[SOLVED] Calculate the phenotypes for f1 and f2 progeny for each of the following crosses.

Help me study for my Biology class. I’m stuck and don’t understand.

Genetic Inheritance Format for Exp. 1

Typed Genetic Inheritance report must be in the following format for full credit in Lab Report #1.

1) Number the figure, e.g., Figure 1.

2) State whether the cross is F1 or F2, as well as the number of the vial, e.g., F1 #215

3) Type out the genetic cross, e.g., Xw/Xw x Xw+/Y

4) State whether the cross is sex-linked, autosomal, or sex-linked and autosomal.

5) Always write the dominant allele first, e.g., bw+/bw

6) Capitalize the X and Y chromosomes. Write the gene names in lower case. Use the superscript function to raise the + sign or the genes on X chromosomes (see #3 & 5 above).

7) State the ratio of offspring’s phenotypes and genotypes (see below).

8) Always follow each F1 cross with the F2 cross of the same type (sex-linked F1 followed by sex-linked F2)

EXAMPLE

Figure 1: F1 #??? Sex-linked cross

Xw/Xw x Xw+/Y

Genotypes:

Xw+/Xw = 100% of females

Xw/Y = 100% of males

Phenotypes:

Males are 100% white-eyed

Females are 100% brick red-eyed

Figure 2: F2 #??? Sex-linked cross

Xw+/Xw x Xw+/

cross 1: OR X 109

Cross 2: OR X 212

Cross 3: OR x 305