GENETICS 310 Exam 1, Sept.25, 2012 NAME 1a) When a male
... 2. Place the letter of each example in the blank for the appropriate term or terms EXAMPLE TERM A. Drosophila larvae developing in the presence of ...
... 2. Place the letter of each example in the blank for the appropriate term or terms EXAMPLE TERM A. Drosophila larvae developing in the presence of ...
Continuous and discontinuous variation
... the two. Meiosis and sexual reproduction introduces variation (see Ch 1), through Independent assortment of the parental chromosomes; through Crossing-over during Prophase I; and through the random fertilisation that forms the zygote. ...
... the two. Meiosis and sexual reproduction introduces variation (see Ch 1), through Independent assortment of the parental chromosomes; through Crossing-over during Prophase I; and through the random fertilisation that forms the zygote. ...
HMIVT
... chromatids. Non-sister chromatids exchange segments at cross over site. Crossing over breaks up old combinations of alleles and puts new ones together in homologous chromosomes, mixes up maternal and paternal information about traits. ...
... chromatids. Non-sister chromatids exchange segments at cross over site. Crossing over breaks up old combinations of alleles and puts new ones together in homologous chromosomes, mixes up maternal and paternal information about traits. ...
Simulating Random Events in Evolution: Genetic Drift, Founder
... The current unit on Islands focuses instead on the mechanisms producing observed evolutionary change. We looked at evidence from finch beak sizes to evaluate natural selection as an evolutionary mechanism. Natural selection is considered a deterministic process, one that yields predictable results. ...
... The current unit on Islands focuses instead on the mechanisms producing observed evolutionary change. We looked at evidence from finch beak sizes to evaluate natural selection as an evolutionary mechanism. Natural selection is considered a deterministic process, one that yields predictable results. ...
Punnett Square Handout
... Sometimes this already done in the question for you. If the question says "Cross two organisms with the following genotype: Tt & tt", it's all right there in the question already. More likely is a question like this: "Cross a short pea plant with one that is heterozygous for tallness". Here, you hav ...
... Sometimes this already done in the question for you. If the question says "Cross two organisms with the following genotype: Tt & tt", it's all right there in the question already. More likely is a question like this: "Cross a short pea plant with one that is heterozygous for tallness". Here, you hav ...
Level 1 Science (90948) 2015
... Referring to the examples shown previously for shell pattern, explain the difference between an allele and a gene. ...
... Referring to the examples shown previously for shell pattern, explain the difference between an allele and a gene. ...
Set 2 - The Science Spot
... Use your knowledge of genetics to answer each question 1. What term refers to the physical appearance of a trait? Example: Yellow body color 2. What term refers to the gene that is expressed when two different genes for a trait are present in a gene pair? 3. If your grandparents are the parental ge ...
... Use your knowledge of genetics to answer each question 1. What term refers to the physical appearance of a trait? Example: Yellow body color 2. What term refers to the gene that is expressed when two different genes for a trait are present in a gene pair? 3. If your grandparents are the parental ge ...
10.6A I Like Your Genes - Texarkana Independent School District
... What is observed by biologists who examine offspring of the first-generation cross between plants that are homozygous dominant and homozygous recessive for height? (a) All first-generation plants will grow to medium height. (b) There will be three tall plants to each short plant in the first generat ...
... What is observed by biologists who examine offspring of the first-generation cross between plants that are homozygous dominant and homozygous recessive for height? (a) All first-generation plants will grow to medium height. (b) There will be three tall plants to each short plant in the first generat ...
Heredity - Monroe County Schools
... A. Body cells b. Sex cells c. New kinds of genes 6. What are formed during meiosis? A. Body cells b. Sex cells c. New kinds of genes ...
... A. Body cells b. Sex cells c. New kinds of genes 6. What are formed during meiosis? A. Body cells b. Sex cells c. New kinds of genes ...
Introduction to your genome
... mid-1900s: DNA is the genetic material • Griffith experiment (1928): showed bacteria can transfer genetic information • Avery-MacLeod-McCarty experiment (1944): showed that DNA was key component of Griffith’s experiment • Hershey-Chase experiment (1952): used radioactive labeling to show DNA, not p ...
... mid-1900s: DNA is the genetic material • Griffith experiment (1928): showed bacteria can transfer genetic information • Avery-MacLeod-McCarty experiment (1944): showed that DNA was key component of Griffith’s experiment • Hershey-Chase experiment (1952): used radioactive labeling to show DNA, not p ...
Midterm Key - Berkeley MCB
... and no Y chromosome. Explain what could have happened to generate this cat. Be specific. (5 points) Because the cat is black, it inherited its only X chromosome from its mother; we know from the previous question that the father is an orange cat. A nondisjunction event occurred during either meiosi ...
... and no Y chromosome. Explain what could have happened to generate this cat. Be specific. (5 points) Because the cat is black, it inherited its only X chromosome from its mother; we know from the previous question that the father is an orange cat. A nondisjunction event occurred during either meiosi ...
Mendels Genetics
... MODELING MENDEL’S LAWS A Punnett Square shows all the genotypes that could ...
... MODELING MENDEL’S LAWS A Punnett Square shows all the genotypes that could ...
Biology Homework: Genetics
... The percent albino should not change. If a plant is albino it contains 2 recessive genes. They will always show that phenotype. 5. Explain how it is possible for environment to influence or temporarily change the expression of a gene. Plants grown in the dark have the ability to be green, but ...
... The percent albino should not change. If a plant is albino it contains 2 recessive genes. They will always show that phenotype. 5. Explain how it is possible for environment to influence or temporarily change the expression of a gene. Plants grown in the dark have the ability to be green, but ...
Ch 11 Clicker Questions
... characters, such as pea shape and flower color. B. it is possible to control matings between different pea plants. C. it is possible to obtain large numbers of progeny from any given cross. D. peas have an unusually long generation time. E. many of the observable characters that vary in pea plants a ...
... characters, such as pea shape and flower color. B. it is possible to control matings between different pea plants. C. it is possible to obtain large numbers of progeny from any given cross. D. peas have an unusually long generation time. E. many of the observable characters that vary in pea plants a ...
Genetic Equilibrium: Human Diversity
... it is unreasonable to infer that a small population of only 10 alleles can support the same number of offspring in the next generation as the large population. Therefore, the number of diploid offspring in Part III has been proportionally reduced compared to the number of diploid offspring in Part I ...
... it is unreasonable to infer that a small population of only 10 alleles can support the same number of offspring in the next generation as the large population. Therefore, the number of diploid offspring in Part III has been proportionally reduced compared to the number of diploid offspring in Part I ...
Document
... •If one or more alleles are recessive, can’t distinguish between heterozygous and homozygous dominant individuals. •Use Hardy-Weinberg to calculate allele frequencies based on the number of homozygous recessive individuals. If q2 = 0.0043, then q = 0.065; p = 1 - q = 0.935 p2 = 0.8742, 2pq = 0.1216 ...
... •If one or more alleles are recessive, can’t distinguish between heterozygous and homozygous dominant individuals. •Use Hardy-Weinberg to calculate allele frequencies based on the number of homozygous recessive individuals. If q2 = 0.0043, then q = 0.065; p = 1 - q = 0.935 p2 = 0.8742, 2pq = 0.1216 ...
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.