How Many Different Phenotypes Are Possible

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How Many Different Phenotypes Are Possible?

There are three common alleles in the ABO system. These alleles segregate and assort into six genotypes as shown in Table 1. As Table 1 indicates only four phenotypes result from the six possible ABO genotypes.

How many phenotypes are possible?

A fetus receives one of these three alleles from each of its parents. This produces four possible phenotypes (blood types) and six possible genotypes.

How do you determine the number of different phenotypes?

There is a range of phenotypes but most of the offspring are similar in color to the parents. If n = the number of gene pairs then (2n + 1) will determine the total number of categories of phenotypes.

How many different genotypes and phenotypes are possible?

With alleles ‘A’ and ‘a’ there are three possible genotypes AA Aa and aa. With three alleles 1 2 3 there are six possible genotypes: 11 12 13 22 23 33.

How many different phenotypes are possible for offspring?

Figure 13: The possible genotypes for each of the four phenotypes. Even though only four different phenotypes are possible from this cross nine different genotypes are possible as shown in Figure 13.

How many possible genotypes are possible for ABO blood groups?

A description of the pair of alleles in our DNA is called the genotype. Since there are three different alleles there are a total of six different genotypes at the human ABO genetic locus. The different possible genotypes are AA AO BB BO AB and OO.

How many phenotypes are possible in a Trihybrid cross?

There are 27 different genotypes possible in trihybrid cross hence its genotypic ratio is not mentioned.

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How many phenotypes and genotypes are possible in f2 generation?

Phenotypes-4 Genotypes-9.

How many phenotypic and genotypic classes are possible in progeny?

8 Phenotypes and 27 Genotypes.

How many genotypes are possible with 5 alleles?

Can two organisms have different phenotypes but the same genotype?

Due to the presence of a dominant allele the same phenotype but distinct genotype is possible. … The other allele is known as recessive when a dominant allele is entirely dominant over another allele. Recessive alleles only demonstrate their effect if the individual has two copies of the alleles.

What are the differences between genotypes and phenotypes?

The genotype is a set of genes in the DNA which are responsible for the unique trait or characteristics. Whereas the phenotype is the physical appearance or characteristic of the organism. Thus we can find the human genetic code with the help of their genotype.

Can AA and SS marry?

AC is rare whereas AS and AC are abnormal. Compatible genotypes for marriage are: AA marries an AA. … And definitely SS and SS must not marry since there’s absolutely no chance of escaping having a child with the sickle cell disease.

How many different phenotypes are possible in a one gene three allele system that displays Codominance to each other?

the interaction of three alleles and codominance resulting in four different phenotypes.

What is the probability of getting DD offspring?

So for parents who both have genotype Dd there is a 25% probability that their offspring is DD a 25% probability that the offspring is dd and a 50% probability that the offspring is Dd.

What are the phenotypic and genotypic ratios?

The phenotypic ratios are the ratios of visible characteristics. The genotypic ratios are the ratios of gene combinations in the offspring and these are not always distinguishable in the phenotypes.

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How is it possible to have 6 different genotypes and 4 phenotypes?

There are three alleles involved A B and O and six possible genotypes: AA BB OO AB AO and BO. The various genotypes result in four different phenotypes or blood types: A B O and AB. Individuals have blood type A if their genotypes are AA or AO.

How many types of genotypes and phenotypes respectively are possible in the ABO blood group system in human beings a 4/6 B 6 4 C 3 2 D 2 3?

So the correct answer is B 6 genotypes and 4 phenotypes.

What are the 3 types of genotypes?

There are three types of genotypes: homozygous dominant homozygous recessive and hetrozygous.

What is the phenotype of Trihybrid cross?

a trihybrid cross yields a phenotypic ratio of 27:9:9:9:3:3:3:1. This reflects the phenotypes generated by the 64 genotypic combinations resulting from 8 different male gametes fertilizing 8 different female gametes. Q3.

What is the phenotypic and genotypic ratio of Trihybrid cross?

For a trihybrid cross the F2 phenotypic ratio is 27:9:9:9:3:3:3:1. Figure 3. The forked-line method can be used to analyze a trihybrid cross. Here the probability for color in the F2 generation occupies the top row (3 yellow:1 green).

How do you do a Tribrid cross?

How many phenotypes are there in dihybrid F2?

four different phenotypes

In a dihybrid cross f2 generation offsprings show four different phenotypes while the genotypes are of ……….

How many different genotypes and phenotypes will there be in the F2 Dihybrid cross?

These nine genotypes can be grouped into four phenotypes for example 1 YYRR + 2 YYRr + 2 YyRR + 4 YyRr = 9Y-R- round yellow peas.

How many different phenotypes are there in dihybrid F2?

➢Each dihybrid plant produces 4 gamete types of equal frequency. in the offspring. F2 showed 4 different phenotypes: the round and yellow traits did not stay linked to each other.

How many genotypes are possible at a locus with five alleles?

For five alleles (n = 5) we get 15 possible genotypes and five homozygotes. For eight alleles there are 36 possible genotypes.

How many genotypes are possible with 4 genes?

4 alleles there are 1 + 2 + 3 + 4 = 10 genotypes.

How do you find all possible genotypes?

The square is actually a mini-chart used to determine the potential genotype for an offspring with respect to particular trait. To create a Punnett square write all the possible alleles across the top of the square for one parent and all the possible alleles for the other parent down the left-hand side.

How many phenotypes are possible if a character is controlled by four pairs of Polygenes?

Similarly four pairs of genes will contain four heterozygotes. Therefore the number of genotypes would be 81 in four pairs of polygenes. Option “E” is the correct answer.

Why is it possible for an organism to have 2 phenotypes but 3 different genotypes?

Mandira P. Same phenotype but different genotype is possible due to presence of dominant allele. … A person can have a dominant allele on both the homologous chromosomes (i.e. in double dose) while another person may have single dominant allele and a corresponding recessive allele.

What are the possible causes of phenotypic variation?

Phenotypes can be caused by genes environmental factors or a combination of both. Phenotypic variation then is the variability in phenotypes that exists in a population. For example people come in all shapes and sizes: height weight and body shape are phenotypes that vary.

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Why can individuals with different genotypes have the same phenotype quizlet?

Each parent provides its offspring with one allele if every gene so that the offspring inherits a pair if alleles for every gene. The combination of alleles in the offspring. … The masking of recessive alleles can result in organisms with the same phenotype but different genotypes.

What are phenotypic differences?

An organism’s phenotype results from two basic factors: the expression of an organism’s genetic code or its genotype and the influence of environmental factors. … When two or more clearly different phenotypes exist in the same population of a species the species is called polymorphic.

What is the difference between H * * * * * * * * * and heterozygous?

While individual organisms bearing different alleles (Rr) are known as heterozygous.…Homozygous vs Heterozygous.

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