Mitosis, Meiosis, And Patterns Of Inheritance Worksheet (Page 18 of 27) in pdf

Mitosis, Meiosis, And Patterns Of Inheritance Worksheet Page 18

IV. CODOMINANCE (Each allele is expressed in the pure form) (text p. 178)

20. In some types of cattle, red coat color is codominant with white coat color. The heterozygote is a color

mixture called roan where both red and white hairs are mixed together. Determine the parents’ genotypes and

the coat color, (phenotypic ratios) of the offspring in the following crosses?

Genotype of Female

Genotype of Male

Offspring ratios

A. a red cow

x a white bull

____________

B. a roan cow

x a roan bull

C. a roan cow

x a red bull

V. MULTIPLE ALLELES (More that 2 forms of an allele for one trait) (text p. 178)

21. Complete the following table: A and B are dominant and independently expressed, O(ii) is recessive.

A is one type of protein on the Red Blood Cell and B is another type of protein on a Red Blood Cell. the

ability to make these proteins is carried on the genes. O means the person lacks that particular type of

protein and lacks those genes. If a person receives blood that has proteins not normally found in their body,

those blood cells are attacked by the persons immune system which causes complications which could

result in death.

Blood type (Phenotype) Possible Genotypes

22. What are the possible blood types of children of the following couples?

A. Mother: AB

Father: AB

Children’s possible genotypes

Children’s possible blood types

B. Mother: AB

Father:

Children’s possible genotypes

Children’s possible blood types

Mitosis, Meiosis, And Patterns Of Inheritance Worksheet Page 18