SBI 3CW - TeacherWeb
... 13. The first stage of mitosis when chromosomes start becoming visible in the microscope is called: a) anaphase b) prophase c) telophase d) metaphase 14. Prior to cell division, each chromosome replicates or duplicates its genetic material. The products are connected by a centromere and are called: ...
... 13. The first stage of mitosis when chromosomes start becoming visible in the microscope is called: a) anaphase b) prophase c) telophase d) metaphase 14. Prior to cell division, each chromosome replicates or duplicates its genetic material. The products are connected by a centromere and are called: ...
Ch. 15
... a). _______________________- occurs when members of similar populations no longer interbreed to produce fertile offspring within their natural environment. 1. Physical barriers can prevent interbreeding – water, mountains, volcanoes, storms… a). _______________________ _______________________ – occ ...
... a). _______________________- occurs when members of similar populations no longer interbreed to produce fertile offspring within their natural environment. 1. Physical barriers can prevent interbreeding – water, mountains, volcanoes, storms… a). _______________________ _______________________ – occ ...
HOMEWORK 06: ANSWER KEY
... when it comes to habitat requirements and what role does human disturbance play in this process? What happens when a new habitat opens up? Give some examples mentioned in the book. “introgressive hybridization”; backcrossing of hybrids with either line of parents; means of mixing genes; second gener ...
... when it comes to habitat requirements and what role does human disturbance play in this process? What happens when a new habitat opens up? Give some examples mentioned in the book. “introgressive hybridization”; backcrossing of hybrids with either line of parents; means of mixing genes; second gener ...
Exam
... ___ 1. Which of the scientists below is most likely to have made the following statement: “Organisms acquire changes in their characteristics during their lifetimes, and then pass these changes on to their offspring”. a. Linnaeus b. Lamarck c. Fisher d. Haldane ___ 2. Ralph Waldo Emerson wrote, “Str ...
... ___ 1. Which of the scientists below is most likely to have made the following statement: “Organisms acquire changes in their characteristics during their lifetimes, and then pass these changes on to their offspring”. a. Linnaeus b. Lamarck c. Fisher d. Haldane ___ 2. Ralph Waldo Emerson wrote, “Str ...
What is Conservation Biology? Ch. 1: An overview
... others similar to it (including other subspecies if present). Also include how to tell this species from similar-appearing members of other genera, families, etc. This is very helpful information, as it can show how someone can tell if they have seen a rare species (or have a particular species on t ...
... others similar to it (including other subspecies if present). Also include how to tell this species from similar-appearing members of other genera, families, etc. This is very helpful information, as it can show how someone can tell if they have seen a rare species (or have a particular species on t ...
Wheat-barley hybrids
... excised and cultured on a sterile growth medium; even then few embryos survive (less than 1 percent). In the early 1970s Anthon Kruse, working in Denmark, discovered a simple embryo rescue technique. He placed the hybrid embryo on immature endosperm excised from the developing seed of one of the par ...
... excised and cultured on a sterile growth medium; even then few embryos survive (less than 1 percent). In the early 1970s Anthon Kruse, working in Denmark, discovered a simple embryo rescue technique. He placed the hybrid embryo on immature endosperm excised from the developing seed of one of the par ...
Study Guide
... □ describe mechanisms of asexual reproduction including binary fission, budding and the production of spores □ describe mechanisms of sexual reproduction (e.g., cross□ fertilization in seed plants, sexual reproduction in mammals) ...
... □ describe mechanisms of asexual reproduction including binary fission, budding and the production of spores □ describe mechanisms of sexual reproduction (e.g., cross□ fertilization in seed plants, sexual reproduction in mammals) ...
BIO EXAM NOTES
... mimicry: an adaptation in which a species resembles another, providing them with a survival advantage selective advantage: a genetic advantage that improves an organism’s chance of survival, usually in a changing environment selective pressure: conditions that select for certain characteristics of i ...
... mimicry: an adaptation in which a species resembles another, providing them with a survival advantage selective advantage: a genetic advantage that improves an organism’s chance of survival, usually in a changing environment selective pressure: conditions that select for certain characteristics of i ...
Slide 1
... Selective Breeding- org. are bred to have specific traits e.g. dogs, livestock, crops Methods: 1. Inbreeding-mating closely related individuals -creates offspring that are homozygous for desired trait ...
... Selective Breeding- org. are bred to have specific traits e.g. dogs, livestock, crops Methods: 1. Inbreeding-mating closely related individuals -creates offspring that are homozygous for desired trait ...
key
... In some groups, asexual reproduction or self-fertilization could also help, but these have never been observed in primates. Finally, if individuals with the new chromosome arrangement could somehow preferentially mate with each other, this would reduce production of heterozygotes and improve the new ...
... In some groups, asexual reproduction or self-fertilization could also help, but these have never been observed in primates. Finally, if individuals with the new chromosome arrangement could somehow preferentially mate with each other, this would reduce production of heterozygotes and improve the new ...
AP biology-Exam Review Unit 1 Evolution
... 10. If two modern organisms are distantly related in an evolutionary sense, then one should expect that A) they should share fewer homologous structures than two more closely related organisms. B) their chromosomes should be very similar. C) they shared a common ancestor relatively recently. D) th ...
... 10. If two modern organisms are distantly related in an evolutionary sense, then one should expect that A) they should share fewer homologous structures than two more closely related organisms. B) their chromosomes should be very similar. C) they shared a common ancestor relatively recently. D) th ...
POPULATION-GENETIC CONSEQUENCES OF THE ECOLOGICAL
... organisms) in investigated genes or chromosomes in analyzed species (cattle and Rodentia species) was observed. We revealed the acute decrease in fertility in first cow generation which was born in Chernobyl (in number of calf per one cow per one year). Observed by us the increase of frequencies of ...
... organisms) in investigated genes or chromosomes in analyzed species (cattle and Rodentia species) was observed. We revealed the acute decrease in fertility in first cow generation which was born in Chernobyl (in number of calf per one cow per one year). Observed by us the increase of frequencies of ...
Study Guide: From Gene to Phenotype 1. Explain the different
... (complete dominance, incomplete dominance, co-dominance, over dominance). 2. Why are co-dominant alleles at a locus more useful for genetic analyses than dominant and recessive alleles? 3. According to the required reading by Schnable and Springer on heterosis, a) What is the meaning of this term an ...
... (complete dominance, incomplete dominance, co-dominance, over dominance). 2. Why are co-dominant alleles at a locus more useful for genetic analyses than dominant and recessive alleles? 3. According to the required reading by Schnable and Springer on heterosis, a) What is the meaning of this term an ...
The Hardy-Weinberg equation can test whether a population is
... without geographic isolation Sympatric speciation occurs when a new species arises within the same geographic area as its parent species. Gene flow between populations may be reduced by – polyploidy, – habitat differentiation ...
... without geographic isolation Sympatric speciation occurs when a new species arises within the same geographic area as its parent species. Gene flow between populations may be reduced by – polyploidy, – habitat differentiation ...
Name: Period: REVIEW FOR FINAL EXAM Topic/Concept What you
... coming from one common ancestor is called ____ (two different terms) 14. How do bacterium becomes “resistant” to an antibiotic? 15. What are analogous structures? ...
... coming from one common ancestor is called ____ (two different terms) 14. How do bacterium becomes “resistant” to an antibiotic? 15. What are analogous structures? ...
ethylene - IQMrevision
... Divergence in the characteristics of an organism from the species or population norm or average ...
... Divergence in the characteristics of an organism from the species or population norm or average ...
Taxonomy Notes TAXONOMY
... Two organisms are members of the same species if they meet all of the following criteria: 1. Successful mating in a 2. Natural environment (which excludes labs, farms, zoos or anything that humans interfere with that is not “natural”). 3. Producing viable (healthy, strong, able to survive to adult s ...
... Two organisms are members of the same species if they meet all of the following criteria: 1. Successful mating in a 2. Natural environment (which excludes labs, farms, zoos or anything that humans interfere with that is not “natural”). 3. Producing viable (healthy, strong, able to survive to adult s ...
Bacterial species
... Phylogenetic approach: sequence data to identify groups that have or not been exchanging genes. ...
... Phylogenetic approach: sequence data to identify groups that have or not been exchanging genes. ...
Chapter 18
... For example, the eastern and western meadowlarks may have similar shapes and coloration, but differences in song prevent interbreeding between the two species. In contrast, humans have considerable diversity, but we all belong to the same species because of our capacity to interbreed. ...
... For example, the eastern and western meadowlarks may have similar shapes and coloration, but differences in song prevent interbreeding between the two species. In contrast, humans have considerable diversity, but we all belong to the same species because of our capacity to interbreed. ...
evolution_notes_copy
... Genetic Drift A change in the population due to chance All populations are subject to some genetic drift; ...
... Genetic Drift A change in the population due to chance All populations are subject to some genetic drift; ...
UNIT 2 CLASSIFICATION READING: Chapter 14 Classification of
... B. History of Taxonomy 1. Aristotle - Greek Philosopher, 350 BC a. Classified living things as either plants or animals. b. Animals classified on where they lived. 1) Land dwellers 2) Water dwellers 3) Air dwellers c. Plants classified on basis of stem differences 1) Herbs 2) Shrubs 3) Trees 2. Aris ...
... B. History of Taxonomy 1. Aristotle - Greek Philosopher, 350 BC a. Classified living things as either plants or animals. b. Animals classified on where they lived. 1) Land dwellers 2) Water dwellers 3) Air dwellers c. Plants classified on basis of stem differences 1) Herbs 2) Shrubs 3) Trees 2. Aris ...
Module 5 Homework Assignment
... 2008). The above passage describes the species concept while the following passage describes the gene flow concept. One way to find out if two populations belong to the same species is to think about gene flow, the movement of genes from one generation to the next as a result of reproduction or from ...
... 2008). The above passage describes the species concept while the following passage describes the gene flow concept. One way to find out if two populations belong to the same species is to think about gene flow, the movement of genes from one generation to the next as a result of reproduction or from ...
5.3 Cell and Inheritance
... Key concept- Chromosomes are made up of many genes joined together like beads on a string. Each gene controls a trait Genes are lined up in the same order on both chromosomes ...
... Key concept- Chromosomes are made up of many genes joined together like beads on a string. Each gene controls a trait Genes are lined up in the same order on both chromosomes ...
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.↑ ↑ ↑ ↑