q 2 - cloudfront.net
... • To see what forces lead to evolutionary change, we must examine the circumstances in which the Hardy-Weinberg law may fail to apply. There are five: • mutation • gene flow • genetic drift • nonrandom mating • natural selection ...
... • To see what forces lead to evolutionary change, we must examine the circumstances in which the Hardy-Weinberg law may fail to apply. There are five: • mutation • gene flow • genetic drift • nonrandom mating • natural selection ...
Chapter 11 Patterns of Inheritance
... • We cannot say that a red flower crossed with a what flower produces a pink ...
... • We cannot say that a red flower crossed with a what flower produces a pink ...
Notes: Genetics
... F1 generation or the first generation. (F stands for filial which means son/daughter) • The F1 generation plants were bred to give the F2 generation or the second generation. (the grandkids of the original plants) ...
... F1 generation or the first generation. (F stands for filial which means son/daughter) • The F1 generation plants were bred to give the F2 generation or the second generation. (the grandkids of the original plants) ...
Slide 1
... A Tt (tall) plant is crossed with a Tt (tall plant). 1. What are the gametes formed by each parent? 2. What is the genotypic ratio? ...
... A Tt (tall) plant is crossed with a Tt (tall plant). 1. What are the gametes formed by each parent? 2. What is the genotypic ratio? ...
Study Guide 1-10
... 20. In a pedigree, what do the circles represent? Squares represent? What does it mean if a circle or square is completely shaded? What does it mean if it is only half-shaded? What if there is no shading? ...
... 20. In a pedigree, what do the circles represent? Squares represent? What does it mean if a circle or square is completely shaded? What does it mean if it is only half-shaded? What if there is no shading? ...
The Genetics
... Although natural selection acts on the phenotype, only those traits with a genetic basis can evolve. To see if evolution can take place in your population of field mustard plants, it’s important to determine whether the trait of interest, color, is under genetic control. 1. The non-purple phenotype, ...
... Although natural selection acts on the phenotype, only those traits with a genetic basis can evolve. To see if evolution can take place in your population of field mustard plants, it’s important to determine whether the trait of interest, color, is under genetic control. 1. The non-purple phenotype, ...
Fundamentals of Genetics Power Point
... SELF POLLINATION=pollen is transferred from anthers (male) of a flower to stigma (female) of same flower or flower on the same plant ...
... SELF POLLINATION=pollen is transferred from anthers (male) of a flower to stigma (female) of same flower or flower on the same plant ...
ORIGIN OF GENETICS
... for different traits are inherited independently of each other b/c there is no specific way the chromosomes must line up during metaphase of meiosis ...
... for different traits are inherited independently of each other b/c there is no specific way the chromosomes must line up during metaphase of meiosis ...
Introduction to Genetics
... height are short or tall. Seed shape is a round allele or wrinkled allele, etc. ...
... height are short or tall. Seed shape is a round allele or wrinkled allele, etc. ...
PowerPoint to accompany - Home Page of Ken Jones
... Dominant and Recessive Inheritance Dominant allele masks the phenotype of the recessive allele Recessive allele is expressed only if in a double dose (homozygous) Autosomal conditions are carried on a nonsex chromosome Sex-linked conditions are carried on a sex chromosome X-linked conditions are ca ...
... Dominant and Recessive Inheritance Dominant allele masks the phenotype of the recessive allele Recessive allele is expressed only if in a double dose (homozygous) Autosomal conditions are carried on a nonsex chromosome Sex-linked conditions are carried on a sex chromosome X-linked conditions are ca ...
Non-Mendelian Genetics
... In horses, the dominant D allele allows coat color to fully develop. The d allele dilutes, or weakens, coat color. When a chestnut (brown) horse is crossed with a cremello (nearly white) horse, their offspring are palominos (gold with white manes and tails) ...
... In horses, the dominant D allele allows coat color to fully develop. The d allele dilutes, or weakens, coat color. When a chestnut (brown) horse is crossed with a cremello (nearly white) horse, their offspring are palominos (gold with white manes and tails) ...
Class notes
... 1. Law of Segregation: A pair of factors is segregated, or separated, during the formation of gametes (each reproductive cell receives only one of a pair of alleles- to be passed on to offspring) ...
... 1. Law of Segregation: A pair of factors is segregated, or separated, during the formation of gametes (each reproductive cell receives only one of a pair of alleles- to be passed on to offspring) ...
Genes and Medical Genetics
... • If know genotype of parents, can predict chances of having a child with certain genotypes (and thus certain phenotypes). – Ex. If one parent is homozygous dominant (EE) the chance of having a child with unattached earlobes is 100% because parent only has dominant allele (E) to pass on to ...
... • If know genotype of parents, can predict chances of having a child with certain genotypes (and thus certain phenotypes). – Ex. If one parent is homozygous dominant (EE) the chance of having a child with unattached earlobes is 100% because parent only has dominant allele (E) to pass on to ...
BIOL Unit 5
... • Genes are chemical factors that determine traits. • Alleles segregate from each other and each gamete carries a single copy of each gene. This is the law of segregation – the second law Mendel observed during his pea plant experiments. • TT is homozygous (“homo” = same; “zygous” = zygote) dominant ...
... • Genes are chemical factors that determine traits. • Alleles segregate from each other and each gamete carries a single copy of each gene. This is the law of segregation – the second law Mendel observed during his pea plant experiments. • TT is homozygous (“homo” = same; “zygous” = zygote) dominant ...
Genetics & Heredity Unit Review
... into each pair of boxes in the square below. 4) The completed square shows that 3/4 (75%) of the possible offspring will have ROUND seeds and 1/4 (25%) will have wrinkled seeds. 1/4 will be homozygous dominant (RR), 2/4 will be heterozygous (Rr), and 1/4 will be homozygous recessive (rr). ...
... into each pair of boxes in the square below. 4) The completed square shows that 3/4 (75%) of the possible offspring will have ROUND seeds and 1/4 (25%) will have wrinkled seeds. 1/4 will be homozygous dominant (RR), 2/4 will be heterozygous (Rr), and 1/4 will be homozygous recessive (rr). ...
Probability Notes
... ways alleles can combine ► A way to show phenotype (the trait) & genotype (the alleles) ► A chart that shows all the possible combinations of alleles that can result when genes are crossed ...
... ways alleles can combine ► A way to show phenotype (the trait) & genotype (the alleles) ► A chart that shows all the possible combinations of alleles that can result when genes are crossed ...
Vocabulary
... Crossbreeding: The mating of two unrelated individuals from the same breed. Heterozygous: it describes an individual that has 2 different alleles for a trait. The two different alleles were inherited from the organism's two parents. For example a heterozygous individual would have the allele combina ...
... Crossbreeding: The mating of two unrelated individuals from the same breed. Heterozygous: it describes an individual that has 2 different alleles for a trait. The two different alleles were inherited from the organism's two parents. For example a heterozygous individual would have the allele combina ...
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.