Population Genetics
... Using split peas, we will simulate a Hardy-Weinberg equilibrium for one locus with 2 alleles. Working with a partner, obtain 100 yellow and 100 green split peas. Each pea represents an allele (y or g) at the “split pea” gene locus. The imaginary species is diploid, so each individual in the populati ...
... Using split peas, we will simulate a Hardy-Weinberg equilibrium for one locus with 2 alleles. Working with a partner, obtain 100 yellow and 100 green split peas. Each pea represents an allele (y or g) at the “split pea” gene locus. The imaginary species is diploid, so each individual in the populati ...
Describe aspects of biology (90188)
... At least one of the parents is heterozygous / Ee / carry dominant and recessive allele for gene. For kitten to not have extra digit it must inherit the recessive allele from both parents. AND Statistically every time an Ee × Ee cross is carried out there is 25% chance that offspring would be normal ...
... At least one of the parents is heterozygous / Ee / carry dominant and recessive allele for gene. For kitten to not have extra digit it must inherit the recessive allele from both parents. AND Statistically every time an Ee × Ee cross is carried out there is 25% chance that offspring would be normal ...
Genetics
... An organism with genes that are the same for a trait are called purebreds. An organism with genes that are different for the same trait are called hybrids. Phenotype refers to a visible characteristic of an organism. This is the physical appearance of the organism. Genotype is the actual genetic mak ...
... An organism with genes that are the same for a trait are called purebreds. An organism with genes that are different for the same trait are called hybrids. Phenotype refers to a visible characteristic of an organism. This is the physical appearance of the organism. Genotype is the actual genetic mak ...
Chapter 12c Topic: Multiple alleles, multiple genes Main concepts
... Main concepts: • In classical Mendelian genetics, each gene has two possible alleles. However, some genes have more than two alleles. In human blood typing (A, B, AB, and O ), the gene for the blood type protein has three alleles (A, B, and O). One eye color gene in fruit flies has many alleles. • H ...
... Main concepts: • In classical Mendelian genetics, each gene has two possible alleles. However, some genes have more than two alleles. In human blood typing (A, B, AB, and O ), the gene for the blood type protein has three alleles (A, B, and O). One eye color gene in fruit flies has many alleles. • H ...
Reproduction
... Conclusions from Yesterday Individuals and groups vary. Genetic variation can be expressed as “allele frequency” = how often an allele occurs in a gene pool. ...
... Conclusions from Yesterday Individuals and groups vary. Genetic variation can be expressed as “allele frequency” = how often an allele occurs in a gene pool. ...
Test Cross
... • A test cross is the crossing of an organism, with an unknown genotype, to a homozygous recessive organism (tester). • A Test cross can be used to decide the genotype of the F1 generation. The test cross can be used to support the idea that the recurrence of the recessive character in the F2 genera ...
... • A test cross is the crossing of an organism, with an unknown genotype, to a homozygous recessive organism (tester). • A Test cross can be used to decide the genotype of the F1 generation. The test cross can be used to support the idea that the recurrence of the recessive character in the F2 genera ...
Genetics Part I - Napa Valley College
... Pod Shape – smooth or wrinkled Pod Color – yellow or green Flower Color – purple or white Flower Position – low on stem or at tip Stem Length – tall or short ...
... Pod Shape – smooth or wrinkled Pod Color – yellow or green Flower Color – purple or white Flower Position – low on stem or at tip Stem Length – tall or short ...
Lecture 9
... forces and they move about, or the allele frequencies may be different in males and females. • Gene frequencies are constantly changing in a population, but the effects of these processes can be assessed by using the Hardy-Weinberg law as the starting point. • HWE is the null hypothesis of evolution ...
... forces and they move about, or the allele frequencies may be different in males and females. • Gene frequencies are constantly changing in a population, but the effects of these processes can be assessed by using the Hardy-Weinberg law as the starting point. • HWE is the null hypothesis of evolution ...
BIOL
... You perform a X2 test on the phenotypic classes in the F2 generation of the cross described in question 22 to test the hypothesis that the genes assort independently. After determining a value for X2, you use a X2 table and find that the value of p is equal to 0.01. This means 1. at least one of the ...
... You perform a X2 test on the phenotypic classes in the F2 generation of the cross described in question 22 to test the hypothesis that the genes assort independently. After determining a value for X2, you use a X2 table and find that the value of p is equal to 0.01. This means 1. at least one of the ...
Microevolution
... A severe genetic bottleneck occurred in northern elephant seals. Other animals known to be affected by genetic bottlenecks include the cheetah and both ancient and modern human populations. ...
... A severe genetic bottleneck occurred in northern elephant seals. Other animals known to be affected by genetic bottlenecks include the cheetah and both ancient and modern human populations. ...
APBiology 11 - This area is password protected
... i) Heterozygote Advantage: How does the heterozygote advantage preserve variation in some situations? (Understand example of sickle cell allele and malaria.) _____Heterozygotes carry the dominant and the recessive gene. This gives tghem an advantage in selection. For example people with sickle cell ...
... i) Heterozygote Advantage: How does the heterozygote advantage preserve variation in some situations? (Understand example of sickle cell allele and malaria.) _____Heterozygotes carry the dominant and the recessive gene. This gives tghem an advantage in selection. For example people with sickle cell ...
chapter 13 lecture slides
... • Genes from mitochondria and chloroplasts are often passed to the offspring by only one parent (mother) – Maternal inheritance ...
... • Genes from mitochondria and chloroplasts are often passed to the offspring by only one parent (mother) – Maternal inheritance ...
Genetics 2008
... The study of heredity or the passing on of traits from an organism to its offspring. ...
... The study of heredity or the passing on of traits from an organism to its offspring. ...
Tongue Rolling (T)
... **Glue only the top portion of your HW to Page 30 of your I.A.N. to allow you to flip and the see the back as well. Title it “Punnett Square Practice”** ...
... **Glue only the top portion of your HW to Page 30 of your I.A.N. to allow you to flip and the see the back as well. Title it “Punnett Square Practice”** ...
Document
... 2pq is the genotype frequency of I AI B, which is type AB blood = 2(0.28)(0.17) = 0.09 2pr is the genotype frequency of I Ai, which is type A blood = 2(0.28)(0.55) = 0.31 2qr is the genotype frequency of I Bi, which is type B blood = 2(0.17)(0.55) = 0.19 Type A = 0.08 + 0.31 = 0.39, or 39% Type B = ...
... 2pq is the genotype frequency of I AI B, which is type AB blood = 2(0.28)(0.17) = 0.09 2pr is the genotype frequency of I Ai, which is type A blood = 2(0.28)(0.55) = 0.31 2qr is the genotype frequency of I Bi, which is type B blood = 2(0.17)(0.55) = 0.19 Type A = 0.08 + 0.31 = 0.39, or 39% Type B = ...
Monohybrid Crosses & Phenotypes and Genotypes
... Heredity & Genetics 1. Heredity: The passing of traits from parents to offspring 2. Genetics: Study of heredity ...
... Heredity & Genetics 1. Heredity: The passing of traits from parents to offspring 2. Genetics: Study of heredity ...
Name Date__________ Period ______
... because they have only one X chromosome (XY) Since females have two X chromosomes and men only have one, they exhibit their X chromosomes differently. Females work like every other trait we’ve been talking about – she has two alleles for the trait and however those two alleles are expressed (domin ...
... because they have only one X chromosome (XY) Since females have two X chromosomes and men only have one, they exhibit their X chromosomes differently. Females work like every other trait we’ve been talking about – she has two alleles for the trait and however those two alleles are expressed (domin ...
SI Figure 5
... Figure S1. The stretch10477 mutant localizes to the 85E-F region of the Drosophila third chromosome and exhibits a recessive out-stretched wing defect. We identified a P transposable element insertion line P{PZ}l(3)10477 obtained from the Bloomington Stock Center in which 100% of the flies in the st ...
... Figure S1. The stretch10477 mutant localizes to the 85E-F region of the Drosophila third chromosome and exhibits a recessive out-stretched wing defect. We identified a P transposable element insertion line P{PZ}l(3)10477 obtained from the Bloomington Stock Center in which 100% of the flies in the st ...
Genetics student notes. File
... thumb is on top. If the left is on top you have a dominant trait (C), the right on top is recessive (c). Your phenotype? ______________________________________ Your possible geneotype(s) ___________ ...
... thumb is on top. If the left is on top you have a dominant trait (C), the right on top is recessive (c). Your phenotype? ______________________________________ Your possible geneotype(s) ___________ ...
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.