TT2007 Lecture 8 HB
... gene on the two homologous chromosomes heterozygous organism- carrying dissimilar alleles of a gene(s); not homozygous dominant trait- if an allele is present in a heterozygous genotype, it results in a phenotype characteristic of the allele recessive trait- refers to an allele that results in a cha ...
... gene on the two homologous chromosomes heterozygous organism- carrying dissimilar alleles of a gene(s); not homozygous dominant trait- if an allele is present in a heterozygous genotype, it results in a phenotype characteristic of the allele recessive trait- refers to an allele that results in a cha ...
NAME
... 4. Now on to Mendel. In dogs, the black fur gene (B) is dominant to the recessive brown fur gene (b). Circle the correct combination of genes and write down the color of the dog if it is: homozygous dominant ( BB Bb bb ) _______________________ homozygous recessive ( BB Bb bb ) __________________ he ...
... 4. Now on to Mendel. In dogs, the black fur gene (B) is dominant to the recessive brown fur gene (b). Circle the correct combination of genes and write down the color of the dog if it is: homozygous dominant ( BB Bb bb ) _______________________ homozygous recessive ( BB Bb bb ) __________________ he ...
Slide 1
... work out the F2 what combination of alleles must you have for the P1? AA and aa (homozygous dom and rec) Show how using a genetic cross pink pea flowers may skip a generation. P1 phenotypes ...
... work out the F2 what combination of alleles must you have for the P1? AA and aa (homozygous dom and rec) Show how using a genetic cross pink pea flowers may skip a generation. P1 phenotypes ...
14_DetailLectOut
... The reappearance of white-flowered plants in the F2 generation indicated that the heritable factor for the white trait was not diluted or lost by coexisting with the purple-flower factor in F1 hybrids. Mendel found similar 3:1 ratios of two traits in F2 offspring when he conducted crosses for six ot ...
... The reappearance of white-flowered plants in the F2 generation indicated that the heritable factor for the white trait was not diluted or lost by coexisting with the purple-flower factor in F1 hybrids. Mendel found similar 3:1 ratios of two traits in F2 offspring when he conducted crosses for six ot ...
Biology Chapter 13 and 14
... 1. Hardy-Weinberg principle states that allele frequencies in a population will remain constant unless one or more factors cause those frequencies to change. 2. If allele frequencies remained constant ...
... 1. Hardy-Weinberg principle states that allele frequencies in a population will remain constant unless one or more factors cause those frequencies to change. 2. If allele frequencies remained constant ...
Genetic Control of Cell Function and Inheritance
... • Single mutant gene from an affected parent is transmitted to an offspring regardless of sex • The affected parent has a 50% chance of transmitting the disorder to each offspring • Unaffected siblings of the offspring do not transmit the disorder • In some cases, the person with an autosomal domina ...
... • Single mutant gene from an affected parent is transmitted to an offspring regardless of sex • The affected parent has a 50% chance of transmitting the disorder to each offspring • Unaffected siblings of the offspring do not transmit the disorder • In some cases, the person with an autosomal domina ...
The Hardy-Weinberg Equation
... The three terms of this binomial expansion indicate the frequencies of the three genotypes: p2 = frequency of AA (homozygous dominant) 2pq = frequency of Aa (heterozygous) q2 = frequency of aa (homozygous recessive) When completing questions based on Hardy Weinberg principle always read the question ...
... The three terms of this binomial expansion indicate the frequencies of the three genotypes: p2 = frequency of AA (homozygous dominant) 2pq = frequency of Aa (heterozygous) q2 = frequency of aa (homozygous recessive) When completing questions based on Hardy Weinberg principle always read the question ...
Genetics Practice Problems
... 2. For each of the genotypes below determine what phenotypes would be possible. Purple flowers are dominant to white flowers. PP __________________ Pp __________________ pp __________________ ...
... 2. For each of the genotypes below determine what phenotypes would be possible. Purple flowers are dominant to white flowers. PP __________________ Pp __________________ pp __________________ ...
A/A b/b
... 5. for II generation, determine probability of inheriting allele 6. for II generation, same as 3 7. for II generation, same as 4… etc to finish pedigree ...
... 5. for II generation, determine probability of inheriting allele 6. for II generation, same as 3 7. for II generation, same as 4… etc to finish pedigree ...
Reading Study Guide 1 - philipdarrenjones.com
... 18. Crossing Over 9. Genetic Disorder 19. Homologous Chromosomes 10. Syndrome B. Figures: 12.1, 12.2, 12.3, 12.4, 12.5, 12.6, 12.7, 12.8, 12.9, 12.10, 12.11 C. Tables: None D. Study Questions 1. How do autosomes differ from sex chromosomes? 2. Which combination of sex chromosomes codes for a male? F ...
... 18. Crossing Over 9. Genetic Disorder 19. Homologous Chromosomes 10. Syndrome B. Figures: 12.1, 12.2, 12.3, 12.4, 12.5, 12.6, 12.7, 12.8, 12.9, 12.10, 12.11 C. Tables: None D. Study Questions 1. How do autosomes differ from sex chromosomes? 2. Which combination of sex chromosomes codes for a male? F ...
and __. What is the probability the offspring will have blue eyes?
... two parents with blue eyes have a brown-eyed offspring? ...
... two parents with blue eyes have a brown-eyed offspring? ...
Lecture 1. The subject and the main tasks of Medical Genetics
... of action, of mutations at individual loci); •multifactorial traits (diseases or variations where the phenotypes are strongly influenced by the action of mutant alleles at several loci acting in concert); •chromosomal abnormalities (diseases where the phenotypes are largely determined by physical ch ...
... of action, of mutations at individual loci); •multifactorial traits (diseases or variations where the phenotypes are strongly influenced by the action of mutant alleles at several loci acting in concert); •chromosomal abnormalities (diseases where the phenotypes are largely determined by physical ch ...
answers to worksheet
... 4) What fraction of the children will be AA? BB? AB or BA? How many of the 1000 children do you expect to be AA? BB? AB or BA? Answer: Expected Fraction AA=0.09, Fraction BB=0.49, and Fraction AB or BA=0.42 Expected number AA=90, number BB=490, number AB or BA=420 5) How do the results compare to th ...
... 4) What fraction of the children will be AA? BB? AB or BA? How many of the 1000 children do you expect to be AA? BB? AB or BA? Answer: Expected Fraction AA=0.09, Fraction BB=0.49, and Fraction AB or BA=0.42 Expected number AA=90, number BB=490, number AB or BA=420 5) How do the results compare to th ...
One of the first COMT fMRI studies
... •However, to complicate things further still …when susceptibility to depression is considered, there is some suggestion that this dominance effect may not be so clear with l/s individuals showing intermediate patterns for some measures of risk. • Interactions – we may wish to consider whether two or ...
... •However, to complicate things further still …when susceptibility to depression is considered, there is some suggestion that this dominance effect may not be so clear with l/s individuals showing intermediate patterns for some measures of risk. • Interactions – we may wish to consider whether two or ...
Human Genetics
... many, if not most, inherited traits are controlled by more than one gene eg. flower color in sweet peas two sets of genes are involved in producing a trait in this case must have 1 dominant gene in each pair to get a purple flower otherwise will have a white flower neither dominant allele can expr ...
... many, if not most, inherited traits are controlled by more than one gene eg. flower color in sweet peas two sets of genes are involved in producing a trait in this case must have 1 dominant gene in each pair to get a purple flower otherwise will have a white flower neither dominant allele can expr ...
Evolution at Multiple Loci
... • The phenotype is dependent upon the allele at one locus interacting with an allele at another locus. Not a predictable outcome. • Allele X may affect the phenotype one way in the presence of allele A, and affect the phenotype another way in the presence of allele B. • Because of this dependence, t ...
... • The phenotype is dependent upon the allele at one locus interacting with an allele at another locus. Not a predictable outcome. • Allele X may affect the phenotype one way in the presence of allele A, and affect the phenotype another way in the presence of allele B. • Because of this dependence, t ...
Genes Within Populations
... disperse and become the founders of a new, isolated population at some distance from their place of origin • Since these individuals may not represent all of the alleles present in the original population, alleles are lost and frequencies of alleles changed ...
... disperse and become the founders of a new, isolated population at some distance from their place of origin • Since these individuals may not represent all of the alleles present in the original population, alleles are lost and frequencies of alleles changed ...
Topic 1 – Classification, variation and inheritance
... Female gametes – egg cells in both animals and plants Gametes are different from other body cells because they only have one copy of each chromosome (i.e 23 chromosomes in their nucleus…not 46) Gametes only have one allele for each gene In sexual reproduction the male and female gametes fuse togeth ...
... Female gametes – egg cells in both animals and plants Gametes are different from other body cells because they only have one copy of each chromosome (i.e 23 chromosomes in their nucleus…not 46) Gametes only have one allele for each gene In sexual reproduction the male and female gametes fuse togeth ...
Dominance (genetics)
Dominance in genetics is a relationship between alleles of one gene, in which the effect on phenotype of one allele masks the contribution of a second allele at the same locus. The first allele is dominant and the second allele is recessive. For genes on an autosome (any chromosome other than a sex chromosome), the alleles and their associated traits are autosomal dominant or autosomal recessive. Dominance is a key concept in Mendelian inheritance and classical genetics. Often the dominant allele codes for a functional protein whereas the recessive allele does not.A classic example of dominance is the inheritance of seed shape, for example a pea shape in peas. Peas may be round, associated with allele R or wrinkled, associated with allele r. In this case, three combinations of alleles (genotypes) are possible: RR, Rr, and rr. The RR individuals have round peas and the rr individuals have wrinkled peas. In Rr individuals the R allele masks the presence of the r allele, so these individuals also have round peas. Thus, allele R is dominant to allele r, and allele r is recessive to allele R. This use of upper case letters for dominant alleles and lower caseones for recessive alleles is a widely followed convention.More generally, where a gene exists in two allelic versions (designated A and a), three combinations of alleles are possible: AA, Aa, and aa. If AA and aa individuals (homozygotes) show different forms of some trait (phenotypes), and Aa individuals (heterozygotes) show the same phenotype as AA individuals, then allele A is said to dominate or be dominant to or show dominance to allele a, and a is said to be recessive to A.Dominance is not inherent to an allele. It is a relationship between alleles; one allele can be dominant over a second allele, recessive to a third allele, and codominant to a fourth. Also, an allele may be dominant for a particular aspect of phenotype but not for other aspects influenced by the same gene. Dominance differs from epistasis, a relationship in which an allele of one gene affects the expression of another allele at a different gene.