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Ch. 9 Patterns of Inheritance
Ch. 9 Patterns of Inheritance

... Many genes have more than two alleles in the population  Although an individual can at most carry two different alleles for a particular gene, more than two alleles often exist in the wider population.  Human ABO blood group phenotypes involve three alleles for a single gene.  The four human blo ...
Slide 1
Slide 1

Genetics_Discussion
Genetics_Discussion

... A family history that shows how a trait is inherited over several generations Helps to track down the carriers (heterozygotes) of recessive disorders. Reading Pedigrees A shaded box – ...
EPISTASIS
EPISTASIS

... 3. Skin color in humans is determined by a polygenic inheritance system, possibly involving involving as many as 9 genes. For simplicity let’s consider the influence of 3 genes: A, B, and C, where the dominant allele darkens skin color. Suppose a women who is AABbCc mates with a man who is AaBbcc. A ...
inheritances of leaf rust resistance in six wheat crosses
inheritances of leaf rust resistance in six wheat crosses

TALL
TALL

... many tails would you expect to get? Working with a partner, have one person toss a coin •ten times while the other person tallies the results on a sheet of paper. Then, switch tasks to produce a separate tally of the second set of 10 tosses. ...
4. What is the difference between open-pollinated varieties
4. What is the difference between open-pollinated varieties

... Bio-dynamic (BD) farming is a specific way of farming within organic agricultural movement that has its own vision and has additional rules in addition to those of organic farming. For bio-dynamic farming the development of an open-pollinated variety is the most natural way of breeding. No artific ...
biology i honors capacity matrix unit vii: genetics
biology i honors capacity matrix unit vii: genetics

... two genes for each trait, one on the maternal chromosome and one on the paternal chromosome.  The two genes may be of the same form or they may be of different forms. o These forms produce the different characteristics of each trait. For example, a gene for plant height might occur in a tall form a ...
Pedigree Analysis
Pedigree Analysis

14_DetailLectOut
14_DetailLectOut

... Pea plants have several advantages for genetic study. o Pea plants are available in many varieties that have distinct heritable features, or characters, with different variant traits. o Peas have a short generation time; each mating produces many offspring. o Mendel was able to strictly control the ...
Anatomy and Physiology Genetic Unit
Anatomy and Physiology Genetic Unit

Chapter 14: Mendel and the Gene Idea
Chapter 14: Mendel and the Gene Idea

Co-Incomplete & Sex
Co-Incomplete & Sex

... from bruises or bumps. males because it is More common in ______ _____________ TWO recessive X-linked, but females with ______ hemophilia alleles will also show the trait. ...
Mendel`s Experiments
Mendel`s Experiments

... The F1 plants have 1 dominant gene and 1 recessive gene, but only show the dominant trait. That’s because the dominant gene masks (covers up) the recessive gene. When the F1 plants became parents they were able to have some offspring that showed the recessive trait. How is this possible? If the offs ...
Genetics Problems
Genetics Problems

... What evidence for linkage is shown in this cross? Give the percentage of recombination and the. map distance between the genes. 29. In Drosophila melanogaster, the genes for bristle shape and for eye color are known to be about 20 units apart on the same chromosome. Individuals homozygous dominant f ...
Chapter 14
Chapter 14

... carbohydrates to red blood cells: IA, IB, and i. • The enzyme encoded by the IA allele adds the A carbohydrate, whereas the enzyme encoded by the IB allele adds the B carbohydrate; the enzyme encoded by the i allele adds neither ...
Inheritance, Genes, and Chromosomes
Inheritance, Genes, and Chromosomes

... changes in the genetic material. The allele present in most of the population is called the wild type. Other alleles are mutant alleles. Wild-type and mutant alleles reside at the same locus (specific position on a chromosome). A genetic locus is polymorphic if the wild-type allele is present less t ...
What makes us human?
What makes us human?

... Human Traits • A pedigree chart, which shows the relationships within a family, can be used to help determine how genetic disorders are inherited. • Many human traits are polygenic (controlled by many genes) • Environmental effects on gene expression are not inherited; genes are. ...
Chapter 7: Human Genetics - Father Michael McGivney
Chapter 7: Human Genetics - Father Michael McGivney

lorenzo-genetics
lorenzo-genetics

... The X and Y chromosomes contain genetic instructions to different parts of the body and it is the Y chromosome that contains genes for male characteristics. Thus, if the X chromosome contributed by the mother of a male child has a recessive allele for a particular characteristic, it will be expresse ...
Genetics Power Point - Panhandle Area Educational Consortium
Genetics Power Point - Panhandle Area Educational Consortium

... A Dihybrid cross involves two traits. • Mendel’s dihybrid crosses with heterozygous plants yielded a 9:3:3:1 phenotypic ratio. • Mendel’s dihybrid crosses led to his second law, the law of independent assortment. • The law of independent assortment states that allele pairs separate independently o ...
Jeopardy - Mahtomedi Middle School
Jeopardy - Mahtomedi Middle School

... Perry the Platypus met Pinky the Platypus at the park. Perry is homozygous for his teal-green color. Pinky is heterozygous for her pink color. What are the genotypes of the parents? ...
1 - Section of population genetics
1 - Section of population genetics

...  An allele is subject to negative frequency dependent selection if a rare allelic variant has a selective advantage.  For example, the parasite should adapt to the most common host genotype, because it can then infect a large number of hosts.  In turn, a rare host genotype may then be favored by ...
CHAPs 10, 11 Rev
CHAPs 10, 11 Rev

... a. All of his daughters b. Half of his daughters c. Half of his sons d. All of his sons e. All of his children Colorblindness is more common in men than in women because: a. Men have only one X chromosome b. The gene is located on the Y chromosome c. Women cannot inherit the gene from their fathers ...
Jeopardy - Mahtomedi Middle School
Jeopardy - Mahtomedi Middle School

... Perry the Platypus met Pinky the Platypus at the park. Perry is homozygous for his teal-green color. Pinky is heterozygous for her pink color. What are the genotypes of the parents? ...
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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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