What do you know
about the world of
genetics?
T. Trimpe 2008 http://sciencespot.net/
Use your knowledge of genetics to answer each question
1. If Y represents the dominant yellow gene and y represents the recessive
blue gene, what phenotype would be observed for each genotype?
A. YY
B. yy
C. Yy
2. What do we call a scientist who studies heredity?
3. If your parents are the F2 generation, what would be the P generation?
4. What type chart is used to show the possible gene combinations in a cross
between two organisms?
5. Identify each gene pair as homozygous (Ho) or heterozygous (He).
Tt ______
PP- ______
ss - _____
And the answers are …
1. If Y represents the dominant yellow gene and y represents the recessive
blue gene, what phenotype would be observed for each genotype?
A. YY
Yellow
B. yy
Blue
C. Yy
2. What do we call a scientist who studies heredity?
Yellow
Geneticist
3. If your parents are the F2 generation, what would be the P generation?
Their great-grandparents
4. What type chart is used to show the possible gene combinations in a cross
between two organisms?
Punnett Square
5. Identify each gene pair as homozygous (Ho) or heterozygous (He).
He
Tt - ______
Ho
PP- ______
Ho
ss - _____