Unit 1: Cells - Loudoun County Public Schools
... 5. You should be able to define and utilize the following important terminology of genetics a) gene- section of DNA that carries a trait b) allele- as a form of a gene. c)dominant- a trait, that when present will be seen d) recessive- a trait that will only be seen when it is the only one present e ...
... 5. You should be able to define and utilize the following important terminology of genetics a) gene- section of DNA that carries a trait b) allele- as a form of a gene. c)dominant- a trait, that when present will be seen d) recessive- a trait that will only be seen when it is the only one present e ...
1) The Smallest Unit of Evolution
... mating occurs, therefore allele frequencies do not change • If p and q represent the relative frequencies of the only two possible alleles in a population at a particular locus, then – p2 + 2pq + q2 = 1 – where p2 and q2 represent the frequencies of the homozygous genotypes and 2pq represents the fr ...
... mating occurs, therefore allele frequencies do not change • If p and q represent the relative frequencies of the only two possible alleles in a population at a particular locus, then – p2 + 2pq + q2 = 1 – where p2 and q2 represent the frequencies of the homozygous genotypes and 2pq represents the fr ...
Unit 3 PreTest Heredity and Genetics
... The graph above shows the survival rate for several different varities of corn during a sever July drought. One type of corn was bred selectively over many years to thrive in dry climates. Which typ fo corn was ...
... The graph above shows the survival rate for several different varities of corn during a sever July drought. One type of corn was bred selectively over many years to thrive in dry climates. Which typ fo corn was ...
File
... • Autosomal means inherited on chromosome 1-22 while sexlinked means inherited on either X or Y chromosome. • Autosomal recessive – e.g., PKU, Tay-Sachs, albinism ...
... • Autosomal means inherited on chromosome 1-22 while sexlinked means inherited on either X or Y chromosome. • Autosomal recessive – e.g., PKU, Tay-Sachs, albinism ...
Genetics and Protein Synthesis
... ■ Principle of Dominant and Recessive – some genes can hide or mask others ■ Law of Segregation – Mendel’s genetics principle that states that genes in pairs separate during gamete formation and gene pairs are reformed during fertilization ...
... ■ Principle of Dominant and Recessive – some genes can hide or mask others ■ Law of Segregation – Mendel’s genetics principle that states that genes in pairs separate during gamete formation and gene pairs are reformed during fertilization ...
Solving Genetics Problems I: Monohybrid Crosses
... • So we have now figured out that, if Honey and Ritz have a lot of babies, we can predict that: • 25% should be BB homozygous • 50% should be Bb homozygous recessive • 25% should be bb heterozygous ...
... • So we have now figured out that, if Honey and Ritz have a lot of babies, we can predict that: • 25% should be BB homozygous • 50% should be Bb homozygous recessive • 25% should be bb heterozygous ...
sex chromosomes - Wando High School
... • The DNA of the daughter cells produced by meiosis is different from that of the parent cells due to three sources of genetic diversity provided by sexual reproduction and meiosis: • 1. Fertilization combines the genetic material of two genetically unique individuals (the two parents. ) • 2. Cross ...
... • The DNA of the daughter cells produced by meiosis is different from that of the parent cells due to three sources of genetic diversity provided by sexual reproduction and meiosis: • 1. Fertilization combines the genetic material of two genetically unique individuals (the two parents. ) • 2. Cross ...
Review Sheet
... 4. reproduction – the making of offspring. There are several types of reproduction: Budding – a bud forms on an animal and breaks off, forming a new organism. The new organism is a clone of the parent organism Regeneration – a new organism is produced from part of an original organism. For examp ...
... 4. reproduction – the making of offspring. There are several types of reproduction: Budding – a bud forms on an animal and breaks off, forming a new organism. The new organism is a clone of the parent organism Regeneration – a new organism is produced from part of an original organism. For examp ...
Hardy weinberg lab
... 1. Using the class as a sample population, the allele frequency of a gene controlling the ability to taste the chemical PTC (phenylthiocarbamide) could be estimated. A bitter taste reaction is evidence of the presence of a dominant allele in either a homozygous (AA) or heterozygous (Aa) condition. T ...
... 1. Using the class as a sample population, the allele frequency of a gene controlling the ability to taste the chemical PTC (phenylthiocarbamide) could be estimated. A bitter taste reaction is evidence of the presence of a dominant allele in either a homozygous (AA) or heterozygous (Aa) condition. T ...
Livestock Breeding and Genetics
... • This refers to the physical characteristic of the animal. • Notice both Phenotype and Physical start with P! • This is what we see in the animal, such as color. ...
... • This refers to the physical characteristic of the animal. • Notice both Phenotype and Physical start with P! • This is what we see in the animal, such as color. ...
The principles and methods formulated by Gregor
... To simulate a mating between two heterozygous (Aa) parents, two students will each toss a coin and the result of the pair of coin tosses will indicate the pair of alleles contributed by an egg and a sperm to the baby that results from that mating. 1. Get two pennies and find someone to “mate” with. ...
... To simulate a mating between two heterozygous (Aa) parents, two students will each toss a coin and the result of the pair of coin tosses will indicate the pair of alleles contributed by an egg and a sperm to the baby that results from that mating. 1. Get two pennies and find someone to “mate” with. ...
The Evolution of Populations
... Individuals who are heterozygous at a particular locus have greater fitness than do both kinds of homozygotes ...
... Individuals who are heterozygous at a particular locus have greater fitness than do both kinds of homozygotes ...
Biology Homework Chapter 8
... 3. Draw and Explain how non-disjunction during meiosis can result in an individual having an extra chromosome (47 of them!). Please refer to either Trisomy 21 or Klinefelter’s Syndrome (XXY) in your explanation. (See figure 8.14, page 194 for help) ...
... 3. Draw and Explain how non-disjunction during meiosis can result in an individual having an extra chromosome (47 of them!). Please refer to either Trisomy 21 or Klinefelter’s Syndrome (XXY) in your explanation. (See figure 8.14, page 194 for help) ...
Natural Selection
... Natural Selection – in a population, organisms with a genetic trait that increases the chance of having offspring will pass on their genes to the ...
... Natural Selection – in a population, organisms with a genetic trait that increases the chance of having offspring will pass on their genes to the ...
Name Monohybrid Cross Homework Problems Answer the following
... 3. In guinea pigs, black coat color is dominant over white coat color. What type of offspring could result from a cross between a homozygous black guinea pig and a heterozygous black guinea pig? Use a Punnett Square to obtain your results. Include genotype and phenotype ratios. 4. A pea plant, homoz ...
... 3. In guinea pigs, black coat color is dominant over white coat color. What type of offspring could result from a cross between a homozygous black guinea pig and a heterozygous black guinea pig? Use a Punnett Square to obtain your results. Include genotype and phenotype ratios. 4. A pea plant, homoz ...
4. - UKZN Management Information
... Colour patterns in a species of tern is determined by one gene with three alleles. Alleles (M) and (U) are dominant and allele (i) is recessive to both. How many genotypes are possible in a flock of terns that contains all the possible combinations of these three alleles? ...
... Colour patterns in a species of tern is determined by one gene with three alleles. Alleles (M) and (U) are dominant and allele (i) is recessive to both. How many genotypes are possible in a flock of terns that contains all the possible combinations of these three alleles? ...
Ch16 Population Evolution
... 23 pairs of chromosomes can make 8.4 million gene combinations Crossing over causes differences in genes Gene shuffling doesn’t change the allele frequency Still have same # of alleles in population, but recombined ...
... 23 pairs of chromosomes can make 8.4 million gene combinations Crossing over causes differences in genes Gene shuffling doesn’t change the allele frequency Still have same # of alleles in population, but recombined ...
Worksheet #6: Epistasis Practice 1. In man, the gene D is necessary
... auditory nerve. In the absence of either of these factors, the individual is deaf (that is ee or dd make you deaf). Do the following crosses and give the phenotypic ratios for deafness. a. DDee x DdEe ...
... auditory nerve. In the absence of either of these factors, the individual is deaf (that is ee or dd make you deaf). Do the following crosses and give the phenotypic ratios for deafness. a. DDee x DdEe ...
Chromosomes & Heredity - Fox Valley Lutheran High School
... Linked genes do not undergo independent assortment Effects of Gene Linkage Morgan’s GgWw X ggww didn’t produce expected results See fig. 10-4: Gene for body color & wing size are linked Linkage Groups Packages of genes that tend to be inherited together These “packages” are homologous chromosomes ...
... Linked genes do not undergo independent assortment Effects of Gene Linkage Morgan’s GgWw X ggww didn’t produce expected results See fig. 10-4: Gene for body color & wing size are linked Linkage Groups Packages of genes that tend to be inherited together These “packages” are homologous chromosomes ...
word - marric
... 56. In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. What are the possible combinations of genes in the offspring of two red-eyed heterozygous flies (Rr)? 57. The appearance of an organism is its 58. In a two-factor cross between an individual with ...
... 56. In fruit flies, the gene for red eyes (R) is dominant and the gene for sepia eyes (r) is recessive. What are the possible combinations of genes in the offspring of two red-eyed heterozygous flies (Rr)? 57. The appearance of an organism is its 58. In a two-factor cross between an individual with ...
Genetic problems
... Every individual has two sets of chromosomes—one set from the father and one set from the mother. Our phenotype is the result of the interaction of the alleles on these two sets of chromosomes. The objectives of this exercise are to learn how to use the Punnett square to predict the probability that ...
... Every individual has two sets of chromosomes—one set from the father and one set from the mother. Our phenotype is the result of the interaction of the alleles on these two sets of chromosomes. The objectives of this exercise are to learn how to use the Punnett square to predict the probability that ...
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.