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How do you make and interpret Punnet squares for Autosomal and sex-linked traits?
Wiki User
∙ 12y ago
The simplest type of Punnet square is a 2x2 square. You split up the alleles for mother and father and place them on the sides of the large square. Then you "drop" them to determine the possible genotypic and phenotypic ratios. For example, if the mom is Aa and the dad is Aa as well, then using the square, the possible combinations will be AA, 2 Aa, and aa. In this case, assuming A is the dominant allele, then there will be a 3:1 ratio of dominant phenotypes to recessive phenotypes. The genotype ratio will be 1:2:1, indicating 1 homozygous dominant, 2 heterozygous and 1 homozygous recessive genotypes.
This can be done for sex linked traits too. Use XX and XY for the parents and make the same box. For example, if it is an X linked recessive disorder and it is between XY and XX' then the possible outcomes are XX, XX', XY and X'Y. Here there is a 1/2 chance that the child, regardless of gender will be normal, 1/4 that the child (girl) will be normal but a carrier and 1/4 that the child (boy) will be affected.
Wiki User
∙ 12y ago
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How do you work punnet squares?
A punnet square is a box of 4 sections
What are the letters in punnet squares called?
gametes
What is the name of the squares used to determine the probability of a certain traits?
Punnet Squares
What is used to store hereditary information?
Punnet Squares
What has to do with genetics?
DNA, parents, punnet squares, alleles, and genes.
What is used to track the occurrances of a trait in families?
punnet squares
What can be used to help predict the probability of genetics?
Punnet squares.
Why do scientists choose to use punnet squares to describe various traits?
They use punnet squares because it is easy, and accurate. It gives them the probability of the traits, and what the traits are by using upper case, and lower case letters.
Can you use Mendel in a sentence?
Gregor Mendel was a naturalist who created Punnet Squares.
What can combine with punnet squares?
I presume you mean what are Punnet squares used for. They are diagrams which help us show the possible combinations of alleles in the offspring of two individuals.https://www2.palomar.edu/anthro/mendel/mendel_2.htm
What is a chart that shows all possible allele combination resulting from a genetic cross?
Punnet squares show all possible allele combinations resulting from a genetic cross
What are punnent squares and how are they used?
Punnet squares are used mainly by doctors to determine a baby's chances of inherating an trait of disease from it's parents.
