Genetics notes 12 13
... inherited. These are known as genotypes. Genotypes are either homozygous (both alleles are identical; AA or aa) or it is heterozygous (alleles are different; Aa). Genotypes are expressed as phenotypes. These are the observable ...
... inherited. These are known as genotypes. Genotypes are either homozygous (both alleles are identical; AA or aa) or it is heterozygous (alleles are different; Aa). Genotypes are expressed as phenotypes. These are the observable ...
Genetic Principles
... • Pea plants are easy to study because their traits come in two forms (unlike human hair color). • They also produce lots of offspring per generation, so he could get lots of data. • They usually self-pollinate, but Mendel cross-pollinated them to chose the parents of a generation. ...
... • Pea plants are easy to study because their traits come in two forms (unlike human hair color). • They also produce lots of offspring per generation, so he could get lots of data. • They usually self-pollinate, but Mendel cross-pollinated them to chose the parents of a generation. ...
Genetics
... environments. Greater variation within the species makes a population better suited to adaptation to changes in the environment. ...
... environments. Greater variation within the species makes a population better suited to adaptation to changes in the environment. ...
Genetics and Heredity
... To test the particulate hypothesis, Mendel crossed truebreeding plants that had two distinct and contrasting traits—for example, purple or white flowers. What is meant by “true breeding?” ...
... To test the particulate hypothesis, Mendel crossed truebreeding plants that had two distinct and contrasting traits—for example, purple or white flowers. What is meant by “true breeding?” ...
Meiosis power point
... MEIOSIS Modified with permission from Robert Goodman, Biology Department,Citrus Community College ...
... MEIOSIS Modified with permission from Robert Goodman, Biology Department,Citrus Community College ...
Chapter 11 Notes Section 1 Gregor Mendel`s Peas Genetics is the
... Genes that segregate independently do not influence each other's inheritance. Mendel's experimental results were very close to the 9 : 3 : 3 : 1 ratio predicted by the Punnett square. Mendel had discovered the principle of independent assortment. ...
... Genes that segregate independently do not influence each other's inheritance. Mendel's experimental results were very close to the 9 : 3 : 3 : 1 ratio predicted by the Punnett square. Mendel had discovered the principle of independent assortment. ...
Hybrid breakdown between two haplodiploid species: The role of
... (Breeuwer and Werren 1990; Breeuwer et al. 1992) or indirectly by altering sex ratio (Hurst 1993a; Stouthamer et al. 1990). Cytoplasmic incompatibility bacteria are widespread in insects and could play an important role in rapid speciation (Breeuwer and Werren 1990; Coyne 1992; O'Neill et al. 1 992) ...
... (Breeuwer and Werren 1990; Breeuwer et al. 1992) or indirectly by altering sex ratio (Hurst 1993a; Stouthamer et al. 1990). Cytoplasmic incompatibility bacteria are widespread in insects and could play an important role in rapid speciation (Breeuwer and Werren 1990; Coyne 1992; O'Neill et al. 1 992) ...
Chromosome Rearrangements Concepts: Chromosome
... Note: If both homologues are equivalent (ie. homozygous inversion), then no inversion loop is formed and both chromosomes pair. No abnormal products are formed by crossover events. The only consequence is a linkage map that has an inverted gene order. ...
... Note: If both homologues are equivalent (ie. homozygous inversion), then no inversion loop is formed and both chromosomes pair. No abnormal products are formed by crossover events. The only consequence is a linkage map that has an inverted gene order. ...
Lecture 15
... effective at separating molecules of 10-1000 nucleotides in length (1000 nucleotides is termed 1 kilobase or 1 kb), with very high resolution. The larger pores in agarose allows it to resolve much bigger molecules, up to 100 kb in length. In pulsed-field gel electrophoresis (PFGE) the electrical fie ...
... effective at separating molecules of 10-1000 nucleotides in length (1000 nucleotides is termed 1 kilobase or 1 kb), with very high resolution. The larger pores in agarose allows it to resolve much bigger molecules, up to 100 kb in length. In pulsed-field gel electrophoresis (PFGE) the electrical fie ...
Lesson 2
... Which enables a species to blend in with its environment? A. behavioral adaptation B. camouflage C. natural selection ...
... Which enables a species to blend in with its environment? A. behavioral adaptation B. camouflage C. natural selection ...
Prophase II.
... offspring having a combination of DNA from both parents. This will help add to: (l) the variation within a population or a species. (2)this also creates unique individuals, which are not identical to the parents. Each species has a different number of chromosomes. For example, humans have 46 chromos ...
... offspring having a combination of DNA from both parents. This will help add to: (l) the variation within a population or a species. (2)this also creates unique individuals, which are not identical to the parents. Each species has a different number of chromosomes. For example, humans have 46 chromos ...
Genetics - NorthTeam1
... Cell division for reproduction Forms sperm and egg Chromosome numbers half. (Haploid) Mitosis occurs Then the two cells split again splitting chromosome pairs. 1 cell to 2 cells to 4 repro. cells. ...
... Cell division for reproduction Forms sperm and egg Chromosome numbers half. (Haploid) Mitosis occurs Then the two cells split again splitting chromosome pairs. 1 cell to 2 cells to 4 repro. cells. ...
Section 10.2 Summary – pages 263-273
... Diploid and haploid cells • In the body cells of animals and most plants, chromosomes occur in pairs. • A cell with two of each kind of chromosome is called a diploid cell and is said to contain a diploid, or 2n, number of chromosomes. ...
... Diploid and haploid cells • In the body cells of animals and most plants, chromosomes occur in pairs. • A cell with two of each kind of chromosome is called a diploid cell and is said to contain a diploid, or 2n, number of chromosomes. ...
STUDENT`S ASSIGNMENT Give it to your laboratory instructor
... expected genotypes in the offspring of two parents. _____ 4. In a cross between two homozygous dominant individuals, 25% of the offspring may have the recessive phenotype. _____ 5. A parent cell makes gametes through the process of mitosis. _____ 6. It is entirely likely for a gene to have more than ...
... expected genotypes in the offspring of two parents. _____ 4. In a cross between two homozygous dominant individuals, 25% of the offspring may have the recessive phenotype. _____ 5. A parent cell makes gametes through the process of mitosis. _____ 6. It is entirely likely for a gene to have more than ...
Feb 15 - 16: DR Chapter 5 Genetics
... d. one kind of organism. 6. Both male and female reproductive structures are found in ______________________plants. 7. The offspring of ______________________plants all have the same traits as the parent. 8. Because pea plants can ______________________one plant is able to fertilize another. 9. List ...
... d. one kind of organism. 6. Both male and female reproductive structures are found in ______________________plants. 7. The offspring of ______________________plants all have the same traits as the parent. 8. Because pea plants can ______________________one plant is able to fertilize another. 9. List ...
meiosis - Citrus College
... • Homologous chromosomes separate and move towards the poles. • Sister chromatids remain attached at their ...
... • Homologous chromosomes separate and move towards the poles. • Sister chromatids remain attached at their ...
Name
... (5) Define and distinguish between acrocentric and metacentric chromosomes. acrocentric chromosomes have centromeres near 1 end metacentric chromosomes have its centromere near the center (5) Define and distinguish between leptotene and zygotene. leptotene is the stage of meiosis where chromatin sta ...
... (5) Define and distinguish between acrocentric and metacentric chromosomes. acrocentric chromosomes have centromeres near 1 end metacentric chromosomes have its centromere near the center (5) Define and distinguish between leptotene and zygotene. leptotene is the stage of meiosis where chromatin sta ...
Constructing a Punnett square
... 1st parent: TT Tall Phenotype?_________ 2nd parent: tt Short Phenotype?_________ Tt Offspring: ____ All Tall Phenotype?_______ ...
... 1st parent: TT Tall Phenotype?_________ 2nd parent: tt Short Phenotype?_________ Tt Offspring: ____ All Tall Phenotype?_______ ...
Mendelian Genetics Student Objectives
... passage (transmission) of genes from parent to offspring. a. Rules of probability can be applied to analyze passage of single gene traits from parent to offspring. b. Segregation and independent assortment of chromosomes result in genetic variation. Evidence of student learning is a demonstrated und ...
... passage (transmission) of genes from parent to offspring. a. Rules of probability can be applied to analyze passage of single gene traits from parent to offspring. b. Segregation and independent assortment of chromosomes result in genetic variation. Evidence of student learning is a demonstrated und ...
File - NCEA Level 2 Biology
... number. A whole chromosome, or whole set of chromosomes are added or lost.Will have dire ...
... number. A whole chromosome, or whole set of chromosomes are added or lost.Will have dire ...
"Hybrid Incompatibility in Drosophila: An Updated Genetic and
... 1998). Then, it was concluded that Ods may contribute to hybrid sterility but not in isolation, requiring the cooperation of other genes. The same conclusion has been reached whenever the individual effect of any putative major ‘speciation’ gene has been tested using gene manipulations (Tang and Pre ...
... 1998). Then, it was concluded that Ods may contribute to hybrid sterility but not in isolation, requiring the cooperation of other genes. The same conclusion has been reached whenever the individual effect of any putative major ‘speciation’ gene has been tested using gene manipulations (Tang and Pre ...
chapter13_Sections 4-6
... • Thus, gene pairs on one chromosome get sorted into gametes independently of gene pairs on other chromosomes • Punnett squares can be used to predict inheritance patterns of two or more genes simultaneously ...
... • Thus, gene pairs on one chromosome get sorted into gametes independently of gene pairs on other chromosomes • Punnett squares can be used to predict inheritance patterns of two or more genes simultaneously ...
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.↑ ↑ ↑ ↑