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78KB - NZQA
78KB - NZQA

... any particular one will be randomly selected from paternal or maternal chromosomes (may use an example, eg 23 in humans). Independent assortment is the major source of the genetic variability of offspring. • Crossing over / recombination may or may not occur, and the probability of the recombination ...
Schedule
Schedule

... any particular one will be randomly selected from paternal or maternal chromosomes (may use an example, eg 23 in humans). Independent assortment is the major source of the genetic variability of offspring. • Crossing over / recombination may or may not occur, and the probability of the recombination ...
Population Genetics & Evolution
Population Genetics & Evolution

... • Gene flow - transport of genes by migrating individuals Genes are lost from the gene pool when an individual leaves a population; genes are added when an individual enters a population QuickTime™ and a decompressor are needed to see this picture. ...
File
File

...  Comparison of early stages of development among different organisms  Reveals homologies NOT visible in adult organisms  For example, all vertebrate embryos have, at some point in their development,  A tail posterior to the anus ...
Activity 1
Activity 1

Peas, Flies, and a Genetic Disorder or Two Genetics: Mendel and
Peas, Flies, and a Genetic Disorder or Two Genetics: Mendel and

... A single allele can have multiple effects: pleiotropic. Example: allele for coloration pattern in Siamese cats; the same allele results in crossed eyes—both result from the same protein. How Do Genes Interact? Epistasis: phenotypic expression of one gene is influenced by another gene. Example: coat ...
Power Point 3 - G. Holmes Braddock
Power Point 3 - G. Holmes Braddock

... Dominant conditions are expressed in individuals who have just one copy of the mutant allele. Affected individual's have one normal copy of the gene and one mutant copy of the gene. So their offspring has a 50% chance of inheriting the mutant allele. ...
Lecture 16 Quantitative Genetics III and The Consequences of Small
Lecture 16 Quantitative Genetics III and The Consequences of Small

... In: R. B. Primack. 1998. Essentials of Conservation Biology. Sinauer ...
NOTES: 14.1 -14.2 HUMAN HEREDITY
NOTES: 14.1 -14.2 HUMAN HEREDITY

... • Autosomal recessive disorder; • Absence of an enzyme to break down the amino acid phenylalanine • The accumulation of phenylalanine causes damage to the nervous system • By avoiding phenylalanine in the diet, affected infants can avoid the symptoms of the disorder ...
The Monk who loved peas
The Monk who loved peas

...  Monk, failed teacher, pea-lover, genetic genius  From growing peas, Mendel noticed that ...
Lecture 17 Quantitative Genetics III and The Consequences of Small
Lecture 17 Quantitative Genetics III and The Consequences of Small

... In: R. B. Primack. 1998. Essentials of Conservation Biology. Sinauer ...
Chapter 11 Study Guide 11.1 The Work of Gregor Mendel Lesson
Chapter 11 Study Guide 11.1 The Work of Gregor Mendel Lesson

... Fertilization is the process in which reproductive cells (egg from the female and sperm from the male) join to produce a new cell. A trait is a specific characteristic, such as (in peas) seed color or plant height. Mendel prevented self-pollination in the peas. He controlled fertilization so he coul ...
CHAPTER 14
CHAPTER 14

... • Most common lethal genetic disease in US • Common in Caucasians • Caused by lack of or defective membrane protein that pumps Cl- out of cells • striking one out of every 2,500 people of European descent • Increased secretions of mucus from pancreas and lungs ...
Mix It Up - WordPress.com
Mix It Up - WordPress.com

... A tongue-rolling woman who is taste-blind for PTC has a father who could not roll his tongue but could taste the PTC chemical. She marries a man who can taste PTC but cannot roll his tongue. His mother was taste-blind to the chemical. Show the possible children this couple could produce. Use a punne ...
Chapter Outline
Chapter Outline

... c. When blood testing can be conducted, DNA base sequencing is determined and compared to see if there are similarities in base sequencing with people who have the disease. d. However, this gene is only linked to the disease and is not the disease itself. e. More than one allele can occur on the sam ...
Genetics Notes
Genetics Notes

... answer using a Punnett square. ...
File
File

... Macroevolution- major biological changes that are clearly visible. Ex: Development of an entire new species ...
Mendelian (“Simple”) Genetics Chapter 11
Mendelian (“Simple”) Genetics Chapter 11

... g/blogs/guestblog/ 2012/08/03/mudsticks-especially-ifyou-are-gregormendel/ ...
Probability and Heredity 2013
Probability and Heredity 2013

... • Probability predicts what is LIKELY TO OCCUR…Not necessarily what will occur • Each event occurs INDEPENDENTLY ...
unit 7 overview: genetics
unit 7 overview: genetics

... 26. In pea plants, round seeds (R) are dominant to dented seeds (r). In a genetic cross of two plants; one that is homozygous dominant for the round seed shape trait and one that is homozygous recessive for the dented seed trait, what percent of the offspring should have dented seeds? ...
Ch 9 Fundamentals of genetics
Ch 9 Fundamentals of genetics

... Needed true breeding plants (pure; offspring always had same variant of trait as parent) Then crossed two true breeding plants for a single trait (one of each variant; one purple flowered and one white) This is the P generation: true-breeding parents Resulting generation called F1 generation F1 self ...
Natural Selection and Adaptations Vocabulary
Natural Selection and Adaptations Vocabulary

... 2. Have your child mix up the cards and try to match the correct definition with the correct vocabulary term. (A second chart can be printed to act as a key) ...
Inheritance
Inheritance

... in an heterozygous individual appears to affect the trait, that allele is called the dominant allele. The allele that does not appear to affect the trait is called the recessive allele The two alleles for a character segregate (separate) during the formation of ...
Mendel`s Theory
Mendel`s Theory

... Different versions of a gene are called alleles. An individual usually has two alleles for a gene, each inherited from a different parent. Individuals with the same two alleles for a gene are homozygous; those with two different alleles for a gene are heterozygous. The law of segregation states that ...
Hardy Weinberg
Hardy Weinberg

... • One mechanism for genetic change is mutation. • Environmental factors, such as radiation or chemicals, cause many mutations, but other mutations occur by chance. ...
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Inbreeding

Inbreeding is the sexual reproduction of offspring from the mating or breeding of individuals or organisms that are closely related genetically. By analogy, the term is used in human reproduction, but more commonly refers to the genetic disorders and other consequences that may arise from incestuous sexual relationships and consanguinity.Inbreeding results in homozygosity, which can increase the chances of offspring being affected by recessive or deleterious traits. This generally leads to a decreased biological fitness of a population (called inbreeding depression), which is its ability to survive and reproduce. An individual who inherits such deleterious traits is referred to as inbred. The avoidance of such deleterious recessive alleles caused by inbreeding, via inbreeding avoidance mechanisms, is the main selective reason for outcrossing. Crossbreeding between populations also often has positive effects on fitness-related traits.Inbreeding is a technique used in selective breeding. In livestock breeding, breeders may use inbreeding when, for example, trying to establish a new and desirable trait in the stock, but will need to watch for undesirable characteristics in offspring, which can then be eliminated through further selective breeding or culling. Inbreeding is used to reveal deleterious recessive alleles, which can then be eliminated through assortative breeding or through culling. In plant breeding, inbred lines are used as stocks for the creation of hybrid lines to make use of the effects of heterosis. Inbreeding in plants also occurs naturally in the form of self-pollination.
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