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Is it possible that two prokaryotic organisms show phenotypic similarities but do not share close evolutionary relatedness?
It is possible that two prokaryotic organisms may look alike, phenotypic similarities, but still have major genetic differences, genotypic dissimilarities, that would indicate that they are not closely related. For example if two prokaryotic organisms share 97% of their rRNA gene sequence then they are considered to have the probability of being in the same species. However, even if two prokaryotic organisms share less than 95% of their gene sequence then they will be considered a new species and therefore they would not be related even if 95% of their gene sequences match therefore not sharing close evolutionary relatedness.
Why are predicted ratios rarely the same as actual ratios?
Predicted ratios may differ from actual ratios due to the presence of confounding variables, measurement error, sampling variability, or the limitations of the statistical model used for prediction. These factors can introduce uncertainty and bias into the predictions, leading to discrepancies between the predicted and actual ratios.
A 9331 phenotypic ratio is characteristic of what?
A 9:3:3:1 phenotypic ratio is characteristic of a dihybrid cross where two genes are segregating independently and assorting according to Mendel's law of independent assortment. This ratio is expected when the genes are located on different chromosomes or are far apart on the same chromosome.
How can two plants have different genotypes having the same phenotype?
The simplest way that two plants can have different genotypes, but the same phenotype, is if they both have a dominant allele for the same trait. For example, the genotypes Pp and PP, will both produce the phenotype created by P (for example, pink coloured petals). This is because P is dominant to p, and will always be expressed. Other ways that the same phenotype can be created from different genotypes are when the environment affects the traits, or when the trait is controlled by more than one gene.
Why do traits that are controlled by genes on the same chromosome not always appear in the expected ratio in offspring?
I think this has something to do with "crossing over," but I do not remember the details. All I remember is that the allelle of one chromosome may overlap and switch with the allelle of another chromosome, which results in unexpected ratios of the genotypes and phenotypes of traits represented by genes that would normally be found on the same chromosome.
Why does the expected genotypic ratio differ from the expected phenotypic ratio?
The expected genotypic ratio differs from the expected phenotypic ratio because genotypes represent the actual genetic combinations (e.g., homozygous dominant, heterozygous, homozygous recessive), while phenotypes reflect the observable traits resulting from those genotypes. In cases where one allele is dominant over another, multiple genotypes can lead to the same phenotype. For example, in a monohybrid cross, the expected genotypic ratio might be 1:2:1 for the alleles, while the phenotypic ratio could be 3:1, as both homozygous dominant and heterozygous individuals display the same dominant phenotype.
Is it true that the first numbers in the 2 equivalent ratios will always have a common factor?
Yes, it is true that the first numbers in two equivalent ratios will always have a common factor. This common factor is known as the scale factor, which is used to create equivalent ratios by multiplying or dividing both parts of the ratio by the same number. This ensures that the ratios maintain the same proportionality.
What are the ratios that name the same comparison?
equivalent ratios are different ratios that name the same comparison
What are equivlent ratios?
when a number of ratios give the same answer after solving the ratios the ratios are said to be equivalent ratios
What are ratios that have same value?
Equivalent ratios.
What would be the offspring be if a roan cow and a white bull were bred together?
The offspring produced is dependent on chances. We can figure out the chances of the kind of offspring such a cross will get by using a Punnett square. Unfortunately the WYSIWYG format on this site will not allow for such a square, so we will give the ratio, the genotypic and phenotypic percentages that such a cross will receive. Let R = red, W = white and RW = roan. Roan cow (RW) x White bull (WW) Offspring: 2 RW : 2 WW Genotypic ratio: 50% roan and 50% white Phenotypic ratio: Same as above. Thus, the offspring of a roan cow crossed with a white bull (presumably of the same breed, being Shorthorn), may come out as white or roan. There is a 50% chance that either will occur.
What are ratios that name the same amount?
your answer simular ratios
What is equivalent ratios mean?
ratios that r the same
When two ratios have the same value?
When they are equivalent ratios.
What is two ratios that the same value?
Equivalent Ratios
What are ratios that are equal and simplify to the same ratio?
They are equivalent ratios.
What are two ratios that name the same number?
Two ratios that name the same number are 1:2 and 2:4. Both ratios represent the same relationship between the quantities, as they can be simplified to the same fraction, 1/2. This demonstrates that different ratios can express the same proportional relationship.
