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A plant can have either broad leaves (B) or narrow leaves (b). What cross is represented by the Punnett square shown below?
BB. Bb Bb. bb
What are the possible genotypes of a person with a type B blood?
BB or BO
What does a punett square show?
The chance of a particular trait being inherited. For each trait there are several alleles, some are dominant and others recessive, for example brown eyes are dominant over blue. The recessive phenotype can only have a genotype with both recessive alleles eg. bb The dominant phenotype can have a genotype with both dominant alleles eg. BB or one of each eg. Bb A punnet square shows the likelihood of a phenotype being inherited from given genotypes, alleles etc... BB and Bb makes BB BB Bb Bb All offspring will have the dominant phenotype (BB or Bb) eg. brown eyes Bb and Bb makes BB Bb Bb bb One in four of the offspring will have the recessive phenotype (bb) eg. blue eyes
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
What color eyes will a baby born of one parent with brown eyes and one parent with green eyes?
Brown. Brown eye gene = B Blue eye gene = b Each person has two copies of the eye color gene in their genome, one inherited from each parent. Now if both parents only carry the gene for brown eyes, BB and BB, then their child will receive one B from each parent, ending up as BB. The same works for blue eyes, if that's the only gene both parents carry, bb and bb. Each parents gives on b to the child, who ends up as bb. If you have one parent who only has the gene for brown eyes, BB, and one parent who only has the gene for blue eyes, bb, then all the children will have brown eyes. Example: One parent gives a B, the other gives a b. Bb = brown eyes. Here's why: When you have two alleles (coding sequences) from genes that are at odds with each other, one version will override the the other. When dealing with eye color, B always dominates b. But these children now carry the b gene in them, and could pass it down to their own children. Some of them, depending on the other parent, could end up with blue eyes. If one parent is Bb, and the other is bb, then each time they have a child, there is a 50% chance it will have blue eyes. Example: First parent is Bb, second parent is bb, then their children will end up as either Bb, bb, Bb, bb. If both parents carry the genes for brown eyes and blue eyes, then each time they have a child, there is a 25% chance it will have blue eyes. Example: First parent is Bb, second parent is Bb, then their children will end up as either BB, Bb, Bb, bb.
How big is Alpha Centauri Bb?
The minimum mass is estimated at about 1.13 times Earth's mass. The maximum possible mass is not known.
Name the nearest star to planet earth?
Sol. (Usually referred to as "the sun".)_________________________The next-closest after that is Proxima Centauri, which is 4.2 light-years away. Curiously, Proxima Centauri is not visible to the naked eye, it is a red dwarf star, and even though it is closest, it is too small and dim to be seen!
Can you use any bb's in your bb gun?
If its a BB Gun, Then Yes.
How do you get dust out of a barrel of a bb gun?
dry fire it without any BB's
What does air cocking mean for BB guns?
You cock the BB gun without loading any BB's into it just air.
What is the bb cal and what tyep of bb does the model z77 take?
You can use any brand of BB as long as they are .177 or .175 caliber
Who made sears bb guns in the 50s?
They were made by both Daisy and Crosman. Any BB gun model starting with 799 was a Daisy and any BB gun starting with model number 126 was a Crosman.
Is there any vending machines that sell bb guns?
No- due to age restrictions on purchase of BB guns.
What Kmart sells bb guns?
It all depends on the city ordance on selling BB guns. Some Kmarts may not sell any BB guns.
Can using different bb's hurt your air soft gun?
No, as long you don't use metal BB's, any plastic, 6mm airsoft BB's are good to use.
Is it harmful for yard birds to eat BB pellets?
It's harmful for any animal to eat BB pellets.
Does BB King have any kids?
He has 15 children.
