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Why would it be important to know the possible genotypic and phenotypic ratios of different genetic crosses?
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What are some of the phenotypic variations that are possible with codominance?
Blending or mixing of the colors is a phenotypic variation that is possible with co-dominance. Seeing both colors present at the same time is also possible.
What is the importance of a 9331 ratio in a monohybrid cross?
The phenotypic ratio expected from a monohybrid cross between heterozygotes is 3:1 (assuming complete dominance), with the genotypic ratio being 1:2:1. So, using tall = T, short = t and R = red, r = white as an example. A monohybrid cross of Tt X Tt would be expected to produce 3 tall plants and 1 short plant (phenotypic ratio 3:1), which would be 1 TT, 2 Tt and 1 tt (genotypic ratio 1:2:1). A dihybrid cross of heterozygotes is expected to produce a phenotypic ratio of 9:3:3:1. So the cross of TtRr X TtRr would be epected to have: 9 tall red, 3 tall white, 3 short red and 1 short white (phenotypic ratio) This is because each parent has 4 possible combinations of gametes (TR, Tr, tR and tr). There are therefore 16 combinations of gametes, providing a 9:3:3:1 phenotypic ratio. Both of these are probably best visualised using a punnett square (see link below).
How do you use a Punnett Square and what do they do?
A punnett square shows the possible outcomes of a certain trait based on the parents genes. To use the Punnett square, you put pairs of genes in the diagram and then determine the crosses that will come from those combinations. It is useful when dealing with hybrid and dihybrid crosses to determine the genotypic and phenotypic ratios.
Discussion of why adaptation is important for organisms to survive in an environment?
Adaptation is important for organisms to survive in an environment for various reasons. The environment posses different threats to different organisms and having these special features is what makes it possible to survive.
How Is it possible for the atoms of different elements to have the same mass numbers?
It is possible only because of different number of neutrons.
What do the boxes in a punnett square represent?
Each box contains a different possible outcome in a genetic cross.The boxes in a Punnett's Square represent the possible outcome of breeding two parent organisms to produce offspring. For example, if you breed a tall pea plant (Tt) with another tall pea plant (Tt), the possible genotypic results are 25% TT, 50% Tt, and 25% tt. The possible phenotypic results would be 75% tall and 25% short. The boxes themselves are the possible genotypic outcomes, from which you can deduce the phenotypic outcome.
What are some of the phenotypic variations that are possible with codominance?
Blending or mixing of the colors is a phenotypic variation that is possible with co-dominance. Seeing both colors present at the same time is also possible.
Each cell of a punnett square represents one possible?
genotypic
What a ratio?
A genotypic -ratio reflects the genetic configuration of an individual in the population. Several genotypes are possible in a phenotype and the ratio in which the genotypes segregate in a given phenotype is known as its genotypic ratio.
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.
What is the importance of a 9331 ratio in a monohybrid cross?
The phenotypic ratio expected from a monohybrid cross between heterozygotes is 3:1 (assuming complete dominance), with the genotypic ratio being 1:2:1. So, using tall = T, short = t and R = red, r = white as an example. A monohybrid cross of Tt X Tt would be expected to produce 3 tall plants and 1 short plant (phenotypic ratio 3:1), which would be 1 TT, 2 Tt and 1 tt (genotypic ratio 1:2:1). A dihybrid cross of heterozygotes is expected to produce a phenotypic ratio of 9:3:3:1. So the cross of TtRr X TtRr would be epected to have: 9 tall red, 3 tall white, 3 short red and 1 short white (phenotypic ratio) This is because each parent has 4 possible combinations of gametes (TR, Tr, tR and tr). There are therefore 16 combinations of gametes, providing a 9:3:3:1 phenotypic ratio. Both of these are probably best visualised using a punnett square (see link below).
How do you use a Punnett Square and what do they do?
A punnett square shows the possible outcomes of a certain trait based on the parents genes. To use the Punnett square, you put pairs of genes in the diagram and then determine the crosses that will come from those combinations. It is useful when dealing with hybrid and dihybrid crosses to determine the genotypic and phenotypic ratios.
When should you use punnett squares?
Punnett Squares are used to depict crosses of the parental or P generation and the possible offspring or F1 generation which can be formed from the traits being looked at which are represented by letters such as W for widow's peak, w for none, Y for yellow, y for green, so on and so forth. The diagrams depict the possibility of each offspring inheriting a specific/specific traits. Depending on the number of characteristics being looked at, the punnett square will range in size; the simplest is a 2x2 which states the possibility of offspring have 2 traits (2 traits of parents are being looked at; that is, whether or not parents have a characteristic/feature in relation to the possibility that their offspring will or will not). Ultimately, the outcomes depend on whether or not a trait is dominant, heterozygous, or recessive Dominant traits, represented by uppercase letters, generally overpowers the recessive traits which are represented by lowercase letters. Moreover, phenotypic and genotypic ratios can be found through Punnett Square crosses. Phenotypic ratios refer to the number of offspring with each specific physical characteristic/trait coded for by the different letter combinations and the genotypic ratios refer to the number of offspring with each different code. These ratios are separated by numbers and colons and begin at the top left corner of the square. Make sure to simplify if needed. For example: A homozygous dominant plant (RR) is crossed with a heterozygous round plant (Rr) --> RR x Rr RR x Rr: RR RR Rr Rr Phenotypic Ratio: 1 Round (100% chance of offspring being round) Genotypic Ratio: 1 RR: 1 Rr (50% chance of offspring being RR/Rr)
What is the difference between a monohybrid and dihybird cross?
monohybrid cross deals with one genotypic trait whereas the dihybrid cross deals with two traits being crossed to see the possible genotypes.
A woman who has type A blood marries a man with type B blood Their first child has type O blood What are the expected genotypic frequencies of all possible offspring that the parents can have?
ii, IAi, IBi, IAIB
1. Cattle can be red (CCR) and white (CWCW) and produces a roan color(CRCW) of offspring,a.) Predict the genotypic ratios of offspring if two roan color cattle arecrossedb.) What are the possible phenotypes of the offspring?
Pls answer this😭
Discussion of why adaptation is important for organisms to survive in an environment?
Adaptation is important for organisms to survive in an environment for various reasons. The environment posses different threats to different organisms and having these special features is what makes it possible to survive.
