Name: Kian Hamilton Period: 8th Using Punnett Squares to do a Monohybrid Cross You can use a Punnett Square to figure out the possible gene combinations of offspring using a Punnett Square. Remember, the stronger gene is dominant and the one that is masked is recessive. Dominant genes are always written with CAPITAL letters and recessive genes are always written with lower case letters. If both genes in the pair are the same, the trait is homozygous. If both traits in the pair are different, the trait is heterozygous. The genetic makeup of the individual is the genotype and the observable physical characteristics are the phenotype. Here is a list of dominant and recessive traits. You will be using these traits to predict the results of various crosses. Trait Pod Shape Pod Color Flower Position Plant Height Dominant Smooth (S) Green (G) Axial (A) Tall (T) Recessive Constricted (s) Yellow (g) Terminal (a) Short (t) Follow the steps ahead for doing a Punnett Square. Cross a plant that is heterozygous for green pods with a plant that has yellow pods. 1. What are the genotypes of the parents? X 2. On the top, place the genotype for one parent and on the side place the genotype from the other parent. It does not matter which parent you place on the top and which parent you place on the side. Complete the Punnett Square above by writing the alleles from the gametes in the appropriate boxes. This represents fertilization, when the male and female gametes come together. Now let's practice! Refer to the chart at the top of this page to do the following crosses. Use words and numbers when doing the ratios.
Name: Kian Hamilton Period: 8th Using Punnett Squares to do a Monohybrid Cross You can use a Punnett Square to figure out the possible gene combinations of offspring using a Punnett Square. Remember, the stronger gene is dominant and the one that is masked is recessive. Dominant genes are always written with CAPITAL letters and recessive genes are always written with lower case letters. If both genes in the pair are the same, the trait is homozygous. If both traits in the pair are different, the trait is heterozygous. The genetic makeup of the individual is the genotype and the observable physical characteristics are the phenotype. Here is a list of dominant and recessive traits. You will be using these traits to predict the results of various crosses. Trait Pod Shape Pod Color Flower Position Plant Height Dominant Smooth (S) Green (G) Axial (A) Tall (T) Recessive Constricted (s) Yellow (g) Terminal (a) Short (t) Follow the steps ahead for doing a Punnett Square. Cross a plant that is heterozygous for green pods with a plant that has yellow pods. 1. What are the genotypes of the parents? X 2. On the top, place the genotype for one parent and on the side place the genotype from the other parent. It does not matter which parent you place on the top and which parent you place on the side. Complete the Punnett Square above by writing the alleles from the gametes in the appropriate boxes. This represents fertilization, when the male and female gametes come together. Now let's practice! Refer to the chart at the top of this page to do the following crosses. Use words and numbers when doing the ratios.
Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter3: Transmission Of Genes From Generation To Generation
Section: Chapter Questions
Problem 17QP
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Transcribed Image Text:Name:
Kian Hamilton
Period: 8th
Using Punnett Squares to do a Monohybrid Cross
You can use a Punnett Square to figure out the possible gene combinations of offspring
using a Punnett Square. Remember, the stronger gene is dominant and the one that is
masked is recessive. Dominant genes are always written with CAPITAL letters and
recessive genes are always written with lower case letters. If both genes in the pair are the
same, the trait is homozygous. If both traits in the pair are different, the trait is
heterozygous. The genetic makeup of the individual is the genotype and the observable
physical characteristics are the phenotype.
Here is a list of dominant and recessive traits. You will be using these traits to predict the
results of various crosses.
Trait
Pod Shape
Pod Color
Flower Position
Plant Height
Dominant
Smooth (S)
Green (G)
Axial (A)
Tall (T)
Recessive
Constricted (s)
Yellow (g)
Terminal (a)
Short (t)
Follow the steps ahead for doing a Punnett Square.
Cross a plant that is heterozygous for green pods with a plant that has yellow pods.
1. What are the genotypes of the parents?
X
2. On the top, place the genotype for one parent and on the side place the genotype from the
other parent. It does not matter which parent you place on the top and which parent you
place on the side. Complete the Punnett Square above by writing the alleles from the
gametes in the appropriate boxes. This represents fertilization, when the male and female
gametes come together.
Now let's practice! Refer to the chart at the top of this page to do the following crosses. Use
words and numbers when doing the ratios.
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