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Let's say we're talking about red flowers (red=dominant, R allele) vs white flowers (white=recessive, r allele)
If you cross two homozygous red flowers, RR x RR, you can only get RR offspring, or all red flowers. RR=genotype (what alleles, or genes, they have), red=phenotype (what they look like)
To make the Punnett square, draw a 4-box diagram on a piece of paper by drawing a diagonal line and then a horizontal line halfway down so you get 4 squares. On the top of the box, put R R and along the left side, put R and then another R under it. To fill in the boxes for the Punnett square, cross the top left-hand gene (R) with the top gene on the left-hand side. You'll get RR. Do the same for the top right-hand gene (R) and the top gene on the side. You'll also get RR. Cross the bottom R with the left gene on the top (R) and the right gene on the top. All combinations will be RR in this example.
If you had a red flower that had a homozygous genotype (RR) with a white flower, also homozygous (rr), the results are more interesting. When you draw your Punnett square, you'll see that you get one RR combination, two Rr combinations and one rr combination.
This means that the F1 generation (offspring) will be:
25% homozygous red (RR)
50% heterozygous red (Rr)
25% homozygous white (rr)
Put another way, you'll have one white flower and three red flowers, and two of those red flowers carry a gene for white which is not expressed because it is recessive.
What else can I help you with?
What is the punnett square male bloodtype AB female BB?
# What are the possible blood types for the cross between the type B (BB or Bo?) male and AB female? # What are the possible blood types for the cross between the type B (BB or Bo?) male and AB female?
What allele is represented by capital letters?
In a Punnett square, a capital letter denotes the dominant allele and a lowercase letter denotes the recessive allele.
What is the offspring when the mother has blood type AB and the father has a blood type B?
Possible blood types are A, B, or AB. Basically, the offspring can be any blood type except for O.
What if a man has blood type O what blood type will the child have if in case the mother do not know her blood type?
One cannot predict the blood type of the offspring unless the blood types of both parents are known. Blood group O is not common is a population. There is a possibility of this allele being repressed in the presence of a more dominant blood group allele. Once the blood groups of both parents are known, one an look at all the possibilities that the offspring can have and make an accurate prediction.
Mom o plus dad b plus baby is what blood type?
Your momma is a either AB or B type. I'm not sure whether it is positive or negative though. I would assume positive. O = i i genotype A = Either Ia Ia or Ia i B= either Ib Ib or Ib i AB = Ia Ib since you're father is ii, you HAVE to be Ib i.
How can Punnett squares be used to predict the potential blood types of offspring in a genetic cross?
Punnett squares can be used to predict the potential blood types of offspring in a genetic cross by showing the possible combinations of alleles from the parents. By filling in the squares with the parents' blood type alleles (A, B, or O), you can determine the likelihood of each blood type for the offspring.
How are Punnett squares used to predict the possible blood types of offspring in a genetic cross involving parents with different blood types?
Punnett squares are used to predict the possible blood types of offspring in a genetic cross involving parents with different blood types by showing all the possible combinations of alleles that the parents can pass on to their offspring. This helps determine the likelihood of each blood type in the offspring based on the parents' genotypes.
How can one create a Punnett square to determine the possible blood types of offspring based on the parents' blood types?
To create a Punnett square for determining the possible blood types of offspring based on the parents' blood types, you would first identify the blood type alleles of each parent (A, B, or O). Then, you would create a 4-square grid with the alleles of each parent on the top and side of the grid. By combining the alleles in each square, you can determine the possible blood types of the offspring.
What does a punnet square predict?
Punnett squares can be used to predict the genotype (genetic makeup)- and thus the phenotype (observable/testable trait)- of offspring, given the genetic makeup of the parents. For example, if a woman who has heterozygous A blood (AO) has children with a man who has blood type O (OO), a Punnett square will allow you to predict that half of the children will have blood type O and the other children will have blood type A. However, this only works for traits that are strictly dominant/recessive and determined by one pair of genes, like Mendel's pea color or human ABO blood types. Traits such as hair/eye color, sensitivity to taste, and many others are polygenic (determined by many genes) and cannot be easily determined from the parents.
Can a daughter be blood type AB when her father is blood type O and her mother is B?
yes, do a punnett square.
What is the punnett square male bloodtype AB female BB?
# What are the possible blood types for the cross between the type B (BB or Bo?) male and AB female? # What are the possible blood types for the cross between the type B (BB or Bo?) male and AB female?
Who created virgin?
You can find out your blood type by asking your parents what their blood types are and working out a Punnett Square, or you can simply go to a doctor.
If someone cross a purebred mother with type B blood and a father with type AB blood what are the possible blood type outcomes of their offspring?
The possible blood type outcomes of their offspring would be type B or AB. Each parent passes on one blood type allele to their child, so the child could inherit the B allele from the mother and the B or A allele from the father, resulting in blood type B or AB.
How is a punnett square a mode for what happens during meiosis?
As I'm sure you know, we get half of our genetic material from each parent, and we have two genes for every characteristic, one from mother and one from father, with the exception of a few traits found on the end of the X chromosome in males, who have an XY configuration and must depend on whichever gene the mother gave for certain characteristics such as color vision and proper blood clotting. During meiosis, egg or sperm cells are formed when our chromosomes are split in half to allow for the fertilization process to complete the genetic codes from the other parent. A Punnett square can be used to predict only which possible gene might be given by a single egg or sperm cell based on genotype of the parent, if known, but it is incomplete without the other portion of the code. However, it can be used to show how one parent may contribute either a dominant or recessive gene for a particular trait if the parent's complete genotype is known. For example, I know that my blood type is A, which is my phenotype, but that my genotype is AO because my father was type O and that is the only gene a type O person can donate. Type O genes are recessive, so that phenotype would not show up if someone inherits either a type A or type B gene from the other parent, but the type O gene would have a 50-50% chance of ending up in my egg cells after meiosis split my blood type gene combination (AO), called the genotype, in half. Half of my eggs would therefore contain type A genes and the other half would have type O genes, and that could be put on a Punnett square to show the 50-50% chance of my offspring having either type A or type O blood, depending on which gene he inherits from me, but the father's genotype is needed to complete the full Punnett square possiblities. Since my husband is type O, he could donate only an O gene in every sperm cell, which means that his meiotic Punnett square would have only type O genes in every square. For a true genetic prediction, both genotypes of each parent must be combined, but at least in meiosis, it can be predicted that I have a 50-50% chance to donate either a type A gene or a type O gene to my offspring, while my husband has a 100% chance to donate a type O gene because his genotype has to be OO. Our son, therefore must be either type A or type O and has a 50% chance of having either. We don't know because his blood type has never been tested, but those are his only possibilities. Since neither my husband nor I have type B genes, it would be impossible for our child to have type B or AB blood, which could be deduced from a Punnett square for meiosis for his mother and his father since our genotypes for this trait are known positively. I hope this helped!
What allele is represented by capital letters?
In a Punnett square, a capital letter denotes the dominant allele and a lowercase letter denotes the recessive allele.
Can A plus and B- make 0- blood?
you need to make a punnett square. you know that the first person has A+ blood, so their side of the punnett square is either A+ A+, A+ O-, A- O+, A+ O+ you know the second person has either B- B- or B- O- then you put them into punnett squares: in order to have type O blood, you must have 2 o's so we will only look at the possible O combinations. Also to have negative, you must have no positive Rh in the blood, so we only need to look at the pairs that contain an O- A+ O- B- AB+ BO- O- AO+ OO- OO- can really be written as O- because the dominant antigen takes over and they are the same, so, A+ and B- blood can make O- blood, but only under certain conditions. So, YES!
Can a 0- and a a- make a a?
you need to make a punnett square. you know that the first person has A+ blood, so their side of the punnett square is either A+ A+, A+ O-, A- O+, A+ O+ you know the second person has either B- B- or B- O- then you put them into punnett squares: in order to have type O blood, you must have 2 o's so we will only look at the possible O combinations. Also to have negative, you must have no positive Rh in the blood, so we only need to look at the pairs that contain an O- A+ O- B- AB+ BO- O- AO+ OO- OO- can really be written as O- because the dominant antigen takes over and they are the same, so, A+ and B- blood can make O- blood, but only under certain conditions. So, YES!
