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What are the chances for each genotype in a heterozygous cross using Mendelian Genetics?
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A man and a woman are both heterozygous Freckles are dominant over no freckles What are the chances their children will have freckles?
a 100% chance for freckles.
If the mother is heterozygous for a trait like widows peak what are the chances that the eggs she produces will have the gene for a widows peak?
Half her eggs will have the widow's peak gene, and the other half will have the other allele, so it's 50%.
John's father has genotype BO and his mother has phenotype O What are the chances of John being phenotype B?
50%. First you need to remember that a BO genotype would result in a B phenotype. The only way to have an O phenotype is to have an OO genotype. Therefore, we know that John's parents are BO and OO. Then, you can make a Punnett square. B O O BO OO O BO OO Half of the offspring between John's parents would have genotype BO and half would have OO. Therefore, half would have each of the phenotypes B and O. The answer is 50%.
Which is the dominant gene father has dark brown eyes mother has blue eyes?
Sure you don't mean heterozygous dominant? If you don't there would be no blue eyed offspring. Let's assume you meant heterozygous dominant.B = brownbl = blueBbl X Bbl1/4 of the offspring would have blue eyes, 25%.
What percentage of the possible types of offspring had the same phenotype as the parents?
Hey there. To answer this accurately, i would need to know the genotypes of both parents. I'll show you a trick that works them out in a flash. A phenotype is the result of a genotype, which is the result of 2 alleles. Say if both parents were HOMOZYGOUS for brown hair, with their genotype would be BB, BB. Use a trick called a punnet square to answer this; _|B |B | B|BB|BB| <-- not the best punnet square, but the top row shows the first parents B|BB|BB| genotype (BB) and the side shows the second's. (BB) The cross of this shows all the children will have brown hair, as inherited from each parent. If the Mother had HOMOZYGOUS brown hair (BB), and the father had HETEROZYGOUS brown hair (Bb) the results would be 100% Brown hair too, because the brown hair gene (B) is dominant over the non brown hair gene (b). Below; _|B |B | B|BB|BB| <--- this shows the cross gives a 50% chance to be Homozygous for brown b|Bb|Bb| hair but 50% heterozygous for brown hair, but carrying a non- brown hair gene. If we cross 2 heterozygous parents, the results are shown: _|B |b | B|BB|Bb| b|bB|bb| <----- This shows the child has a 75% chance of having brown hair (either (BB or bB, Bb) and 25% of being non-brown (bb)). This can be used in any gene cross, but you must keep in mind that one gene will be dominant and one will be recessive. I used the brown hair gene as an example here, as I don't know whether it may be dominant or recessive to other hair colours. Also, if you were after a global statistic, I wouldn't know. I hope this helps you. Fletch
Both a man and a woman are heterozygous for freckles Freckles F are dominant over no freckles f What is the chances that their child will have freckles?
PHENOTYPE: 75% with freckles 25% without freckles GENOTYPE: 1FF:2Ff:1ff
What is an individual with genotype AAA described as?
An Aa genotype can result in the same phenotype as either an AA or AA genotype, if one of the alleles acts in a dominant fashion. If the A allele is dominant over the a allele, then the phenotype of a heterozygous (Aa) individual will be the same as the phenotype of a homozygous dominant (AA) individual.
What are the chances of a woman with blood type b and a man with blood type ab having a child with type 0?
There is no chance that this baby would have the blood type O. In order for someone to have the blood type O, the genotype must be IoIo. That means that each parent would have to have an O allele in their genotype. In this case only the mother has the possibility of having an O allele. Genotypes of blood type A: IbIb, IbIo Genotype of blood type AB: IaIb Genotype of blood type O: IoIo here is a punit square to show you heterozygous mommy heterozygous daddy IbIo IaIb Ib Io Ib IbIb IbIo Ia IaIb IbIo This child would have 75% chance of having the blood type B and 25% chance of being type AB
How tall will i be at 18 if i am 5'9 at 15 my mum is 5'6 and my dad is 5'8?
chances are that you may be taller, but genetics are a lottery, and also you have external factors that develop the phenotype, eg. i smoked during my teens, I'm now 5' 7'' :( phenotype is what effect the world has on the genotype, pretty much
What are the chances of having kids that can roll their tongue if a heterozygous tongue roller has kids with someone who cannot roll?
25%
A man and a woman are both heterozygous Freckles are dominant over no freckles What are the chances their children will have freckles?
a 100% chance for freckles.
What are the chances that a female will grow to be taller than her father?
If her mother is tall, there is a chance she will take after her genetics as opposed to her father's.
What chances does an offspring have of getting Gaucher Disease?
It depends on whether your parents are carriers or not. If they are NN (or normal normal) and they have sex with someone who is Nn (or normal gauchers) than using a punnet square the chances of them becoming a carrier are 50 50. If your parents are both carriers ie. Nn Nn then the chances of them becoming a carrier are 50% and them having the disease is 25%. If your parents are nn Nn then the chances of them becoming a carrier is 50% and the chances of them having the disease is 50% so they will either be a carrier or have the disease either way. If your parents are nn NN then there is a 100% chance of them being a carrier. You can figure this out by looking at your family tree and seeing who had the disease before you in your family. This is only very basic Mendelian genetics so i would consult a doctor for a more legitimate answer.
Why do children have characteristics of both their mother and father?
Children have similar characteristic's to their parents because when they are conceived, both of the parents genes unify to create a new set of characteristic'd depending on dominant and recessive traits. For example, Jane and Henry find out they are having a baby. Jane has homozygous blue eyes whilst Henry has heterozygous brown eyes. The chances are that their baby will either have 50% homozygous blue eyes or 50% heterozygous brown eyes.
Chances of illness?
Every individual's chances for breast cancer are different. Diet, exercise, and genetics all play a role in the chances for getting breast cancer. On average, every woman born has a one in eight chance of getting breast cancer.
What is the probability of having a child with attached earlobes when an individual with attached earlobes mates with an individual heterozygous for free earlobes?
Attached earlobes are a recessive trait. When one parent has attached earlobes and the other is heterozygous for free earlobes, the chances of any particular offspring having attached earlobes is fifty percent.
What are the chances of getting a square shape when 2 heterozygous square shapes are crossed?
75% 3/4 chance of it being square. 25% 1/4 change of it being round.
