Heredity notes
... * One letter (you get one allele from mom OR one allele from dad) * There are two types of alleles dominant (D) recessive (d) ...
... * One letter (you get one allele from mom OR one allele from dad) * There are two types of alleles dominant (D) recessive (d) ...
PoL2e Ch17 Lecture-Speciation
... Concept 17.4 Reproductive Isolation Is Reinforced When Diverging Species Come into Contact ...
... Concept 17.4 Reproductive Isolation Is Reinforced When Diverging Species Come into Contact ...
Speciation - Integrative Biology
... One of the most visible manifestations of evolution is the existence of groups of closely related species that often have evolved relatively recently from a common ancestor. Also called species flocks. Examples are: Darwin’s finches: Fourteen species of finches occur on the Galapagos Islands; actual ...
... One of the most visible manifestations of evolution is the existence of groups of closely related species that often have evolved relatively recently from a common ancestor. Also called species flocks. Examples are: Darwin’s finches: Fourteen species of finches occur on the Galapagos Islands; actual ...
Available
... combine to form a zygote with n pairs of chromosomes, one from each gamete, i.e. 2n chromosomes in total. The chromosomes in each pair, one of which comes from the sperm and one from the egg, are said to be homologous. Cells and organisms with pairs of homologous chromosomes are called diploid. Fo ...
... combine to form a zygote with n pairs of chromosomes, one from each gamete, i.e. 2n chromosomes in total. The chromosomes in each pair, one of which comes from the sperm and one from the egg, are said to be homologous. Cells and organisms with pairs of homologous chromosomes are called diploid. Fo ...
Directed Reading 11.2 - Blair Community Schools
... to opposite poles of the cell. _____________________ 7. The homologous chromosomes separate. The chromosomes of each pair are pulled to opposite poles of the cell by the spindle fibers. The chromatids do not separate at their centromeres. _____________________ 8. The chromosomes condense, and the nu ...
... to opposite poles of the cell. _____________________ 7. The homologous chromosomes separate. The chromosomes of each pair are pulled to opposite poles of the cell by the spindle fibers. The chromatids do not separate at their centromeres. _____________________ 8. The chromosomes condense, and the nu ...
Chapter 11 - Reserve & resource management
... reserve types (biosphere reserves) areas are set aside for limited take) Central to the idea of harvesting is the concept of sustainable yield This is any level of harvest that can be taken from the population indefinitely without detriment to the population From a commercial point of view, the best ...
... reserve types (biosphere reserves) areas are set aside for limited take) Central to the idea of harvesting is the concept of sustainable yield This is any level of harvest that can be taken from the population indefinitely without detriment to the population From a commercial point of view, the best ...
Genetics Gregor Mendel
... …there were plants with different flower colors, seed color, flower position etc.. ...
... …there were plants with different flower colors, seed color, flower position etc.. ...
Chapter 6 test review sheet
... Traits and Probability 6.5 16. What do the letters inside the Punnett square represent? 17. What does a monohybrid cross determine? 18. What is a testcross? 19. What do dihybrid crosses examine? 20. What does the law of independent assortment state? Meiosis and Genetic Variation 6.6 21. How many dif ...
... Traits and Probability 6.5 16. What do the letters inside the Punnett square represent? 17. What does a monohybrid cross determine? 18. What is a testcross? 19. What do dihybrid crosses examine? 20. What does the law of independent assortment state? Meiosis and Genetic Variation 6.6 21. How many dif ...
• Summary of topics • Species concepts
... Darwin’s finches: Fourteen species of finches occur on the Galapagos Islands; actually one of the species lives only on Cocos Island ~1000 km north (Fig. 1.23 (7th) (Fig. 1.17b 6th)). This group of birds provides one of the most striking and best-studied examples of evolution on the islands. The des ...
... Darwin’s finches: Fourteen species of finches occur on the Galapagos Islands; actually one of the species lives only on Cocos Island ~1000 km north (Fig. 1.23 (7th) (Fig. 1.17b 6th)). This group of birds provides one of the most striking and best-studied examples of evolution on the islands. The des ...
Types of Inheritance patterns... Two categories of traits : Any trait
... Autosomal Dominant... If you inherit it, you show it. A classic Mendelian dominant allele. ( TT and Tt both show it, tt doesn’t....ex. Stubby fingers)...if one parent shows it, half the kids show it. Very common in a normal population. Sometimes these genes mutate by sheer fluke, and the very rare c ...
... Autosomal Dominant... If you inherit it, you show it. A classic Mendelian dominant allele. ( TT and Tt both show it, tt doesn’t....ex. Stubby fingers)...if one parent shows it, half the kids show it. Very common in a normal population. Sometimes these genes mutate by sheer fluke, and the very rare c ...
RW - My CCSD
... The 23rd pair of chromosomes are XX for a female and XY for a male. Mom can only pass on her X chromosome, but dad can pass X or Y. Dad determines if offspring is male or female. Dads give their Y to sons, Moms always give their X to their sons Sex linked traits-traits on this pair of chromo ...
... The 23rd pair of chromosomes are XX for a female and XY for a male. Mom can only pass on her X chromosome, but dad can pass X or Y. Dad determines if offspring is male or female. Dads give their Y to sons, Moms always give their X to their sons Sex linked traits-traits on this pair of chromo ...
I. Genetics*the study of heredity
... alleles for each trait. Do the MATH! 2 parents X 2 alleles=4 possible combinations of alleles ...
... alleles for each trait. Do the MATH! 2 parents X 2 alleles=4 possible combinations of alleles ...
Lecture PPT - Carol Lee Lab
... Adaptation to alternative hosts leads to reproductive isolation (through the genetic mechanisms discussed earlier, such as Dobzhansky-Müller model) ...
... Adaptation to alternative hosts leads to reproductive isolation (through the genetic mechanisms discussed earlier, such as Dobzhansky-Müller model) ...
1-Pager Directions
... Gregor Mendel – an Austrian monk, scientist, and gardener – was a keen observer of the world around him. Curious about heredity (how traits passed from one generation to the next), he grew and tested almost 30,000 pea plants. During the 1850’s, Mendel studied genetics by doing controlled breeding ex ...
... Gregor Mendel – an Austrian monk, scientist, and gardener – was a keen observer of the world around him. Curious about heredity (how traits passed from one generation to the next), he grew and tested almost 30,000 pea plants. During the 1850’s, Mendel studied genetics by doing controlled breeding ex ...
Diversity
... Although they share 75% of their DNA, only 25% of their genes are identical The rest have at least 1 base difference While this amount of difference is small, it can mean the difference between healthy individuals and those with sickle-cell anemia or cystic fibrosis ...
... Although they share 75% of their DNA, only 25% of their genes are identical The rest have at least 1 base difference While this amount of difference is small, it can mean the difference between healthy individuals and those with sickle-cell anemia or cystic fibrosis ...
Rainforest refugia and hotspots of plant genetic diversity
... among living organisms from all sources including, inter alia, terrestrial, marine and other aqua:c ecosystems and the ecological complexes of which they are part; ...
... among living organisms from all sources including, inter alia, terrestrial, marine and other aqua:c ecosystems and the ecological complexes of which they are part; ...
38plantreprod
... tryptophan and lysine, two essential amino acids, but these traits were closely associated with several undesirable ones. – It took nearly 20 years for plant breeders, using conventional breeding methods of hybridization and natural selection, to create maize varieties that had higher nutritional va ...
... tryptophan and lysine, two essential amino acids, but these traits were closely associated with several undesirable ones. – It took nearly 20 years for plant breeders, using conventional breeding methods of hybridization and natural selection, to create maize varieties that had higher nutritional va ...
Mechanisms of Evolution: Natural Selection
... definitions and processes of evolution, but remember, genetic change on a population scale is MUCH, MUCH, MUCH more complex than these models can show. ...
... definitions and processes of evolution, but remember, genetic change on a population scale is MUCH, MUCH, MUCH more complex than these models can show. ...
Chapter 11
... Thomas H. Morgan is credited with the discovery of the principle of A. segregation. B. independent assortment. C. gene linkage. D. dominance. ...
... Thomas H. Morgan is credited with the discovery of the principle of A. segregation. B. independent assortment. C. gene linkage. D. dominance. ...
Adaptive evolution in invasive species
... growth rates than source populations, and a cline in flowering time has developed among locations, indicating adaptation to local environmental conditions in less than 50 years. It is not known, however, whether adaptation would have been quicker had there been no bottleneck. Hybridization Hybridiza ...
... growth rates than source populations, and a cline in flowering time has developed among locations, indicating adaptation to local environmental conditions in less than 50 years. It is not known, however, whether adaptation would have been quicker had there been no bottleneck. Hybridization Hybridiza ...
Adaptive evolution in invasive species
... growth rates than source populations, and a cline in flowering time has developed among locations, indicating adaptation to local environmental conditions in less than 50 years. It is not known, however, whether adaptation would have been quicker had there been no bottleneck. Hybridization Hybridiza ...
... growth rates than source populations, and a cline in flowering time has developed among locations, indicating adaptation to local environmental conditions in less than 50 years. It is not known, however, whether adaptation would have been quicker had there been no bottleneck. Hybridization Hybridiza ...
Inheritance - PGS Science
... A sample of seeds were exposed to radiation. Some seeds then had more than the normal number of chromosomes and grew into plants which gave higher yields. Example 2 A new variety of tomato is produced by crossing suitable parent plants. The new variety has tomatoes that are yellow in colour and much ...
... A sample of seeds were exposed to radiation. Some seeds then had more than the normal number of chromosomes and grew into plants which gave higher yields. Example 2 A new variety of tomato is produced by crossing suitable parent plants. The new variety has tomatoes that are yellow in colour and much ...
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.↑ ↑ ↑ ↑