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Firstly, if the condition is recessive, both the man and the child with the condition must have the genotype tt.
The mother must have the genotype Tt. This is because if she had TT, all of the children would be Tt and not have the condition. If she were tt, she would have the condition as well.
Therefore if the father has tt and the mother has Tt, the other 3 children who do not have the condition must all have the genotype Tt.
So:
Mother - Tt
Father - tt
Affected child - tt
Other children - Tt
What else can I help you with?
What can you predict about the offspring if you know the genotypes of the parents?
So, if one parent is Aa (heterozygous) and the other parent is aa (homozygous recessive) the punnett square would look like this: ___|_A__|__a_ _a_|_Aa_|_aa_ _a_|_Aa_|_aa_ The genotypes of the offspring 50% heterozygous and 50% homozygous recessive
Is the punnet square used to find the probability of genotypes and phenotypes?
A Punnet square is used to find the probablitiy of certain genetic traits in the offspring of an organism (example: the traits in the children) by taking the trait of each possible parent gamete (sex cell) and combining the combinations within the squares.Example:A aA AA Aaa Aa aaSo the offspring here have a 25% chance of being homozygous (both dominant) dominant for the trait, 50% heterozygous (one dominant and one recessive) dominant for the trait, and 25% (homozygous (both recessive)) recessive for the trait.
Would you expect there to be more children with the dominant phenotype or recessive phenotypewhy?
There would likely be more children with the dominant phenotype because it only requires one copy of the dominant allele to express the dominant trait, whereas the recessive phenotype requires two copies of the recessive allele.
Brown eyes are dominant over blue eyes in humans The genetic makeup of blue-eyed children who have brown-eyed parents must be?
B (dominant) is for brown and b (recessive) is for blue. If both parents have brown eyes, for them to have a blue-eyed child their genotypes (the combination of b's) must both be Bb, because they both need to provide a little b (to have blue eyes you must be double recessive (bb)). This is worked out using a Punnett Square. (example: https://mcglynn-bioreview4.wikispaces.com/file/view/basicpunnetsquare.jpg)
If someone in a family is a purebred and he marries someone with a recessive trait will his children still be considered purebreds?
No, the children would not be considered purebred. Their genetic makeup would be a mix of the purebred parent's dominant traits and the recessive traits from the other parent, making them a hybrid of the two.
Why is a man genotype Cc?
A man with a genotype of Cc means he has one allele for the dominant trait (C) and one allele for the recessive trait (c). This genotype indicates that he carries both versions of the gene and can pass on either the dominant or recessive trait to his offspring. The expression of the dominant or recessive trait will depend on how the alleles interact with each other.
What can you predict about the offspring if you know the genotypes of the parents?
So, if one parent is Aa (heterozygous) and the other parent is aa (homozygous recessive) the punnett square would look like this: ___|_A__|__a_ _a_|_Aa_|_aa_ _a_|_Aa_|_aa_ The genotypes of the offspring 50% heterozygous and 50% homozygous recessive
A man with freckles and a women without freckles with 3 kids with freckles and 1 without what is the genotypes of the parents and children?
The man must have a dominant gene for freckling and a recessive gene for no freckling. The woman has both recessive genes for no freckling. Therefore, there should be a 50% chance of getting the freckling gene and freckle in this family. If they had more children, chances are 50/50 that the baby will freckle.
Is the punnet square used to find the probability of genotypes and phenotypes?
A Punnet square is used to find the probablitiy of certain genetic traits in the offspring of an organism (example: the traits in the children) by taking the trait of each possible parent gamete (sex cell) and combining the combinations within the squares.Example:A aA AA Aaa Aa aaSo the offspring here have a 25% chance of being homozygous (both dominant) dominant for the trait, 50% heterozygous (one dominant and one recessive) dominant for the trait, and 25% (homozygous (both recessive)) recessive for the trait.
Why genetics use Punnett squares?
Geneticists use punnet squares to determine dominant and recessive alleles in organisms such as humans. For example, a monohybrid cross can be used to show hair color. Alleles from parents are used to determine the probability of certain traits to be more or less prevalent.
Which is expressed a dominant or recessive allele and which is passed on to the offspring?
A dominant allele is expressed when an individual carries one or two copies of that allele. A recessive allele is only expressed when an individual carries two copies of that allele. Dominant alleles are typically passed on to offspring if at least one parent carries the dominant allele.
If the parents are AO and BO genotypes for the ABO blood group their children could include what genotypes?
The children could have AO, BO, AB, or OO genotypes. Each child would inherit one A allele from the AO parent and one B allele from the BO parent, resulting in the possible combinations of AO, BO, AB, or OO genotypes.
What is automasal trait?
With an autosomal recessive inheritance pattern, a person needs to have 2 copies of a gene change to have the condition. In most cases, people with an autosomal recessive condition get one gene change from the mother and one gene change from the father.The parents of a person with an autosomal recessive condition may not have the condition themselves, since each parent only needs to have one copy of the gene change. People with one copy of the gene change are called carriers, who do not have the condition, but are more likely to have children with the condition. Other family members (uncles, aunts, brothers, cousins, etc) may also be carriers.
A man who has dystonia marries a woman who doesn't one of their children has the condition what are the possible genotypes of the man and woman?
Assuming the dystonia is hereditary and is a recessive gene which will be called "d" for simplicity, that means the man must be "dd" and the woman is "Dd". This is the only way they could have a child who is "dd" like the father, but not the mother.
AAA AAA what are the possible genotypes and phenotypes os their children?
If the parents both have the genotype Aa, their children could have the genotypes AA, Aa, or aa. The possible phenotypes for their children would be individuals with type A blood (AA or Aa genotype) or type O blood (aa genotype).
What type of alleles does a person considered a Carrier have?
A person considered a carrier typically has one normal (dominant) allele and one mutated (recessive) allele for a specific gene. This means they do not exhibit symptoms of the genetic condition associated with the recessive allele but can pass the mutated allele to their offspring. For example, in autosomal recessive disorders, carriers are asymptomatic but can potentially have affected children if their partner is also a carrier.
Is it true that people who are heterozygous recessive allele but who have a normal phenotype eill not pass the harmful recessive allele to their kids?
It depends on the genotype of the childs other parent. If your partner is heterozygous as well then there is a 25% chance your child will be homozygous recessive. If they are homozygous dominant then none of your children will have the phenotype of the recessive trait. They will just possibly be carriers of the recessive allele.
