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FAMOUS SCIENTISTS
FAMOUS SCIENTISTS

Micro Lab Unit 1 Flashcards
Micro Lab Unit 1 Flashcards

... 37) What formula is used to determine the number of gamets that are required for dihybrid crosses? 38) In the above formula (to determine the number of gamets that are required for dihybrid crosses) n = the number of allelic pairs that are____________. 39) An individual is _____________ if N=0, and ...
Modern Theory of Evolution
Modern Theory of Evolution

...  It was later indicated that recombination during sexual reproduction and migration are also important factors. ...
E1. Mexican hairless dogs are heterozygous for a dominant allele
E1. Mexican hairless dogs are heterozygous for a dominant allele

... E1. Mexican hairless dogs are heterozygous for a dominant allele that is lethal when homozygous. In a cross between two Mexican hairless dogs, we expect 1/4 to be normal, 1/2 to be hairless, and 1/4 to die. E2. Chinchilla 1 is heterozygous c chc. Chinchilla 2 is heterozygous c chc h. Chinchilla 3 is ...
population
population

... Observation: the 2nd generation shows all traits from the initial generation 0 even though the parents in generation 1 do not show all traits. Conclusion: Generation 1 must receive some information that causes this “hidden” trait to be revealed in generation 2, in addition to the traits of generatio ...
Genetic problems
Genetic problems

... Huntington’s Disease—Individuals with Huntington’s disease have massive degeneration of the basal nuclei in the brain leading to wild involuntary movements and progressing to dementia and death. This disease is caused by repeats of the CAG codons near the end of chromosome 4. Perhaps 1 in 24,000 ind ...
Document
Document

... E1. Mexican hairless dogs are heterozygous for a dominant allele that is lethal when homozygous. In a cross between two Mexican hairless dogs, we expect 1/4 to be normal, 1/2 to be hairless, and 1/4 to die. E2. Chinchilla 1 is heterozygous c chc. Chinchilla 2 is heterozygous c chc h. Chinchilla 3 is ...
Ch 14 summary - OHS General Biology
Ch 14 summary - OHS General Biology

... o In the flower-color example, the F1 plants inherited a purple-flower allele from one parent and a white-flower allele from the other. o The plants had purple flowers because the allele for that trait is dominant. 4. Mendel’s law of segregation states that the two alleles for a heritable character ...
11-2 - Cloudfront.net
11-2 - Cloudfront.net

... –Tall, short ...
Early Beliefs and Mendel
Early Beliefs and Mendel

... seeds (peas), while others produce yellow seeds. Some plants are tall, while others are short. Mendel also noticed different flower positions on the stem and different flower colours. The fact that there were only two ways for each trait to be expressed would make it easy to see which traits had bee ...
Chapter 14 notes
Chapter 14 notes

... o In the flower-color example, the F1 plants inherited a purple-flower allele from one parent and a white-flower allele from the other. o The plants had purple flowers because the allele for that trait is dominant. 4. Mendel’s law of segregation states that the two alleles for a heritable character ...
Genetics Packet
Genetics Packet

... 22.  Hemophilia is a sex‐linked trait. A person with hemophilia is lacking certain proteins that are necessary for normal blood  clotting. Hemophilia is caused by a recessive allele so use “N” for normal and “n” for hemophilia. Since hemophilia is  sex‐linked, remember a woman will have two alleles  ...
Pedigree Genotyping - Wageningen UR E
Pedigree Genotyping - Wageningen UR E

... hampers their full exploitation in commercial breeding programs. These markers have usually been identified in one single cross. Consequently, only one or two favourable alleles of the related QTL are identified and exploitable for markerassisted breeding (MAB), whereas a breeding program may includ ...
Packet 6 Genetics F16
Packet 6 Genetics F16

... Notes: Polygenic Inheritance Polygenic Traits are controlled by the interaction of more than one gene. In humans, there are several obvious examples of polygenic traits such as hair color, eye color, height and skin tone. Traits that are polygenic tend to show great degrees of variation. o Skin col ...
Questions
Questions

... (i) Complete the sentence by putting a cross ( ) in the box next to your answer. The person with the most growth between 10 and 18 years had a daily diet containing ...
doc Summer 2010 Lecture 2
doc Summer 2010 Lecture 2

... o excrete salt in larger than normal quantities lungs and GI: because of salinity problems  mucous buildup in lungs that won’t come out of lungs o bacteria stay in mucous single gene causes disease (CFTR) can look at pedigrees to determine autosomal recessiveness: o see 2 parents without trait, but ...
AY1011 A101 6P P12 My Parents and I
AY1011 A101 6P P12 My Parents and I

... • His parents must have the following : Father ...
7 POPULATION GENETICS
7 POPULATION GENETICS

... become fixed (frequency=1) unless it is opposed by mutation pressure (in which case it will have a frequency close to, but slightly less than 1). However, if the heterozygote fitness is greater than the fitness of either homozygote, both alleles will be maintained at high frequency by selection. In ...
Understanding mismarks
Understanding mismarks

Biology 4154/5154
Biology 4154/5154

... heterozygosity as populations becomes more inbred over time. This can lead to expression of deleterious alleles. In genetic drift, by chance an allele may become lost or fixed, resulting in a decline in genetic diversity and a loss of heterozygosity as well. 3. (6 pts) a) Explain the steps in the pr ...
Applied Animal Breeding and Gene
Applied Animal Breeding and Gene

... similarity among individuals within an inbred line increases as the amount of inbreeding increases especially if there is directional selection. Parents homozygote for many pairs of genes will have more offspring that are more alike genetically than parents that are heterozygous for several of genes ...
Alien Genetics Project Directions
Alien Genetics Project Directions

... Draw the baby that would result for each of the traits based on the crosses you did. You may create ANY possibility that comes out of the genetic crosses you do. (20 points) o For example, if your Punnett Square states that the offspring could have 2 arms or many arms YOU can pick which the baby has ...
LPM 502 - Fiji National University | E-Learning Platform
LPM 502 - Fiji National University | E-Learning Platform

Laws of Inheritance
Laws of Inheritance

... in the monohybrid cross contributed one of two paired unit factors to each offspring, and every possible combination of unit factors was equally likely. The results of Mendel’s research can be explained in terms of probabilities, which are mathematical measures of likelihood. The probability of an e ...
Phenotypic Variance
Phenotypic Variance

... Heritability does not indicate the degree to which a characteristic is genetically determined An individual does not have heritability There is no universal heritability for a characteristic Even when heritability is high, environmental factors may influence a characteristic Heritabilities indicate ...
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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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