Cross a heterozygous tall and round seed pea plant with another heterozygous tall, round seed plant.
Cross a pea plant that is heterozygous for purple flowers and homozygous dominant for yellow seeds with a plant that is heterozygous for purple flowers and homozygous recessive for green seeds.
Cross a plant that is heterozygous for round seeds and homozygous recessive for white flowers with a plant that is homozygous recessive for wrinkled seeds and heterozygous for purple flowers.
What are the possible genotypes for each blood type?
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Phenotype
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Genotype
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Type A
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Type B
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Type AB
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Type O
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Juan has blood type A (IAIA), his wife Lucia has blood type B (IBi). What are the possible genotypes of their children?
A child has genotype of ii. If the child’s mother has a genotype of IAi, which blood types COULD represent the father?
If a man with blood type O marries a woman with Type A, what would be the possible phenotypes of the offspring?
What are the possible genotypes of children born to a man that has the genotype IAi and a woman that has the genotype IAIB?
What blood types can donate blood to (list all):
a. A person with type A blood?
b. A person with type O blood?
c. A person with type AB blood?
Rickets is a condition in which the bones become soft. Children with rickets develop bone deformities. A lack of vitamin D, calcium, and phosphorus in the diet usually cause this condition. One form of rickets, called vitamin D-resistant rickets, is caused by the recessive trait on the X chromosome. A mother who is heterozygous for rickets marries a man who HAS rickets.
a. What chance do they have of having a daughter with rickets?
b. What chance do they have of having a daughter that is a carrier of rickets?
c. What chance do they have of having a son who isnormal?
d. What chance do they have of having a child with rickets?
Baldness is a sex-linked trait. Sam wanted to know if he would be bald when he grew up. Therefore, Sam decided to find out how much of a chance he had of becoming bald. Through research, he found out that his mother is a carrier for the baldness trait and that his father has a normal gene for hair.
a. What chance does Sam have of being bald when he gets older?
b. What chance would of having a daughter who will be bald?
c. What chance would of having a daughter who is a carrier of the baldness trait?
In humans colorblindness is a sex-linked, recessive gene. Having normal vision is dominant. A woman who is heterozygous for colorblindness marries a man who is normal.
a. Normal _____ b. Mom _____ ______Color-blind _____ Dad _____ _____c. Make the Punnett square.
e. What are the percent of this couple having daughters that are color-blind?
f. What is the percent of having sons that are color-blind?
In cases of color-blindness in humans, it has been noted that most color-blind people are males. Two normal parents have a color-blind son.
a. Normal _____ b. Mom _____ ______ Son _____ _____Color-blind _____ Dad _____ ______c. Make the Punnett square.
