were availab ...
Low fertility of wild hybrid male flycatchers despite recent divergence
... genetic incompatibilities eventually lead to hybrid sterility or inviability. Extrinsic factors affecting hybrid fitness have been studied in the wild [1], while hybrid sterility and inviability have traditionally been studied in artificial crosses, most recently in model organisms, focused on the g ...
... genetic incompatibilities eventually lead to hybrid sterility or inviability. Extrinsic factors affecting hybrid fitness have been studied in the wild [1], while hybrid sterility and inviability have traditionally been studied in artificial crosses, most recently in model organisms, focused on the g ...
Low fertility of wild hybrid male flycatchers despite recent divergence
... genetic incompatibilities eventually lead to hybrid sterility or inviability. Extrinsic factors affecting hybrid fitness have been studied in the wild [1], while hybrid sterility and inviability have traditionally been studied in artificial crosses, most recently in model organisms, focused on the g ...
... genetic incompatibilities eventually lead to hybrid sterility or inviability. Extrinsic factors affecting hybrid fitness have been studied in the wild [1], while hybrid sterility and inviability have traditionally been studied in artificial crosses, most recently in model organisms, focused on the g ...
population
... geographic isolation (some physical barrier that separates populations) Allopatric means “different homelands” Once one species is separated into two (or more), gene flow between them stops As each experiences different ...
... geographic isolation (some physical barrier that separates populations) Allopatric means “different homelands” Once one species is separated into two (or more), gene flow between them stops As each experiences different ...
HOMOLOGY CONDIDERED Bones in the forelimbs in mammals
... 1. For each pair of contemporary sequences below, are they orthologous, inparalogous, out-parologous or xenologous? • G1 and G2 in species A: ________________ • The G2a and G2a' in species A: ________________ • G1a and G1b: ________________ • The 7 copies of rrs in E. coli?: ________________ 2. Whic ...
... 1. For each pair of contemporary sequences below, are they orthologous, inparalogous, out-parologous or xenologous? • G1 and G2 in species A: ________________ • The G2a and G2a' in species A: ________________ • G1a and G1b: ________________ • The 7 copies of rrs in E. coli?: ________________ 2. Whic ...
17_lecture_ppt mader - mhs
... • A polyploid plant can reproduce with itself, but cannot reproduce with the 2n population because not all the chromosomes would be able to pair during meiosis. • Two types of polyploidy are known: – Autoploidy - diploid plant produces diploid gametes due to nondisjunction during meiosis. » If diplo ...
... • A polyploid plant can reproduce with itself, but cannot reproduce with the 2n population because not all the chromosomes would be able to pair during meiosis. • Two types of polyploidy are known: – Autoploidy - diploid plant produces diploid gametes due to nondisjunction during meiosis. » If diplo ...
Chapter 24: Macroevolution
... A. speciation (the evolution of new species) has two general forms, anagenic and cladogenic B. anagenic speciation is the gradual change of one species into a new form, with the “new” species form replacing the “old” form; this is essentially microevolution on the whole species level – the number of ...
... A. speciation (the evolution of new species) has two general forms, anagenic and cladogenic B. anagenic speciation is the gradual change of one species into a new form, with the “new” species form replacing the “old” form; this is essentially microevolution on the whole species level – the number of ...
Recombination is the principal source of variation in asexually
... 75. An example of complementary base pairing in the DNA double helix is a) A with T. b) T with C. c) 3’ hydroxyl with 5’ phosphate. d) free basing. 76. A chromosome consists of a single DNA molecule complexed with proteins. a) T b) F 77. If an organism is 2n = 2x = 20 and the haploid genome size is ...
... 75. An example of complementary base pairing in the DNA double helix is a) A with T. b) T with C. c) 3’ hydroxyl with 5’ phosphate. d) free basing. 76. A chromosome consists of a single DNA molecule complexed with proteins. a) T b) F 77. If an organism is 2n = 2x = 20 and the haploid genome size is ...
Mitosis
... 17. Most plants appear green because chlorophyll does not absorb _______________ light. 18. What gas is produced as a by-product of photosynthesis? __________________. 19. Describe the light-dependent and light-independent reactions and know where they occur. The light dependent reaction uses ______ ...
... 17. Most plants appear green because chlorophyll does not absorb _______________ light. 18. What gas is produced as a by-product of photosynthesis? __________________. 19. Describe the light-dependent and light-independent reactions and know where they occur. The light dependent reaction uses ______ ...
Mitosis
... 17. Most plants appear green because chlorophyll does not absorb _______________ light. 18. What gas is produced as a by-product of photosynthesis? __________________. 19. Describe the light-dependent and light-independent reactions and know where they occur. The light dependent reaction uses ______ ...
... 17. Most plants appear green because chlorophyll does not absorb _______________ light. 18. What gas is produced as a by-product of photosynthesis? __________________. 19. Describe the light-dependent and light-independent reactions and know where they occur. The light dependent reaction uses ______ ...
Chapter 11 Intro to Genetics
... -pollen contains male reproductive cells or sperm -flower contains female reproductive cells or eggs ...
... -pollen contains male reproductive cells or sperm -flower contains female reproductive cells or eggs ...
MTaxonom_1
... Here we will be most concerned with Genus species, and strains Homo genus, e.g., Species sapiens (Humans) Escherichia coli O157:H7 ...
... Here we will be most concerned with Genus species, and strains Homo genus, e.g., Species sapiens (Humans) Escherichia coli O157:H7 ...
Introduction to Ecology and Evolutionary Biology
... ‘Nothing in biology makes sense except in the light of evolution’ Dobzhansky, 1973 ...
... ‘Nothing in biology makes sense except in the light of evolution’ Dobzhansky, 1973 ...
Evolution
... Hardy-Weinberg Equilibrium • Frequency of alleles in a stable population will not change over time – Very large population – Population is isolated – Mutations don’t alter gene pool – Random mating – All individuals are equal in reproductive success ...
... Hardy-Weinberg Equilibrium • Frequency of alleles in a stable population will not change over time – Very large population – Population is isolated – Mutations don’t alter gene pool – Random mating – All individuals are equal in reproductive success ...
Genetic, morphological, and chemical patterns of plant hybridization
... known as a phenomenon that could yield sterile plants with intermediate phenotypes. However, it was Kölreuter who began with the systematic study of plant hybridization. This author performed crosses between Nicotiana paniculata and N. rustica (Kölreuter 1761). As a result from these crosses, he mad ...
... known as a phenomenon that could yield sterile plants with intermediate phenotypes. However, it was Kölreuter who began with the systematic study of plant hybridization. This author performed crosses between Nicotiana paniculata and N. rustica (Kölreuter 1761). As a result from these crosses, he mad ...
CHAPTER - 9 HERIDITY AND EVOLU
... body weight also decreases. If after a few years the availability of food increases then the body weight of the beetles also increases. This acquired trait cannot be passed from one generation to the next because there is no change in their genetic composition. ...
... body weight also decreases. If after a few years the availability of food increases then the body weight of the beetles also increases. This acquired trait cannot be passed from one generation to the next because there is no change in their genetic composition. ...
chapter - 9 heridity and evolu
... body weight also decreases. If after a few years the availability of food increases then the body weight of the beetles also increases. This acquired trait cannot be passed from one generation to the next because there is no change in their genetic composition. ...
... body weight also decreases. If after a few years the availability of food increases then the body weight of the beetles also increases. This acquired trait cannot be passed from one generation to the next because there is no change in their genetic composition. ...
Heredidity and Evolution
... body weight also decreases. If after a few years the availability of food increases then the body weight of the beetles also increases. This acquired trait cannot be passed from one generation to the next because there is no change in their genetic composition. ...
... body weight also decreases. If after a few years the availability of food increases then the body weight of the beetles also increases. This acquired trait cannot be passed from one generation to the next because there is no change in their genetic composition. ...
APES_Chapter_4_Evolu..
... 1. Populations – not individuals – evolve by becoming genetically different. 2. The key is to develop genetic variability. a. Occurs by mutations – random changes in nucleotide sequence or number of chromosomes. i. Can occur because of mutanogens. ii. Or true random mistakes during replication b. On ...
... 1. Populations – not individuals – evolve by becoming genetically different. 2. The key is to develop genetic variability. a. Occurs by mutations – random changes in nucleotide sequence or number of chromosomes. i. Can occur because of mutanogens. ii. Or true random mistakes during replication b. On ...
Chapter 17 Review ppt
... change in the population’s gene pool is known as the bottleneck effect ...
... change in the population’s gene pool is known as the bottleneck effect ...
Presentation
... from parents to offspring • traits = characteristics that are inherited • Genetics = branch of biology that studies heredity ...
... from parents to offspring • traits = characteristics that are inherited • Genetics = branch of biology that studies heredity ...
Hybrid (biology)
In biology a hybrid, also known as cross breed, is the result of mixing, through sexual reproduction, two animals or plants of different breeds, varieties, species or genera. Using genetic terminology, it may be defined as follows. Hybrid generally refers to any offspring resulting from the breeding of two genetically distinct individuals, which usually will result in a high degree of heterozygosity, though hybrid and heterozygous are not, strictly speaking, synonymous. a genetic hybrid carries two different alleles of the same gene a structural hybrid results from the fusion of gametes that have differing structure in at least one chromosome, as a result of structural abnormalities a numerical hybrid results from the fusion of gametes having different haploid numbers of chromosomes a permanent hybrid is a situation where only the heterozygous genotype occurs, because all homozygous combinations are lethal.From a taxonomic perspective, hybrid refers to: Offspring resulting from the interbreeding between two animal species or plant species. See also hybrid speciation. Hybrids between different subspecies within a species (such as between the Bengal tiger and Siberian tiger) are known as intra-specific hybrids. Hybrids between different species within the same genus (such as between lions and tigers) are sometimes known as interspecific hybrids or crosses. Hybrids between different genera (such as between sheep and goats) are known as intergeneric hybrids. Extremely rare interfamilial hybrids have been known to occur (such as the guineafowl hybrids). No interordinal (between different orders) animal hybrids are known. The third type of hybrid consists of crosses between populations, breeds or cultivars within a single species. This meaning is often used in plant and animal breeding, where hybrids are commonly produced and selected, because they have desirable characteristics not found or inconsistently present in the parent individuals or populations.↑ ↑ ↑ ↑