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How does probability help explain the results of a genetic cross?
Wiki User
∙ 13y ago
Genetics often involves dominant and recessive alleles. For instance, blue eyes are recessive and brown eyes are dominant.1 Each parent contributes one allele. If you get two blues, then your eyes are blue. If you get one or two browns, then you eyes are brown. That means that, given a random contribution from your parents, you have a 25% probability of blue eyes.
It also means that, even though you have brown eyes, you could be carrying the blue allele, and two parents with brown eyes could have a blue eyed child.
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1Its more complicated than that, since eye color is actually polygenic, involving more than one allele. This example was simplified to answer the question.
Wiki User
∙ 13y ago
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How are the principles of probability used to predict the outcomes of genetic crosses?
Whenever Mendel performed a cross with pea plants, he carefully categorized and counted the many offspring. Every time Mendel repeated a particular cross, obtained similar results. For example, whenever Mendel crossed two plants that were hybrid for stem height (Tt), about three fourths of the resulting plants were tall and about one fourth were short. Mendel realized that the principles of probability could be used to explain the results of genetic crosses.
From the cross AA x AA the probability of producing a homozygous dominant offspring is?
From the cross Aa x Aa, the probability of producing a homozygous dominant offspring is 1/4 or (0.25).
A genetic cross can be represented in a graph in the form of what?
A Punnet Square
How can you predict he outcome of a genetic cross?
by using a Punnett Square
In the cross AA x AA what is the probability of obtaining AA offspring?
50% will be tall
How are the principles of probability used to predict the outcomes of genetic crosses?
Whenever Mendel performed a cross with pea plants, he carefully categorized and counted the many offspring. Every time Mendel repeated a particular cross, obtained similar results. For example, whenever Mendel crossed two plants that were hybrid for stem height (Tt), about three fourths of the resulting plants were tall and about one fourth were short. Mendel realized that the principles of probability could be used to explain the results of genetic crosses.
What is used to predict the outcome of a test cross?
The punnett square which is mainly about probability of genetic crosses
A graphic used to predic the results of a genetic cross?
punnett square
What chart is used to predict results of genetic cross?
Punett Square
What did mendel predict was the probability of producing a tal plant from a genetic cross of two hybrid tall piants?
The principles of probability explained the numerical results of Mendel's experiments. In one of his experiments, the probability that an F2 plant would be tall was 75%.
What is the square used to determine probabillity and results of cross is called?
Square used to determine probability and results of cross is called a Punnett square. It is named after Reginald C. Punnett.
The results of a genetic cross can be shown in a punnett square which is?
to understand the traits and if there dominit or recesive
What is the probability of producing a tall pea from a genetic cross between two hybrid tall pea plants?
It is 1/4.
What is the probability of producing a tall pea plants from a genetic cross between two hybrid tall pea plants?
It is 1/4.
Why is it necessary for homologous to pair during meiosis and not desirable for them to pair in mitosis?
to cross over which results in the genetic recombination
A genetic cross preformed many times produces 798 long-stemmed plants and 266 short-stemmed plants the probability of obtaining a short-stemmed plant in a similar cross is?
266/1,064
How does a botanist use probiblity?
probability is used by botanists, horticulturists and geneticists to determine the probability or "chance" of genetic outcome. for example: if you cross a red flowering plant with a white flowering plant.. probability is used to calculate what chances the offspring of the crossing would be red, pink or white.
