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i am a 7th grader and to determine a ratio of phenotype or genotype what you need to do is make a punnett square to diagram the crosses ex: T=tall t=short so: for the punnett squars your outcome would be: TT, tT, Tt and tt . if you have any questions about the punnett squares look it up on Google. these are sex linked genes.

gene: factors or sequences of DNA formed to control traits. (btw i learned this in school)

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โˆ™ 2010-03-21 18:55:08
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Q: How do you determine the genotype and phenotype ratios of hybrid crosses using a forked line branch diagram AaBbCcxAaBBCCAaBBCcxaaBBCc AaBbCcxAaBbCc?
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Does phenotype determine genotype?

It is a false statement that "phenotype determines genotype". In fact, it is the opposite. A genotype is the genetics or "instructions" that determine the phenotype. The phenotype is the actual appearance, ex: blue eyes, that is created by a given genotype.


Can you accurately determine an organism's genotype by observing its phenotype?

No, genotype actually determines phenotype.


Is genotype the expression of a traits?

No. The expression of a trait is called a phenotype. Genotype is the set of genes that determine a phenotype.


How does the genotype affect the phenotype?

The genotype provides the 'instructions' which determine the phenotype. Of course, not all the genes are expressed as some are recessive.


What are the characteristics of phenotype?

A phenotype is the physical characteristics of an organism. It is determined by the genotype, so the characteristics are endless. You have to specifically know the genotype or the physical features to determine the phenotype


Is it possible to determine the genotype of a person showing a dominant phenotype?

NO, because a dominant phenotype could either be homozygous or a heterozygous.so unless you are sure about the genotype of parents we can't determine it...but we can determine the genotype of a person showing reccessive phenotype, as a recessive trait always expresses itself in a homozygous condition...


Can you determine an organisms genotype by observing its phenotype?

yes absolutely


What are punnett squares and why are they useful?

They determine the phenotype and genotype of the offspring.


Is it possible to determine the genotype of a person showing a recessive phenotype?

To have a recessive phenotype, you need two recessive alleles. So to have a recessive phenotype, you must have a genotype of bb. 2 recessive alleles


Why is it sometimes impossible to determine the genotype of an organism that has a dominant phenotype?

it is impossible because the phenotype and genotype are different this is out of chapter 10 in the biology book on page 336


How do you determine the genotype for the dominant phenotype?

Definitions: phenotype is the constellation of observable traits; genotype is the genetic endowment of the individual. Phenotype = genotype + development (in a given environment). To consider these in the context of evolutionary biology, we want to know how these two are related. In a narrow "genetic" sense, the genotype defines the phenotype. But how, in and evolutionary sense, does the phenotype "determine" the genotype? Selection acts on phenotypes because differential reproduction and survivorship depend on phenotype. If the phenotype affecting reproduction or survivorship is genetically based, then selection can winnow out genotypes indirectly by winnowing out phenotypes.


Phenotype determines genotype true of false?

Phenotype does not determine genotype. Actually a genotype includes an organisms entire hereditary information. A phenotype is simply the organisms actual observed properties including appearance, development and behavior.


How do determine someones phenotype?

the phenotype is what you see like for example DD is the genotype and homozygous dominant is the phenotype. Another example is phenotype Heterozygous round eyes or in genetic form Rr. Phenotype means what you see and Genotype is the gene. I hope this answers your question


Why do identical twins have the same phenotype?

They don't. Identical twins have the same genotype not phenotype. The Genotype is the DNA, but phenotypes determine physical features such as finger prints.


Is it possible to determine the genotype of a plant with a dominant phenotype the trait?

NO, because a dominant phenotype could either be homozygous or a heterozygous.so unless you are sure about the genotype of parents we can't determine it...but we can determine the genotype of a person showing reccessive phenotype, as a recessive trait always expresses itself in a homozygous condition..Read more: Is_it_possible_to_determine_the_genotype_of_a_person_showing_a_dominant_phenotype


Do mutations affect genotype or phenotype?

genotype always...phenotype sometimes


What is the relationship between the genotype and the phenotype of an organism?

The genotype determines the phenotype.


What genotype results in the same phenotype?

The genotype is the genes inherited. Phenotype is the expression of that genotype. Phenotype is determined by recessive, dominance, co-dominance.


What is the genotype if the phenotype is o?

a phenotype cant be o. phenotype is how something looks while the genotype is letters.


Can you accurately determine an organisims genotype by observing its phenotype?

Yes you can accurately determine an organisms genotype by observing it's phenotype, however some phenotypic traits resulting from homozygous or heterozygous combinations of alleles, may make the prediction impossible.


What is the meaning of genotype vs phenotype?

Genotype is the genetic makeup of an organism. Phenotype is the physical expression of that genotype


How can a testcross determine the unknown genotype an organism?

Because a test cross allows you to work out the problem to identify the genotype using the phenotype.


What phenotype is produced by AB genotype?

The AB phenotype is produced by the AB genotype.


How do you use genotype and phenotype in a sentence?

A genotype is what you have in your genes and a phenotype is what you see expressed.


Compare and contrast genotype and phenotype?

genotype is the genes and phenotype is when it is involved with the color