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Genes code for all genetic physical traits, so allele combinations code everything from metabolism rate to pigment coloring. Everything from the shape of your fingernails to whether you're more likely to get Heart disease is an expression of an allele combination.

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14y ago
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5h ago

The external appearance of an organism, or its phenotype, is determined by the alleles present in its genotype. Alleles are different forms of a gene that can produce variations in traits such as color, shape, or behavior. The combination of alleles inherited from each parent influences the organism's physical characteristics.

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7y ago

The organism's genotype is the actual set of alleles present in its genes.

The organism's phenotype is the traits physically observed as a result of having a particular genotype.

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15y ago

This is a nonsense question, although it might appear like you know what you're asking. Get a dictionary out and check the meaning of "allele". If you don't get your answer, come back here.

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10y ago

what are the external pyhsical feature of an organism

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15y ago

pheonotype

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Q: What is the external appearance of an organism by which alleles are present?
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The external appearance of an organism as determined by what alleles are present is?

the phenotype. It is the physical expression of an organism's genetic makeup, influenced by the interaction of its genotype with environmental factors. It includes characteristics like color, size, shape, and other observable traits.


What type of alleles are present in an organism?

Capital letters usually denote dominant alleles. Therefore QQ genotype would contain two dominant alleles for the Q genotype.


The detectable traits of an organism as determined by what alleles are present is the what?

The physical trait exhibited by an organism's genes is called the phenotype. (As opposed to the genotype, which refers to the alleles themselves.)


What is the outward appearance in inheritance?

The outward appearance is usually called the phenotype. In contrast the alleles present in the cells is called the genotype.


When both dominant and recessive alleles are present within a single nucleus the organism is for the trait?

You are supposed to have 2 alleles in a single nucleus and if not there can be a disorder i believe.


Can you see all genetic variation?

No. Genotype is the combination of genes present in an organism. It consists of alleles whose visible characteristics is called phenotype. An organism's phenotype is visible and not the genotype as you just can't see a person and tell what kind of genes are present in the organism.


Is it true that recessive alleles are never present when dominant alleles are present?

No. They are present but not expressed (seen). Only the dominant alleles are expressed.


What type allele are present in an organism with a QQ genotype?

Capital letters usually denote dominant alleles. Therefore QQ genotype would contain two dominant alleles for the Q genotype.


What does hereditary constitution mean?

Hereditary constitution, also known as the genetic constitution isthe particular alleles at specified loci present in an organism.


What are dominant alleles?

Dominant alleles are genetic variants that are expressed when present in a single copy in an individual's genotype, masking the expression of a recessive allele. In a heterozygous individual (having two different alleles for a gene), the dominant allele will determine the phenotype. Dominant alleles are represented by a capital letter in genetic notation (e.g., A).


How do you use homozygous in a sentence?

An organism is homozygous for a particular gene when identical alleles of the gene are present on both homologous chromosomes. (see related link)


What are alleles that have an effect on an organisms phenotype?

The presence of more than two alleles for a trait is known as probility. There might be one which is dormant and the others which are recessive.