Learned traits - Warren County Schools
... • Genes are found on chromosomes. • These genes describe an organisms function. • The different forms of a trait that a gene may carry are called alleles. ...
... • Genes are found on chromosomes. • These genes describe an organisms function. • The different forms of a trait that a gene may carry are called alleles. ...
Modern Genetics
... Body cells receive either more or fewer chromosomes than normal May result in certain disorders ...
... Body cells receive either more or fewer chromosomes than normal May result in certain disorders ...
73KB - NZQA
... The pedigree tree provided shows that all the actual offspring were black; therefore the most likely genotype for Rat 3 is AA, as this can only produce black offspring. However these Punnet squares only show the probability of an event occurring. The Aa / aa cross can also produce black offspring. I ...
... The pedigree tree provided shows that all the actual offspring were black; therefore the most likely genotype for Rat 3 is AA, as this can only produce black offspring. However these Punnet squares only show the probability of an event occurring. The Aa / aa cross can also produce black offspring. I ...
Practice for Ch 4 Extra: Punnett Squares Charting
... alleles that can result from a genetic cross. – Geneticists use these charts to show all the possible outcomes of a genetic cross and to determine the probability of a particular outcome. • Predicting Probabilities – – Example of crossing a black guinea pig and a white guinea. – So the P Generation ...
... alleles that can result from a genetic cross. – Geneticists use these charts to show all the possible outcomes of a genetic cross and to determine the probability of a particular outcome. • Predicting Probabilities – – Example of crossing a black guinea pig and a white guinea. – So the P Generation ...
Evolution of Populations
... If trait has simple Mendelian (dominant/recessive) inheritance, there are 2 phenotypes possible. If trait has incomplete dominance or codominance, there are 3 phenotypes possible. If trait has multiple alleles, # of phenotypes depends on # of alleles ...
... If trait has simple Mendelian (dominant/recessive) inheritance, there are 2 phenotypes possible. If trait has incomplete dominance or codominance, there are 3 phenotypes possible. If trait has multiple alleles, # of phenotypes depends on # of alleles ...
Genetics
... Law of segregation: homologous chromosomes separate during meiosis 1 Probability: the likelihood of an event occurring Monohybrid cross: cross that involves one trait Dihybrid cross: cross that involves 2 traits Punnett Square: used to predict offspring Genotypic Ratio: ratio of homozygous dominant: ...
... Law of segregation: homologous chromosomes separate during meiosis 1 Probability: the likelihood of an event occurring Monohybrid cross: cross that involves one trait Dihybrid cross: cross that involves 2 traits Punnett Square: used to predict offspring Genotypic Ratio: ratio of homozygous dominant: ...
Simple Genetic Practice Problems
... 8. In guinea pigs, the allele for short hair is dominant. What genotype would a heterozygous shorthaired guinea pig have? _______What genotype would a purebreeding, short-haired guinea pig have? _______What genotype would a longhaired guinea pig have? ________ Below use different letters to represen ...
... 8. In guinea pigs, the allele for short hair is dominant. What genotype would a heterozygous shorthaired guinea pig have? _______What genotype would a purebreeding, short-haired guinea pig have? _______What genotype would a longhaired guinea pig have? ________ Below use different letters to represen ...
Population Genetics
... • The Hardy-Weinberg theorem describes the gene pool of a nonevolving population. • This theorem states that the frequencies of alleles and genotypes in a population’s gene pool will remain constant over generations unless acted upon by agents other than Mendelian segregation and recombination of al ...
... • The Hardy-Weinberg theorem describes the gene pool of a nonevolving population. • This theorem states that the frequencies of alleles and genotypes in a population’s gene pool will remain constant over generations unless acted upon by agents other than Mendelian segregation and recombination of al ...
Study Guide - saddlespace.org
... 6. Vapereon is known for her Blue skin and spiky tail. Through genetic testing we have discovered that she is heterozygous for both conditions. If she were to mate with a male with pink skin and a smooth tail, what would their offspring look like? ...
... 6. Vapereon is known for her Blue skin and spiky tail. Through genetic testing we have discovered that she is heterozygous for both conditions. If she were to mate with a male with pink skin and a smooth tail, what would their offspring look like? ...
18.1
... generation had wrinkled seeds instead of round. • He again repeated this several times and found that the F2 generation always consisted of 75% round and 25 % wrinkled, a 3:1 ratio. ...
... generation had wrinkled seeds instead of round. • He again repeated this several times and found that the F2 generation always consisted of 75% round and 25 % wrinkled, a 3:1 ratio. ...
LAB 5: Breeding Bunnies - Ms Kim`s Biology Class
... they become deaf and cannot hear predators. Thus, their lifespan is shortened and they may not produce offspring. PART 2 Pre-Lab ...
... they become deaf and cannot hear predators. Thus, their lifespan is shortened and they may not produce offspring. PART 2 Pre-Lab ...
Genetics. HW 1 Name
... A mother with type B blood and a father with type A blood have four children, each with a di erent blood type. The best explanation for the occurrence of the four di erent blood types of the children is that blood type is ...
... A mother with type B blood and a father with type A blood have four children, each with a di erent blood type. The best explanation for the occurrence of the four di erent blood types of the children is that blood type is ...
Genetics Homework Problem Sheet # 1
... genotype pp causes red kernels. If plants heterozygous at both loci are crossed, what will be the phenotypic ratio of the F1 generation? 17. A man has six fingers on each hand and six toes on each foot. His wife and their daughter have the normal number of digits (5). Extra digits is a dominant trai ...
... genotype pp causes red kernels. If plants heterozygous at both loci are crossed, what will be the phenotypic ratio of the F1 generation? 17. A man has six fingers on each hand and six toes on each foot. His wife and their daughter have the normal number of digits (5). Extra digits is a dominant trai ...
MCDB 1041 Quiz 1 Review Sheet An excellent way to review is to
... chromosomes line up at the metaphase plate before the cell divides into two. 3. Use genetic crosses to calculate the probability of inheritance of particular alleles and to predict phenotypes of offspring: Mendelian Genetics a) Predict genotypic frequencies of children given the genotypes of the par ...
... chromosomes line up at the metaphase plate before the cell divides into two. 3. Use genetic crosses to calculate the probability of inheritance of particular alleles and to predict phenotypes of offspring: Mendelian Genetics a) Predict genotypic frequencies of children given the genotypes of the par ...
Bio 103 Lecture - Patterns of Inheritance
... do homologous chromosomes carry genes for more than one trait? are alleles for a given trait carried at the same loci on homologous chromosomes? ...
... do homologous chromosomes carry genes for more than one trait? are alleles for a given trait carried at the same loci on homologous chromosomes? ...
Genitcal Theory of Natural Selection
... - the relationship between phenotype and fitness - the relationship between phenotype and genotype - a relationship between fitness and genotype -whether or not evolutionary change occurs Modes of Selection (Figure 12.1): Directional - when disadvantageous alleles are replaced by more advantageous a ...
... - the relationship between phenotype and fitness - the relationship between phenotype and genotype - a relationship between fitness and genotype -whether or not evolutionary change occurs Modes of Selection (Figure 12.1): Directional - when disadvantageous alleles are replaced by more advantageous a ...
Reproduction and variation
... then the different genotypes and phenotypes of the offspring can be predicted • Punnett Square is a model used to predict possible outcomes for the offspring ...
... then the different genotypes and phenotypes of the offspring can be predicted • Punnett Square is a model used to predict possible outcomes for the offspring ...
Chapter 16
... • -Nonrandom mating occurs when certain genotypes or phenotypes mate with one another • -Assortative mating is a type of nonrandom mating that occurs when individuals tend to mate with those having the same phenotype with respect to a certain characteristic • -Assortative mating divides a populatio ...
... • -Nonrandom mating occurs when certain genotypes or phenotypes mate with one another • -Assortative mating is a type of nonrandom mating that occurs when individuals tend to mate with those having the same phenotype with respect to a certain characteristic • -Assortative mating divides a populatio ...
Chapter 11 Notes – Introduction to Genetics
... Each organism must inherit a single copy of every gene from both it’s parents. When an organism produces gametes, those 2 sets of genes must be separated from each other so that each gamete contains just one set of genes. B. ...
... Each organism must inherit a single copy of every gene from both it’s parents. When an organism produces gametes, those 2 sets of genes must be separated from each other so that each gamete contains just one set of genes. B. ...
GENETICS = Scientific study of inheritance
... F1 Generation = Offspring from the cross of the parents F2 Generation = Offspring produced from crosses among the F1 F = filial, refers to sons and daughters Rules: 1. Make a key; show dominant and recessive alleles 2. Properly label parents genotypes, place them on the outside of the punnett square ...
... F1 Generation = Offspring from the cross of the parents F2 Generation = Offspring produced from crosses among the F1 F = filial, refers to sons and daughters Rules: 1. Make a key; show dominant and recessive alleles 2. Properly label parents genotypes, place them on the outside of the punnett square ...
Mutation or polymorphism?
... point between a mutation and a polymorphism is 1 per cent. That is, to be classed as a polymorphism, the least common allele must have a frequency of 1per cent or more in the population. If the frequency is lower that this, the allele is regarded as a mutation. Why are some sequence variants more co ...
... point between a mutation and a polymorphism is 1 per cent. That is, to be classed as a polymorphism, the least common allele must have a frequency of 1per cent or more in the population. If the frequency is lower that this, the allele is regarded as a mutation. Why are some sequence variants more co ...
Heredity
... Inherited traits-traits that are passed on from parents to offsprings. Genes-tiny message units Learned trait-a trait that is not passed on in DNA Dominant trait-a trait that will be expressed if it is inherited. Recessive trait-a trait that is not expressed if paired with a dominant trait Incomplet ...
... Inherited traits-traits that are passed on from parents to offsprings. Genes-tiny message units Learned trait-a trait that is not passed on in DNA Dominant trait-a trait that will be expressed if it is inherited. Recessive trait-a trait that is not expressed if paired with a dominant trait Incomplet ...
Genetics - Northern Illinois University
... blood have a heterozygous genotype: IA IB. They express both types of glycolipids on their red blood cells. This is what “co-dominant” means. O blood comes from the third allele, called i because it is recessive. Homozygotes (ii) don’t make either A or B glycolipids. An IA i heterozygote had A blood ...
... blood have a heterozygous genotype: IA IB. They express both types of glycolipids on their red blood cells. This is what “co-dominant” means. O blood comes from the third allele, called i because it is recessive. Homozygotes (ii) don’t make either A or B glycolipids. An IA i heterozygote had A blood ...
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.