Genetic Crosses
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Complete Dominance
Complete Dominance is when the dominant allele completely covers up the recessive allele.
The principle of complete dominance determines specific traits and combinations because if you have blue eyes for example that was dominant and it completely covered the recessive one.
Parental allele combinations for monohybrid depend on the trait. For example, hair color. You have a parent with blond hair and a parent with black hair. Those 2 genes cross and the dominant one, black, will determine your hair color. Monohybrid cross shows that cross between black and blond produces black. Parent allele combinations for dihybrid depends on traits also. Let’s say hair and eye color. This one differs in 2 traits. You can have many combinations but one trait will always be dominant like black hair and brown eyes. A dihybrid cross is between two different traits.
Complete Dominance is when the dominant allele completely covers up the recessive allele.
The principle of complete dominance determines specific traits and combinations because if you have blue eyes for example that was dominant and it completely covered the recessive one.
Parental allele combinations for monohybrid depend on the trait. For example, hair color. You have a parent with blond hair and a parent with black hair. Those 2 genes cross and the dominant one, black, will determine your hair color. Monohybrid cross shows that cross between black and blond produces black. Parent allele combinations for dihybrid depends on traits also. Let’s say hair and eye color. This one differs in 2 traits. You can have many combinations but one trait will always be dominant like black hair and brown eyes. A dihybrid cross is between two different traits.
Mendelian and Non Mendelian InheritanceMendelian traits in humans concerns how in mendelian inheritance a child receiving a dominant allele from either parent will have the dominant form of a characteristic or phenotype. Non-mendelian inheritance is a general term that refers to any pattern of inheritance in which traits don’t segregate in accordance with Mendel’s laws. They differ in accordance of traits. Mendelian receives dominant but non-mendelian does not work according to dominant and recessive traits.
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Monohybrid and dihybrid CrossesPossible combinations of genetics for monohybrid depends on traits. Geno and phenotype ratios can be determined in different patterns and does not guarantee offspring’s traits. Possible combinations of genetics for dihybrid also depends on the traits. Where the dominant version if different from the recessive version.
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Impact on Our SpeciesDifferent genetic combinations illustrate how genetics impact the evolution of a species by being diverse. Overtime you receive certain traits from your parents but they change throughout lifespan. Everyone is different just like our species.
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Incomplete Dominance:
Incomplete Dominance is a form of intermediate inheritance in which one allele for a specific trait is not completely expressed over its paired allele. This results in a third phenotype in which the expressed physical trait is a combination of the phenotypes of both alleles.
Incomplete Dominance is a form of intermediate inheritance in which one allele for a specific trait is not completely expressed over its paired allele. This results in a third phenotype in which the expressed physical trait is a combination of the phenotypes of both alleles.
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Codominace:
is defined as a type of non mendelain inheritance pattern that finds the traits expressed by the alleles to be equal in the phenotype. There is neither a complete dominance or incomplete dominance of one trait over the other for that given characteristic. Codominance would show both alleles equally instead of a blending of the traits as is seen in incomplete dominance.
is defined as a type of non mendelain inheritance pattern that finds the traits expressed by the alleles to be equal in the phenotype. There is neither a complete dominance or incomplete dominance of one trait over the other for that given characteristic. Codominance would show both alleles equally instead of a blending of the traits as is seen in incomplete dominance.
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Monohybrid Crosses:
Is a cross between both parents but with one specific trait. The offspring will most likely receive the dominant allele and the recessive one will be hidden. The traits could be anything from hair color to eye color.
Is a cross between both parents but with one specific trait. The offspring will most likely receive the dominant allele and the recessive one will be hidden. The traits could be anything from hair color to eye color.
![Picture](/uploads/6/4/7/7/64773037/8167838_orig.jpg)
Multiple Alleles:
Multiple alleles is a type of non mendelian inheritance pattern that involves more than just the typical two alleles that usually code for a certain characteristic in a species. With multiple alleles, that means there is more than two phenotypes available depending on the dominant or recessive alleles that are available in the trait and the dominance pattern the individual alleles follow when combined together.
Multiple alleles is a type of non mendelian inheritance pattern that involves more than just the typical two alleles that usually code for a certain characteristic in a species. With multiple alleles, that means there is more than two phenotypes available depending on the dominant or recessive alleles that are available in the trait and the dominance pattern the individual alleles follow when combined together.
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Sex linked Traits:
Sex-linked traits are genetic characteristics determined by genes, which are located on sex chromosomes. Genes are segments of DNA found on chromosones that carry information for protein production and that are responsible for the inheritance of specific traits. Genes exist in alternative forms called slleles. One allele for a trait is inherited from each parent. Like traits originating from genes on autosomes (non-sex chromosomes), sex-linked traits are passed from parents to offspring through sexual reproduction.
Sex-linked traits are genetic characteristics determined by genes, which are located on sex chromosomes. Genes are segments of DNA found on chromosones that carry information for protein production and that are responsible for the inheritance of specific traits. Genes exist in alternative forms called slleles. One allele for a trait is inherited from each parent. Like traits originating from genes on autosomes (non-sex chromosomes), sex-linked traits are passed from parents to offspring through sexual reproduction.
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Mendelian Inheritance:
Mendelian Inheritance is a set of rules about genetic inheritance
The basic rules of genetics were first discovered by a monk named Gregor Mendel in the 1850s, and published in 1866. For thousands of years, people had noticed how traits are inherited from parents to their children. However, Mendel's work was different because he did experiments on plants, and designed those experiments very carefully.
In his experiments, Mendel studied how traits were passed on in pea plants. He started his crosses with plants that bred true, and counted characters that were either/or in nature (either tall or short). He bred large numbers of plants, and expressed his results numerically. He used test crosses to reveal the presence and proportion of recessive characters.
Mendelian Inheritance is a set of rules about genetic inheritance
The basic rules of genetics were first discovered by a monk named Gregor Mendel in the 1850s, and published in 1866. For thousands of years, people had noticed how traits are inherited from parents to their children. However, Mendel's work was different because he did experiments on plants, and designed those experiments very carefully.
In his experiments, Mendel studied how traits were passed on in pea plants. He started his crosses with plants that bred true, and counted characters that were either/or in nature (either tall or short). He bred large numbers of plants, and expressed his results numerically. He used test crosses to reveal the presence and proportion of recessive characters.