Lecture PPT - Carol Eunmi LEE
... • The frequency of an allele in a population can be calculated from # of individuals: – For diploid organisms, the total number of alleles at a locus is the total number of individuals x 2 – The total number of dominant alleles at a locus is 2 alleles for each homozygous dominant individual – plus 1 ...
... • The frequency of an allele in a population can be calculated from # of individuals: – For diploid organisms, the total number of alleles at a locus is the total number of individuals x 2 – The total number of dominant alleles at a locus is 2 alleles for each homozygous dominant individual – plus 1 ...
Lecture PDF - Carol Eunmi LEE
... Expected Allele Frequencies at 2nd Generation p = AA + Aa/2 = 0.64 + (0.32/2) = 0.8 q = aa + Aa/2 = 0.04 + (0.32/2) = 0.2 ...
... Expected Allele Frequencies at 2nd Generation p = AA + Aa/2 = 0.64 + (0.32/2) = 0.8 q = aa + Aa/2 = 0.04 + (0.32/2) = 0.2 ...
Honors Biology – Chapter 11 and 14
... 13. Explain the principle of dominance (one gene with a dominant and recessive allele) 14. Explain other inheritance patterns, including incomplete dominance, codominance, multiple alleles and polygenic traits 15. Set up and complete Punnett squares for how one or two traits could be inherited and e ...
... 13. Explain the principle of dominance (one gene with a dominant and recessive allele) 14. Explain other inheritance patterns, including incomplete dominance, codominance, multiple alleles and polygenic traits 15. Set up and complete Punnett squares for how one or two traits could be inherited and e ...
p. 85 Genetic Disorders
... * Karyotype: a picture of all the chromosomes in a cell * Genetic Counseling: counselors that use tools such as karyotypes, pedigree charts and punnett squares to give advice on chances of passing on disorders ...
... * Karyotype: a picture of all the chromosomes in a cell * Genetic Counseling: counselors that use tools such as karyotypes, pedigree charts and punnett squares to give advice on chances of passing on disorders ...
genes - Vietsciences
... • Many diseases have their roots in gene and environment. • Currently, >4000 diseases, including sickle cell anemia and cystic fibrosis, are known to be genetic and are passed on in families. ...
... • Many diseases have their roots in gene and environment. • Currently, >4000 diseases, including sickle cell anemia and cystic fibrosis, are known to be genetic and are passed on in families. ...
What is Ecological Genetics
... pairs. Genes are arranged in linear order along microscopic threadlike bodies called chromosomes. Each human gamete (sperm or egg) contains one complete set of 23 chromosomes; this is the haploid chromosome number, designated as n. Chromosome number can vary greatly: n = 2 in some scorpions and 127 ...
... pairs. Genes are arranged in linear order along microscopic threadlike bodies called chromosomes. Each human gamete (sperm or egg) contains one complete set of 23 chromosomes; this is the haploid chromosome number, designated as n. Chromosome number can vary greatly: n = 2 in some scorpions and 127 ...
before
... Recall basic genetic principles: • The total number of alleles for any gene in a population is the number of individuals in the population x 2 If the population has 10 individuals, there are 20 copies of the A gene – some “A” alleles and some “a” alleles ...
... Recall basic genetic principles: • The total number of alleles for any gene in a population is the number of individuals in the population x 2 If the population has 10 individuals, there are 20 copies of the A gene – some “A” alleles and some “a” alleles ...
Chapter 16 Evolution of Populations
... The two main sources of genetic variation are mutations and gene shuffling. A mutation is any change in a sequence of DNA. Gene shuffling occurs during the production of gametes in sexual reproduction. It can result in millions of different combinations of genes. Mutation and gene shuffling do not c ...
... The two main sources of genetic variation are mutations and gene shuffling. A mutation is any change in a sequence of DNA. Gene shuffling occurs during the production of gametes in sexual reproduction. It can result in millions of different combinations of genes. Mutation and gene shuffling do not c ...
Population Bottlenecks
... 3. Allele frequency: the percentage of alleles for a specific trait within a gene pool 3. Immigration: to enter into a new population 4. Emigration: to exit a population 5. Genetic drift: change in allele frequency in a population 6. Founder effect: when allele frequencies change as a result of the ...
... 3. Allele frequency: the percentage of alleles for a specific trait within a gene pool 3. Immigration: to enter into a new population 4. Emigration: to exit a population 5. Genetic drift: change in allele frequency in a population 6. Founder effect: when allele frequencies change as a result of the ...
Pedigree Analysis
... whether it is a dominant or recessive trait. They can test further by recording the number of classmates that can and can’t taste PTC. They can then take paper home and test their family members. From this, they can construct a family pedigree, and examine the pattern of inheritance. Students can co ...
... whether it is a dominant or recessive trait. They can test further by recording the number of classmates that can and can’t taste PTC. They can then take paper home and test their family members. From this, they can construct a family pedigree, and examine the pattern of inheritance. Students can co ...
Genetics
... the different ways alleles can combine • A way to show phenotype & genotype • A chart that shows all the possible combinations of alleles that can result when genes are crossed ...
... the different ways alleles can combine • A way to show phenotype & genotype • A chart that shows all the possible combinations of alleles that can result when genes are crossed ...
Genetics Exam 5
... A. exhibit altered mitosis B. are unable to asexually reproduce C. exhibit altered growth D. have low fertility E. are not viable _____ Pollen from one species germinates on the stigma of another related species and sexually fertilizes the ovule. Most of the resulting plants are sterile but some of ...
... A. exhibit altered mitosis B. are unable to asexually reproduce C. exhibit altered growth D. have low fertility E. are not viable _____ Pollen from one species germinates on the stigma of another related species and sexually fertilizes the ovule. Most of the resulting plants are sterile but some of ...
Using a Punnett Square
... the different ways alleles can combine • A way to show phenotype & genotype • A chart that shows all the possible combinations of alleles that can result when genes are crossed ...
... the different ways alleles can combine • A way to show phenotype & genotype • A chart that shows all the possible combinations of alleles that can result when genes are crossed ...
Biology: All Inheritance Patterns WS
... d. Son with hemophilia? ____________________________ e. Healthy child? ___________________________ ...
... d. Son with hemophilia? ____________________________ e. Healthy child? ___________________________ ...
Biology-1 Exam Three There are a total of 68 questions on this exam
... 39. Recessive X-linked traits are more likely to be expressed in a male fruit fly than a female fruit fly because a. males are haploid. b. the male's phenotype results entirely from his single X-linked gene. c. the male chromosome is more fragile than the female chromosome. d. the male chromosome is ...
... 39. Recessive X-linked traits are more likely to be expressed in a male fruit fly than a female fruit fly because a. males are haploid. b. the male's phenotype results entirely from his single X-linked gene. c. the male chromosome is more fragile than the female chromosome. d. the male chromosome is ...
Population Genetics
... • By comparing the number of heterozygotes observed to the number expected for a population in H-W equilibrium, we can estimate the degree of inbreeding. • A measure of inbreeding in the “inbreeding coefficient”, F. F = 1 - (obs hets) / (exp hets). • If F = 0, the observed heterozygotes is equal to ...
... • By comparing the number of heterozygotes observed to the number expected for a population in H-W equilibrium, we can estimate the degree of inbreeding. • A measure of inbreeding in the “inbreeding coefficient”, F. F = 1 - (obs hets) / (exp hets). • If F = 0, the observed heterozygotes is equal to ...
Biology 40S Genetics Booklet (StudentsCopy2)
... Gregor Mendel used pea plants to show how simple traits are passed from one generation to the next. He used purebred plants (where the offspring have all the same traits as their parents). He controlled pollination so that no other plants could introduce new genotypes. We can apply Mendel's laws to ...
... Gregor Mendel used pea plants to show how simple traits are passed from one generation to the next. He used purebred plants (where the offspring have all the same traits as their parents). He controlled pollination so that no other plants could introduce new genotypes. We can apply Mendel's laws to ...
![JimmyPPlant_Genetics__and_Variation_Investigation[1]](http://s1.studyres.com/store/data/009972467_1-edadc86905cc495486feedbb7c028109-300x300.png)
JimmyPPlant_Genetics__and_Variation_Investigation[1]
... From doing our experiment in class we have learned so much about heredity and genetics. Heredity is that we get our traits from our parents through reproduction. Genetics are the study of how and why we get traits. In our experiment we had a mother plant (P1), a father plant (P2), a plant family (F1 ...
... From doing our experiment in class we have learned so much about heredity and genetics. Heredity is that we get our traits from our parents through reproduction. Genetics are the study of how and why we get traits. In our experiment we had a mother plant (P1), a father plant (P2), a plant family (F1 ...
Through the selective cross-breeding of common pea plants (Pisum
... traits show up in offspring without any blending of parent characteristics. For instance, the pea flowers are either purple or white-intermediate colors do not appear in the offspring of cross-pollinated pea plants. Mendel observed seven traits that are easily recognized and apparently only occur in ...
... traits show up in offspring without any blending of parent characteristics. For instance, the pea flowers are either purple or white-intermediate colors do not appear in the offspring of cross-pollinated pea plants. Mendel observed seven traits that are easily recognized and apparently only occur in ...
Genetics Test
... 12. In a gerbil population, the gene for coarse hair (H) is dominant, while the gene for smooth hair (h) is recessive. One pet store found that most of their customers want coarsehaired gerbils. Which cross between male and female gerbils will produce the greatest number of coarsehaired offspring? ...
... 12. In a gerbil population, the gene for coarse hair (H) is dominant, while the gene for smooth hair (h) is recessive. One pet store found that most of their customers want coarsehaired gerbils. Which cross between male and female gerbils will produce the greatest number of coarsehaired offspring? ...
Lab 8: Population Genetics and Evolution
... yardstick by which changes in allele frequency, and therefore evolution, can be measured. One can look at a population and ask: Is evolution occurring with respect to a particular gene locus? Since evolution is difficult to observe in most natural populations, we will model the evolutionary process ...
... yardstick by which changes in allele frequency, and therefore evolution, can be measured. One can look at a population and ask: Is evolution occurring with respect to a particular gene locus? Since evolution is difficult to observe in most natural populations, we will model the evolutionary process ...
Sem 2 Bio Review Questions
... A. It is only a coincidence; many other organisms have an odd number of chromosomes. B. The diploid chromosome number is always even so that when mitosis occurs each new cell gets the same number of chromosomes. C. The diploid chromosome number represents pairs of chromosomes, one from each parent, ...
... A. It is only a coincidence; many other organisms have an odd number of chromosomes. B. The diploid chromosome number is always even so that when mitosis occurs each new cell gets the same number of chromosomes. C. The diploid chromosome number represents pairs of chromosomes, one from each parent, ...
Mendelian Genetic Disease handout
... • A son of a carrier mother has a 50 % chance of inheriting the trait. • Male-to-male transmission never occurs. • Carrier females are usually asymptomatic, but some may express the condition with variable severity because of Xinactivation. ...
... • A son of a carrier mother has a 50 % chance of inheriting the trait. • Male-to-male transmission never occurs. • Carrier females are usually asymptomatic, but some may express the condition with variable severity because of Xinactivation. ...
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.