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What is a pea plant with two tall genes said to be?
A pea plant with two tall genes is said to be homozygous for the tall trait, specifically represented as "TT." In genetics, homozygous means that the organism has two identical alleles for a particular trait. In this case, the plant will consistently express the tall phenotype when bred, as both alleles contribute to that characteristic.
Using the terms dominant recessive explain the difference between genotype and phenotype?
No, I think you have your terms confused.The terms "dominant" and "recessive" are applied to alleles of a genotype. A genotype is an expression (using upper- and lower-case letters) that shows what alleles an organism has for a particular locus. The two alleles (in most cases) inherited (one from mother and one from father) can either be dominant or recessive. The recessive allele is not fully expressed in the presence of the dominant allele and is only expressed when there are two recessive alleles. The genotype could be called "recessive" I suppose if the genotype is homozygous recessive. But remember that two recessive alleles as a genotype is only one possibility - in which case you can't say the "genotype is recessive".The phenotype is dependent on the genotype. If present, the dominant alleles (in simple Mendelian genetics) will determine the phenotype - what the organism's trait or characteristic is. The phenotype will never be what is coded by the recessive allele unless the genotype is two recessive alleles.
Is it true that multiple alleles can be studied only individuals?
Multiple alleles refers to there being more than two alleles for a particular trait. Incomplete dominance is when one allele does not completely mask another (as is usually the case in simple Mendelian inheritance) but instead the two traits are expressed equally. For example, if a red cow (RR) mates with a white cow (WW), their offspring will not be white and red, but a mixture of the two colors roan (RW). That is incomplete dominance.
What are organisms that have two different alleles?
When you have two identical alleles you are said to be homozygous for that particular trait. If the trait is dominant, then you are homozygous dominant. If the trait is recessive, then you are homozygous recessive.
Is a case of genetic drift in which rare alleles or combinations of alleles occur in higher frequencies in a population isolated from the general population?
Yes, this phenomenon is known as the "founder effect," a type of genetic drift. It occurs when a small group of individuals becomes isolated from a larger population, leading to a limited gene pool. Rare alleles or combinations of alleles can become more common in the new population due to the reduced genetic diversity and the random nature of allele frequency changes over generations. This can significantly impact the genetic structure of the isolated population.
What is a pea plant with two tall genes said to be?
A pea plant with two tall genes is said to be homozygous for the tall trait, specifically represented as "TT." In genetics, homozygous means that the organism has two identical alleles for a particular trait. In this case, the plant will consistently express the tall phenotype when bred, as both alleles contribute to that characteristic.
Using the terms dominant recessive explain the difference between genotype and phenotype?
No, I think you have your terms confused.The terms "dominant" and "recessive" are applied to alleles of a genotype. A genotype is an expression (using upper- and lower-case letters) that shows what alleles an organism has for a particular locus. The two alleles (in most cases) inherited (one from mother and one from father) can either be dominant or recessive. The recessive allele is not fully expressed in the presence of the dominant allele and is only expressed when there are two recessive alleles. The genotype could be called "recessive" I suppose if the genotype is homozygous recessive. But remember that two recessive alleles as a genotype is only one possibility - in which case you can't say the "genotype is recessive".The phenotype is dependent on the genotype. If present, the dominant alleles (in simple Mendelian genetics) will determine the phenotype - what the organism's trait or characteristic is. The phenotype will never be what is coded by the recessive allele unless the genotype is two recessive alleles.
What does a lower case letter of an allele refer mean?
A lower case letter for an allele typically indicates a recessive trait. In genetics, alleles are alternate forms of a gene that can produce different effects on an organism's phenotype. The convention of using lower case letters for recessive alleles helps distinguish them from dominant alleles, which are usually represented by capital letters.
Is it true that multiple alleles can be studied only individuals?
Multiple alleles refers to there being more than two alleles for a particular trait. Incomplete dominance is when one allele does not completely mask another (as is usually the case in simple Mendelian inheritance) but instead the two traits are expressed equally. For example, if a red cow (RR) mates with a white cow (WW), their offspring will not be white and red, but a mixture of the two colors roan (RW). That is incomplete dominance.
Identical alleles AAA or AAA?
Since they are capital letters they stand for a dominant allele. Both the letters stand for a different trait. This is saying these two different organisms were dominant in those specific traits.
What are organisms that have two different alleles?
When you have two identical alleles you are said to be homozygous for that particular trait. If the trait is dominant, then you are homozygous dominant. If the trait is recessive, then you are homozygous recessive.
Is statistic a measure that describes a population characteristic?
Not necessarily.For instance, one can calculate a so-called 't' statistic as a way of testing an hypothesis about one or two population means. Notice that in this case the statistic does not describe a population characteristic.
Is a case of genetic drift in which rare alleles or combinations of alleles occur in higher frequencies in a population isolated from the general population?
Yes, this phenomenon is known as the "founder effect," a type of genetic drift. It occurs when a small group of individuals becomes isolated from a larger population, leading to a limited gene pool. Rare alleles or combinations of alleles can become more common in the new population due to the reduced genetic diversity and the random nature of allele frequency changes over generations. This can significantly impact the genetic structure of the isolated population.
What is the difinition of alleles?
An allele is a form of a gene. For example, the allele B may lead to black fur and the allele b may lead to white fur. Both B and b are alleles for fur colour.In general notation, dominant alleles are written with a capital letter (eg. B, T, P) and recessive alleles are written with a lower case letter (eg. b, t, p). A person will have two alleles (one from each parent) for every gene. Dominant alleles are expressed over recessive alleles.
How dominant and recessive alleles are represented in a Punnett Square?
Dominant alleles are written in upper case (i.e, 'A'), while recessive alleles are lower case (i.e, 'a')
Is A heterozygous pair of alleles is identical?
When there are heterozygous alleles for a gene thy code for a different expression of the gene. For example, the gene to taste PTC paper is a single gene trait. A person will have two copies (or alleles) for that gene (one from their mothers DNA, one from their father). There are two possible expressions for this gene - either you can taste the chemical or you cannot. When one allele is for tasting, and the other for not tasting, this is known as heterozygous. Both alleles are relating to the same gene but they giving different instructions and are thus not identical. When this happens, the dominant gene wins - in this case tasting is expressed. If the alleles are identical, they are known as homozygous and they are identical.
How are dominant and recessive represented in a punnett square?
Dominant alleles are written in upper case (i.e, 'A'), while recessive alleles are lower case (i.e, 'a')
