File - Mrs. Lorenz`s Science Class
... The Hardy-Weinberg Principle states that allele frequencies in a population should remain constant unless one or more factors cause those frequencies to change. These factors include: non-random mating, small population size, immigration or emigration, mutations, and natural selection. Populations a ...
... The Hardy-Weinberg Principle states that allele frequencies in a population should remain constant unless one or more factors cause those frequencies to change. These factors include: non-random mating, small population size, immigration or emigration, mutations, and natural selection. Populations a ...
Sex-linked Traits in Humans - Southington Public Schools
... Males have XY as their sex chromosomes; females have XX. Sex-linked Traits in Humans Because the sex chromosomes are a matched pair in females and an unmatched pair in males, traits on these genes show unusual patterns of inheritance. Traits that have their genes on the X chromosome are called X-lin ...
... Males have XY as their sex chromosomes; females have XX. Sex-linked Traits in Humans Because the sex chromosomes are a matched pair in females and an unmatched pair in males, traits on these genes show unusual patterns of inheritance. Traits that have their genes on the X chromosome are called X-lin ...
Genetics
... (b), wing size (vg), and eye color (cn). • The recombination frequency between cn and b is 9%. • The recombination frequency between cn and vg is 9.5%. • The recombination frequency between b and vg is 17%. • The only possible arrangement of these three genes places the eye color gene between the ot ...
... (b), wing size (vg), and eye color (cn). • The recombination frequency between cn and b is 9%. • The recombination frequency between cn and vg is 9.5%. • The recombination frequency between b and vg is 17%. • The only possible arrangement of these three genes places the eye color gene between the ot ...
extra credit: problems in genetics
... lower case of this letter to show the recessive. In the case of incomplete dominance, use the capital letter of each trait or color. Punnett Squares are handy in working these problems. Show all your work on this sheet and record your answers in the spaces provided. Express proportions as fractions. ...
... lower case of this letter to show the recessive. In the case of incomplete dominance, use the capital letter of each trait or color. Punnett Squares are handy in working these problems. Show all your work on this sheet and record your answers in the spaces provided. Express proportions as fractions. ...
I. Problems Involving One Gene
... lovely orange hair on his snout. He and his mate, OrgggWny, have six offspring, three boys and three girls. Please answer the following questions about this family. How many of MyxRotcccc’s and OrgggWny’s offspring have hairy snouts? Can you predict which ones? Their eldest son, Bob, marries and has ...
... lovely orange hair on his snout. He and his mate, OrgggWny, have six offspring, three boys and three girls. Please answer the following questions about this family. How many of MyxRotcccc’s and OrgggWny’s offspring have hairy snouts? Can you predict which ones? Their eldest son, Bob, marries and has ...
Lecture 15
... gene, these are called alleles – Different alleles code for slightly different versions of the same protein ...
... gene, these are called alleles – Different alleles code for slightly different versions of the same protein ...
Part I: Multiple Choice ______1. A haploid cell is a cell a. in which
... ______33. In cocker spaniels, black color (B) is dominant over red (b), and solid color (S) is dominant over spotted (s). If the genes are unlinked, and the offspring of BBss and bbss individuals are mated with each other, and then two of the F1 generation are mated with each other, what fraction o ...
... ______33. In cocker spaniels, black color (B) is dominant over red (b), and solid color (S) is dominant over spotted (s). If the genes are unlinked, and the offspring of BBss and bbss individuals are mated with each other, and then two of the F1 generation are mated with each other, what fraction o ...
click here
... 2. In this cross, we see that the inheritance pattern in the F1 shows a ‘criss-cross’ similar to that observed for the white eye phenotype in Drosophila- only the sexes are reversedyellow males give rise only to green females. Remember, however, that females in birds are the heterogametic sex (ZW), ...
... 2. In this cross, we see that the inheritance pattern in the F1 shows a ‘criss-cross’ similar to that observed for the white eye phenotype in Drosophila- only the sexes are reversedyellow males give rise only to green females. Remember, however, that females in birds are the heterogametic sex (ZW), ...
2013 genetic review
... allows individuals to find out whether they are at risk for developing many different disorders. Some genetic disorders are caused by traits that developed from mutations in the DNA molecule. Suppose the trait for a genetic disorder is “d” and the trait for not getting the disorder is “D.” Mrs. Wats ...
... allows individuals to find out whether they are at risk for developing many different disorders. Some genetic disorders are caused by traits that developed from mutations in the DNA molecule. Suppose the trait for a genetic disorder is “d” and the trait for not getting the disorder is “D.” Mrs. Wats ...
Slide 1 - Indiana University–Purdue University Indianapolis
... Gene mutations can be either inherited from a parent or acquired. A hereditary mutation is a mistake that is present in the DNA of virtually all body cells. Hereditary mutations are also called germline mutations because the gene change exists in the reproductive cells (germ cells) and can be passed ...
... Gene mutations can be either inherited from a parent or acquired. A hereditary mutation is a mistake that is present in the DNA of virtually all body cells. Hereditary mutations are also called germline mutations because the gene change exists in the reproductive cells (germ cells) and can be passed ...
2013 genetic review
... allows individuals to find out whether they are at risk for developing many different disorders. Some genetic disorders are caused by traits that developed from mutations in the DNA molecule. Suppose the trait for a genetic disorder is “d” and the trait for not getting the disorder is “D.” Mrs. Wats ...
... allows individuals to find out whether they are at risk for developing many different disorders. Some genetic disorders are caused by traits that developed from mutations in the DNA molecule. Suppose the trait for a genetic disorder is “d” and the trait for not getting the disorder is “D.” Mrs. Wats ...
StatNews #87 The Hardy-Weinberg Principle in Population Genetics
... generation to the next without any evolutionary factors such as non-random mating, natural selection, mutations, gene flow, etc. This state of equilibrium is also called Hardy-Weinberg Equilibrium (HWE). If genotype frequencies differ from what we would expect under HWE, we assume that one or more o ...
... generation to the next without any evolutionary factors such as non-random mating, natural selection, mutations, gene flow, etc. This state of equilibrium is also called Hardy-Weinberg Equilibrium (HWE). If genotype frequencies differ from what we would expect under HWE, we assume that one or more o ...
6.2 Mendel and inheritance – Further questions and answers Q1. Bk
... In the test cross the spiral-tailed wolf in question is mated with a straight-tailed wolf. If there are any straight-tailed offspring in the litter then the genotype of the spiral-tailed wolf must be Aa. If the litter contains only cubs with spiral tails, this would indicate a likelihood of the spir ...
... In the test cross the spiral-tailed wolf in question is mated with a straight-tailed wolf. If there are any straight-tailed offspring in the litter then the genotype of the spiral-tailed wolf must be Aa. If the litter contains only cubs with spiral tails, this would indicate a likelihood of the spir ...
RRYY
... Mendel concluded that each organism has two factors that control each of its traits. These factors are genes and that they are located on chromosomes in alternative forms. We call these different gene forms alleles An organism’s two alleles are located on different copies of a chromosome—one i ...
... Mendel concluded that each organism has two factors that control each of its traits. These factors are genes and that they are located on chromosomes in alternative forms. We call these different gene forms alleles An organism’s two alleles are located on different copies of a chromosome—one i ...
Lab - Population Genetics and Evolution
... It is a condition caused by a mutation on one allele, in which a homozygous recessive does not survive to reproduce. For this simulation you will assume that the homozygous recessive individuals never survive. Heterozygous and homozygous dominant individuals always survive. The procedure is similar ...
... It is a condition caused by a mutation on one allele, in which a homozygous recessive does not survive to reproduce. For this simulation you will assume that the homozygous recessive individuals never survive. Heterozygous and homozygous dominant individuals always survive. The procedure is similar ...
7.1 Study Guide
... MAIN IDEA: Two copies of each autosomal gene affect phenotype. Fill in the blank or circle the word or phrase that best completes the sentence. ...
... MAIN IDEA: Two copies of each autosomal gene affect phenotype. Fill in the blank or circle the word or phrase that best completes the sentence. ...
Chapter 9
... X-linked genes (Xg) can be passed from: ____________ to _______ and __________ ____________ to _______ Y-linked genes (Yg) can be passed from: ____________ to _______ ...
... X-linked genes (Xg) can be passed from: ____________ to _______ and __________ ____________ to _______ Y-linked genes (Yg) can be passed from: ____________ to _______ ...
Exam1,2010 - Evolutionary Biology Homepage
... best explanation for the differences described above? (A) Humans are more advanced than pea plants; thus, the genetics of peas is much simpler than humans. (B) The intermediate size pea plant seeds are aborted within the seedpod and thus will never develop. (C) The intermediate size pea plant seeds ...
... best explanation for the differences described above? (A) Humans are more advanced than pea plants; thus, the genetics of peas is much simpler than humans. (B) The intermediate size pea plant seeds are aborted within the seedpod and thus will never develop. (C) The intermediate size pea plant seeds ...
PowerPoint Notes on Chapter 8 – Mendel and Heredity
... The possible gametes that one parent can produce are written along the top of the square. The possible gametes that the other parent can produce are written along the left side of the square. Each box inside the square is filled in with two letters obtained by combining the allele along the top of ...
... The possible gametes that one parent can produce are written along the top of the square. The possible gametes that the other parent can produce are written along the left side of the square. Each box inside the square is filled in with two letters obtained by combining the allele along the top of ...
Titan Tutoring for Biology
... the letter of your choice Tt homozygous dominant genotype using the letter of your choice. BB homozygous recessive genotype using the letter of your choice. rr ...
... the letter of your choice Tt homozygous dominant genotype using the letter of your choice. BB homozygous recessive genotype using the letter of your choice. rr ...
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.