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DNA is composed of long strings of nucleic acid sequences, but not all of them code for proteins. The ones that do are called genes. Alleles are different versions of a certain gene. For example, the gene that codes for blood type has 3 different alleles, A, B, and O. The genes that code for hair and eye color also have many different alleles.
A gene is a segment of DNA that codes for a functional product (i.e. a protein). An allele is an alternate version of a gene.
For example, in a gene that codes for fur colour in rabbits, the two alleles are B and b.
B and b are both versions of the same gene - but they may result in a different phenotype (physical trait).
Genes and alleles are related because alleles are inside a gene. Genes are made up by alleles. A gene is DNA. The allele is like piece of DNA inside a gene.
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The condition in which genotypes have identical alleles?
homologous
What information does a Punnett square provide?
Possible alleles in the gametes of the parents
What genotype is produced by the phenotype B?
Genotypes are not created by phenotypes, they are the alleles/genes of the organism. Genotypes (in combination with environment) produce phenotypes. It would be expected that the genotypes Bb and BB would produce the phenotype B.
How does a punnett square show genotype and phenotype?
A Punnett square is a visual representation of the possible genotypes resulting from a genetic cross. By combining the alleles of two parents, it shows the potential genotypes of their offspring. From these genotypes, one can infer the corresponding phenotypes based on the inheritance patterns of the alleles involved.
Why do you have more genotypes than phenotypes?
The number of possible genotypes is typically higher than the number of observable phenotypes because multiple genotypes can result in the same phenotype due to genetic variations, interactions, and environmental factors. Different combinations of genotypes and environmental influences can lead to similar outward traits, resulting in fewer distinct phenotypes than genotypes.
How are the genotype and phenotype of parents related to the genotype and phenotypes of offsprings?
The parents can pass on only the alleles of their genotypes to their offspring. Therefore, the offspring genotypes and phenotypes are dependent solely upon the alleles inherited from the parents.
Which genotypes have dominant phenotypes?
The genotypes in which one or more alleles is dominant.
For each phenotype give the genotypes that are possoble for Patrick?
Without knowing the specific phenotypes in question, it is difficult to provide exact genotypes for Patrick. However, genotypes result from the combination of alleles a person inherits from their parents. For example, if a phenotype is related to eye color, genotypes could include combinations of alleles for brown, blue, or green eye color. Patrick's genotypes would depend on the specific alleles he inherits for the given phenotype.
The condition in which genotypes have identical alleles?
homologous
What genotypes is heterozygous?
A heterozygous genotype, is the genetic makeup of different alleles.
What are multiple-allele traits?
Traits governed by multiple alleles are controlled by three or more alleles, rather than two. An example in humans is the ABO blood group system. There are three alleles in the ABO blood group system, IA, IB, IO. These three alleles can produce six genotypes, AA, AO, BB, BO, AB, OO. These genotypes can produce four different phenotypes, A (genotypes AA or AO), B (genotypes BB or BO), AB, (genotype AB) and O (genotype OO).
What information does a Punnett square provide?
Possible alleles in the gametes of the parents
How are the genotypes of parents related to the genotypes and phenotypes of the offspring?
alleles are variations of genes
What genotype is produced by the phenotype B?
Genotypes are not created by phenotypes, they are the alleles/genes of the organism. Genotypes (in combination with environment) produce phenotypes. It would be expected that the genotypes Bb and BB would produce the phenotype B.
How does a punnett square show genotype and phenotype?
A Punnett square is a visual representation of the possible genotypes resulting from a genetic cross. By combining the alleles of two parents, it shows the potential genotypes of their offspring. From these genotypes, one can infer the corresponding phenotypes based on the inheritance patterns of the alleles involved.
Why do you have more genotypes than phenotypes?
The number of possible genotypes is typically higher than the number of observable phenotypes because multiple genotypes can result in the same phenotype due to genetic variations, interactions, and environmental factors. Different combinations of genotypes and environmental influences can lead to similar outward traits, resulting in fewer distinct phenotypes than genotypes.
Which phenotype pairing can the genotypes of the individuals be directly known?
Codominance - when both alleles are expressed equally in an individual. This allows us to directly observe the genotypes of the individuals based on their appearance.
