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If a female carrier for hemophilia mates with a healthy male who doesn't have hemophilia what are the expected genotypes and phenotypes of their children?
Wiki User
∙ 14y ago
Haemophilia is a recessive, X-based disorder. The woman in your question is a carrier, meaning she has the defective gene, but isn't bothered by it. Therefor, the woman is of the type 'Xx'. The man is of the type 'XY', not carrying the defective gene. Their children can then be: XX, xX, XY, xY. This means that their daughters won't be affected by it, but might carry it, and their sons either not carry it at all, or carry it and be haemophilic.
Wiki User
∙ 14y ago
The offspring will have a 50% chance of being a carrier female (XHX), a 50% chance of being a healthy male (XHY), and a 0% chance of having hemophilia. Hemophilia is inherited as an X-linked recessive trait, meaning the father passes on the Y chromosome to sons, who will not inherit the X-linked disorder.
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What genotype is produced by the phenotype B?
Genotypes are not created by phenotypes, they are the alleles/genes of the organism. Genotypes (in combination with environment) produce phenotypes. It would be expected that the genotypes Bb and BB would produce the phenotype B.
What is the probability that two people with genotype LlRr have five children and 3 of them are dominant for the two genes L R?
The probability of a child inheriting a dominant allele for one gene from each parent is 1/4, since each parent has a 1/2 chance of passing on the dominant allele. Therefore, the probability of having 3 out of 5 children fulfilling this condition is given by the binomial distribution formula, which calculates the probability of getting exactly 3 successes out of 5 trials. This probability can be determined using statistical software or calculators and is approximately 30%.
What is a ratio of phenotypes produced by a cross?
A ratio of phenotypes produced by a cross is a description of the expected proportion of different physical traits or characteristics that offspring will inherit from their parents. This ratio is determined by the combination of genes passed down from each parent, and can be predicted using Punnett squares or other genetic tools.
The phenotypic ratio resulting from a dihybrid cross showing independent assortment is expected to be what?
The phenotypic ratio resulting from a dihybrid cross showing independent assortment is expected to be 9:3:3:1. This ratio is obtained when two heterozygous individuals are crossed for two traits that are independently inherited. The ratio represents the different combinations of phenotypes that can arise from the cross.
When two loci are on the same chromosome the phenotypes of the progeny sometimes do not fit the phenotypes predicted?
This discrepancy can be explained by genetic linkage, where the two loci are physically close together on the same chromosome. The closer the loci are, the less likely they are to be separated during crossing over, leading to an unexpected inheritance pattern. This can result in certain combinations of alleles appearing more frequently in the progeny than expected based on Mendelian genetics.
What genotype is produced by the phenotype B?
Genotypes are not created by phenotypes, they are the alleles/genes of the organism. Genotypes (in combination with environment) produce phenotypes. It would be expected that the genotypes Bb and BB would produce the phenotype B.
How does a punnett square show precetages of phenotypes and geneotypes?
A Punnett square is a diagram used to predict the outcome of a genetic cross. By filling in the squares with possible combinations of alleles from the parents, you can determine the percentages of different genotypes and phenotypes that are expected in the offspring. The genotypes and phenotypes can be calculated by counting the number of squares that represent each specific combination.
How do you find possible phenotypes in offspring?
The possible genotypes and phenotypes of the offspring can be determined using a Punnett square, a grid that shows the possible combinations of alleles that can result at fertilisation. The Punnett square below shows the expected genotypes of the offspring of parent pea plants that both have the genotype Rr.
How much do the expected genotypes of 100 offspring with the observed genotypes disagree?
If the expected genotypes match the observed genotypes perfectly, there should be no disagreement. If there is disagreement, it can be quantified using a statistical measure such as the chi-squared test to determine the degree of deviation between the expected and observed genotypes. The larger the difference between the expected and observed genotypes, the greater the disagreement.
How do you find possible phenotypes of offspring?
To find the possible phenotypes of offspring, you need to understand the genotypes of the parents and their mode of inheritance. Then, you can use a Punnett square to determine the possible combinations of alleles that can result in different phenotypes in the offspring. By analyzing the genotypes of the parents, you can predict the ratios of different phenotypes that may appear in the offspring.
More phenotypes than expected may result from polygenic inheritance because of what?
pleiotropy
What is the expected genotypic ratios for di-hybrid cross and mono-hybrid cross?
In a dihybrid cross, the expected genotypic ratio is 1:2:1 for homozygous dominant: heterozygous: homozygous recessive genotypes, respectively. In a monohybrid cross, the expected genotypic ratio is 1:2:1 for homozygous dominant: heterozygous: homozygous recessive genotypes, respectively.
What are the results of a cross between parents with genotypes Cc and cc?
The expected results are half Cc and half cc.
What are a toddler aPTT values with hemophilia A?
anythimg longer than the expected value reference range, which is 25-39secs
What is the probability that two people with genotype LlRr have five children and 3 of them are dominant for the two genes L R?
The probability of a child inheriting a dominant allele for one gene from each parent is 1/4, since each parent has a 1/2 chance of passing on the dominant allele. Therefore, the probability of having 3 out of 5 children fulfilling this condition is given by the binomial distribution formula, which calculates the probability of getting exactly 3 successes out of 5 trials. This probability can be determined using statistical software or calculators and is approximately 30%.
What is meant by observed genotypes?
A phenotype is a physical characteristic. For a human an observed phenotype example would be hair colour (e.g brown) or eye colour (green). An observed phenotype is a physical characteristic that can be seen directly or indirectly (internal organs) caused by an individual's genotype.
Does a punnet square show the actual results of a genetic cross?
A Punnett square provides the possible outcomes of a genetic cross based on the parents' genotypes. It helps predict the probability of different genotypes and phenotypes in the offspring. However, it does not guarantee the actual results, as genetic inheritance involves randomness.
