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If you have a plant with yellow seeds which express a dominant phenotype. How would you determine the plant's genotype?
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∙ 7y ago
Identify the genotype trait of the seed color is yellow or green?
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∙ 15y ago
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Is it easier to analyze genotype by observing phenotype in organisms with complete dominance or in organisms with incomplete dominance?
It is easier to analyze genotype by observing phenotype in organisms with incomplete dominance (also known as codominance), because in incomplete dominance the individual will show a specific phenotype for each situation, whether it is homozygous dominant, heterozygous, or homozygous recessive. For example, in flowers, such as the ones that Mendel studied, a homozygous dominant flower will be red, a homozygous recessive flower will be white, and a heterozygous flower will be pink. In complete dominance, a heterozygous will only express the dominant phenotype, as opposed to incomplete dominance, in which a heterozygous individual will express a phenotype that is representative of both of the dominant and recessive traits. Because heterozygous individuals in complete dominance express the dominant phenotype, it is hard to determine whether the genotype is homozygous dominant or heterozygous for the trait. Hope this helps!
Which occurrence is when an individual inherits a dominant gene but does not fully express the dominant phenotype?
Incomplete penetrance
In a case of simple dominance what is the height of a plant with the genotype Tt?
The plants will all express the dominant gene.
What is a term used to express the appearance of the gene causes tallness in pea plant as an example?
Not entirely sure what you meant on that one, but I'll try and answer it. Genes have a genotype and a phenotype. (spelling?) A genotype is the "official label for the gene" (i.e. Tt, TT, tt) and phenotype descibes the appearance (i.e. homozygous tall, heterozygous tall, heterozygous short...) Hope this helps!
Why phenotypes don't always express its entire genotype?
Phenotypes are the entirety of the observable traits. Genotypes are the instructions in the genetic code. Dominant alleles override the recessive alleles, making only the dominant alleles expressed.
Is it easier to analyze genotype by observing phenotype in organisms with complete dominance or in organisms with incomplete dominance?
It is easier to analyze genotype by observing phenotype in organisms with incomplete dominance (also known as codominance), because in incomplete dominance the individual will show a specific phenotype for each situation, whether it is homozygous dominant, heterozygous, or homozygous recessive. For example, in flowers, such as the ones that Mendel studied, a homozygous dominant flower will be red, a homozygous recessive flower will be white, and a heterozygous flower will be pink. In complete dominance, a heterozygous will only express the dominant phenotype, as opposed to incomplete dominance, in which a heterozygous individual will express a phenotype that is representative of both of the dominant and recessive traits. Because heterozygous individuals in complete dominance express the dominant phenotype, it is hard to determine whether the genotype is homozygous dominant or heterozygous for the trait. Hope this helps!
What is the differences between homozygous dominant and homozygous recessive and heterozygous?
A homozygous dominant genotype means that both alleles for a trait are dominant. A heterozygous genotype means that one allele is dominant and the other is recessive. A heterozygous genotype will express the dominant phenotype, not the recessive phenotype.
How does an organism's genotype determine its phenotype?
By transcribing the code, which is unique to each organism and general to that species, that builds the proteins that express the phenotype; the physiological and behavioral traits of organisms.
What is an organisms way to express its genotype?
No, the genotype is the genetic composition of the organism. On the other hand, the phenotype is the physical composition of the organism. For example, a gene that causes a bird's feathers to be black in color is the genotype and the phenotype is the actual observable of the black feathers.
Which occurrence is when an individual inherits a dominant gene but does not fully express the dominant phenotype?
Incomplete penetrance
What will happen if an organism has the dominant gene?
Dominant genes express themselves, phenotype depends upon genes .
In a case of simple dominance what is the height of a plant with the genotype Tt?
The plants will all express the dominant gene.
True or false defining hormone levels among sexes can cause a single genotype to express morre than one phenotype?
true
What gene is masked if it is paired with a dominant gene?
The different forms of a gene are called alleles. In Mendelian genetics, a gene has a dominant allele and a recessive allele. The dominant allele masks the recessive allele if present. So there are two possible dominant genotypes: homozygous dominant, in which both dominant alleles are present; and heterozygous, in which one allele is dominant and the other allele is recessive. The only way to express a recessive trait is to have the homozygous recessive genotype.
Whats the phenotype of a stronger allele?
The allele which have dominant genes or whose genes can express themselves in presence or its corresponding gene in F1 expressions is the strongest of two, allthough no whole allele is strongest but its part of gene which carry that ability
Differing hormone levels among sexes can cause a single genotype to express more than one what?
They can result in more than one phenotype.
Why are IA and IB alleles considered codominant?
The IA and IB alleles code for the A and B antigens on the membranes of erythrocytes. These two antigens can exist together, as in a person with the AB blood type. Since the two alleles can express their character simultaneously, they are considered codominant.
