ENRICHMENT

Day / date : ............................
Name : ............................
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MONOHYBRID AND DIHYBRID TEST

1.In pea plants, the allele for purple seed is dominant over the allele for white seed. If two heterozygous plants are crossed-breed, what is the probability of producing offspring with purple seeds?

2.Based on Mendel’s First Law, draw the schematic diagram to show the inheritance of the ABO blood groups and the genotypes of the offspring if the father’s blood group is A and the mother’s is B. Write down all the alternative answer of it.

3.In pea plants, the allele for smooth seed is dominant over the allele fro wrinkled seed. If two heterozygous plants with smooth seeds are crossed, what is the percentage of an offspring having wrinkled seeds?

4.Green smooth seed pea plant with (BBHH) is crossed with yellow wrinkled seed (bbhh). Green and smooth are dominant over the allele for yellow and wrinkled seed. What is the probability of genotype and fenotype on F1?

5.Crossing of Mirabilis jalapa produces 100% pink flowers of F1. If the F1 is crossed with the other F1, what is the probability of its phenotype?

6.A cock with homozygous red feather is crossed with white one hen. Allele for red feather is dominant over white one. If the F1 is crossed by the other F1 and produce 16 chickens,what is probability of chicken with white feather?

7.A man with normal vision marries a colour-blind woman. Write a schematic diagram of it.

8.What is the meaning of. . . .
a.homozigous
b.dominant
c.co-dominant