Heredity Assignment

Heredity 1

Observe the F1 seedlings from the cross of gl1 x gfp1 using the dissecting scope and the royal blue light source. What is the inheritance pattern for the glabrous phenotype? What is the inheritance pattern for the gfp1 pattern?

Glabrous phenotypes are recessive, while gfp1 patterns are dominant

Construct a Punnett square for the original cross of parental lines: gl1gl1/gfp2gfp2 x gl2gl2/gfp1gfp1

Gametes	gl1gl1/gfp2gfp2
gl2gl2/gfp1gfp1	gl2gl1/gfp1gfp2

What is the expected phenotype?

Trichomes, fluorescent

Construct a Punnett square for the F2. What are the possible gametes for this cross?

Gametes	gl2gfp1	gl2gfp2	gl1gfp1	gl1gfp2
gl2gfp1	gl2gfp1 gl2gfp1	gl2gfp2 gl2gfp1	gl2gfp1 gl1gfp1	gl2gfp2 gl1gfp1
gl2gfp2	gl2gfp1 gl2gfp2	gl2gfp2 gl2gfp2	gl2gfp1 gl2gfp2	gl2gfp2 gl1gfp2
gl1gfp1	gl1gfp1 gl2gpf1	gl1gfp2 gl2glfp1	gl1gfp1 gl1gfp1	gl1gfp2 gl1gfp1
gl1gfp2	gl1gfp1 gl2gfp2	gl1gfp2 gl2gfp2	gl1gfp1 gl1gfp2	gl1gfp2 gl1gfp2

Heredity 2

Table 1

Phenotype	Number of seedlings		# expected seedlings
	Group	Class	Group	Class
Trichomes, Fluorescent	17	80	23	92
Glabrous, Fluorescent	7	36	8	30
Trichomes, Non-fluorescent	11	32	8	30
Glabrous, Non-fluorescent	6	16	3	10
Total	41	164	41	164

Evaluate your observed vs. expected. Do they agree? If not, why might they not?

The observed and expected results are close, but not quite exact. This could be accounted for due to human error of difficulty identifying the characteristics of each phenotype. However, the results are very close.

Were the results from your group substantially different from the total class data? Why?

The results from my group did not substantially differentiate from the class data. The percentages for each phenotypic group were very close if not exactly the same.