Slide 1 - Fort Bend ISD
... gene with 2 alleles. Often, one is dominant and the other is recessive Example: widow’s peaks and dimples. ...
... gene with 2 alleles. Often, one is dominant and the other is recessive Example: widow’s peaks and dimples. ...
Pedigree Problems:
... Sometimes, you will see some shapes filled in only half way this notation indicates a hybrid (heterozygous) or carrier of the trait. Read pages 396-397 (Sect. 14.1) in your textbook for more information. Analyzing Simple Pedigrees: A pedigree is just like a family tree except that it focuses on a sp ...
... Sometimes, you will see some shapes filled in only half way this notation indicates a hybrid (heterozygous) or carrier of the trait. Read pages 396-397 (Sect. 14.1) in your textbook for more information. Analyzing Simple Pedigrees: A pedigree is just like a family tree except that it focuses on a sp ...
Reading, pages 46-55 HEADING: “From Mendel to the Human
... Draw a Punnett Square for the offspring of parent pea plants that each have the genotype “Tt” for the feature of height. Draw it here What fraction of these offspring would be short? ________________ ...
... Draw a Punnett Square for the offspring of parent pea plants that each have the genotype “Tt” for the feature of height. Draw it here What fraction of these offspring would be short? ________________ ...
self-fertilize
... Each trait is governed by 2 particles*, one inherited from each parent. These two particles do not influence each other in any way within an individual, but separate, uncontaminated in any way, into gametes at the time of reproductive cell Formation. (an unstated corollary is that any pollen cell ca ...
... Each trait is governed by 2 particles*, one inherited from each parent. These two particles do not influence each other in any way within an individual, but separate, uncontaminated in any way, into gametes at the time of reproductive cell Formation. (an unstated corollary is that any pollen cell ca ...
Chapter 11 Intro to Genetics
... --yellow or green (alleles) --hair color (trait/gene) --brown, black, blonde (alleles) ...
... --yellow or green (alleles) --hair color (trait/gene) --brown, black, blonde (alleles) ...
13) PHENOTYPE: the set of observable characteristics of an
... tail shape (T). Notice that some of the alleles are labeled with uppercase letter and some are lowercase letters. Both upper and lowercase letter Es are alleles for eye color. ...
... tail shape (T). Notice that some of the alleles are labeled with uppercase letter and some are lowercase letters. Both upper and lowercase letter Es are alleles for eye color. ...
Genetics Practice Problems
... want to get white pattipans then at least one of the parents must be white. Which color is dominant? White alleles are dominant to yellow alleles. If yellow were dominant, then you should be able to get white squash from a cross of two yellow heterozygotes. 2. True-breeding tall red-flowered plants ...
... want to get white pattipans then at least one of the parents must be white. Which color is dominant? White alleles are dominant to yellow alleles. If yellow were dominant, then you should be able to get white squash from a cross of two yellow heterozygotes. 2. True-breeding tall red-flowered plants ...
Exam Review – Part 1
... Sex-Linked Inheritance • What is unique about sex-linked inheritance? • The traits are carries on the sex chromosomes instead of the autosomes. • We use Xh X and XY ...
... Sex-Linked Inheritance • What is unique about sex-linked inheritance? • The traits are carries on the sex chromosomes instead of the autosomes. • We use Xh X and XY ...
Chapter 12
... During gamete formation only one allele for each trait will be passed from parent to offspring. Mendel discovered that when crossing for two traits, alleles for different traits segregated independent of each other and that even greater variations and more complex ratios would occur. The Law o ...
... During gamete formation only one allele for each trait will be passed from parent to offspring. Mendel discovered that when crossing for two traits, alleles for different traits segregated independent of each other and that even greater variations and more complex ratios would occur. The Law o ...
Sex-linked genes - Mercer Island School District
... 2. The bison herd on Konza Prairie has begun to show a genetic defect. Some of the males have a condition known as "rabbit hock" in which the knee of the back leg is malformed slightly. We do not yet know the genes controlling this trait but for the sake of our question, we shall assume it is a sex- ...
... 2. The bison herd on Konza Prairie has begun to show a genetic defect. Some of the males have a condition known as "rabbit hock" in which the knee of the back leg is malformed slightly. We do not yet know the genes controlling this trait but for the sake of our question, we shall assume it is a sex- ...
Mendelian genetics At the beginning of the last section, we
... What was going on? Where did white suddenly come from? This should be no surprise - some of the characteristics about you may quite possibly come from your grand parents, and not your parents. Nevertheless, what's happening? Mendel developed four hypotheses based on his research. Mendel's four hypot ...
... What was going on? Where did white suddenly come from? This should be no surprise - some of the characteristics about you may quite possibly come from your grand parents, and not your parents. Nevertheless, what's happening? Mendel developed four hypotheses based on his research. Mendel's four hypot ...
KS4 Biology
... Some alleles are dominant to other forms of a gene and will always be expressed. ...
... Some alleles are dominant to other forms of a gene and will always be expressed. ...
Genetics and Evolution
... Genetic drift-allele frequencies can change due to chance alone Gene flow-the movement of alleles from one population to another, changes allele frequencies in each pop. Mutation-can form new alleles, creates genetic variation needed for evolution Sexual selection-certain traits may improve ...
... Genetic drift-allele frequencies can change due to chance alone Gene flow-the movement of alleles from one population to another, changes allele frequencies in each pop. Mutation-can form new alleles, creates genetic variation needed for evolution Sexual selection-certain traits may improve ...
5. Genetics
... Some human conditions characterized by autosomal recessive alleles are albinism, cystic fibrosis, TaySachs, and phenylketonuria (PKU). These disorders can be contrasted with those produced by possession of just one autosomal dominant allele, conditions such as Huntington disease, dwarfism, and neuro ...
... Some human conditions characterized by autosomal recessive alleles are albinism, cystic fibrosis, TaySachs, and phenylketonuria (PKU). These disorders can be contrasted with those produced by possession of just one autosomal dominant allele, conditions such as Huntington disease, dwarfism, and neuro ...
Semester Final Review
... 5. What monomers make up each of the following? proteins, lipids, carbohydrates, nucleic acids Describe the properties of each. 6. Be able to recognize and name all the functional groups. 7. What are the definitions to hydrophobic and hydrophilic? 8. What do enzymes do to catalyze a reaction? 9. Wha ...
... 5. What monomers make up each of the following? proteins, lipids, carbohydrates, nucleic acids Describe the properties of each. 6. Be able to recognize and name all the functional groups. 7. What are the definitions to hydrophobic and hydrophilic? 8. What do enzymes do to catalyze a reaction? 9. Wha ...
Genetics and Evolution
... Genetic drift-allele frequencies can change due to chance alone Gene flow-the movement of alleles from one population to another, changes allele frequencies in each pop. Mutation-can form new alleles, creates genetic variation needed for evolution Sexual selection-certain traits may improve ...
... Genetic drift-allele frequencies can change due to chance alone Gene flow-the movement of alleles from one population to another, changes allele frequencies in each pop. Mutation-can form new alleles, creates genetic variation needed for evolution Sexual selection-certain traits may improve ...
The Genetics of Parenthood: Background Information
... Why do people, even closely related people, look slightly different from each other? The reason for these differences in physical characteristics (called phenotype) is the different combination of genes possessed by each individual. To illustrate the tremendous variety possible when you begin to com ...
... Why do people, even closely related people, look slightly different from each other? The reason for these differences in physical characteristics (called phenotype) is the different combination of genes possessed by each individual. To illustrate the tremendous variety possible when you begin to com ...
The Genetics of Parenthood: Background
... Why do people, even closely related people, look slightly different from each other? The reason for these differences in physical characteristics (called phenotype) is the different combination of genes possessed by each individual. To illustrate the tremendous variety possible when you begin to com ...
... Why do people, even closely related people, look slightly different from each other? The reason for these differences in physical characteristics (called phenotype) is the different combination of genes possessed by each individual. To illustrate the tremendous variety possible when you begin to com ...
Chapter 7 – Are You Only as Smart as Your Genes
... likelihood of an offspring acquiring a trait • For one trait, a four square Punnett Square is used – Each square represents a 25% chance ...
... likelihood of an offspring acquiring a trait • For one trait, a four square Punnett Square is used – Each square represents a 25% chance ...
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.