Solve all of these problems using a Punnett Square. If you cannot reproduce the square using software, then you may do them by hand and scan in the image of your solution and submit all images in the one document.
In certain bacteria, an oval shape (A) is dominant over round (a) and thick cell walls (B) are dominant over thin (b). A bacteria heterozygous for both oval shape and a thick cell wall was crossed with a round bacteria with a thin cell wall. Describe the phenotype of the offspring.
The ability to roll the tongue sideways (A) is dominant over the inability to roll one's tongue (a). In humans, non-attached earlobes (B) are dominant over attached earlobes (b). Two parents with attached earlobes can roll their tongues. They are both heterozygous for the tongue rolling trait.
What is the genotype of the mother?
What is the genotype of the father?
What are the possible gametes from the mother?
What are the possible gametes from the father?
Draw the Punnett square, and combine the gametes to produce offspring
What is the phenotypic ratio of these offspring?
A man heterozygous for non-attached earlobes can roll his tongue. A woman with attached earlobes can roll her tongue. Assume both are heterozygous for the tongue-rolling trait.
What is the genotype of the mother?
What is the genotype of the father?
What are the possible gametes from the mother?
What are the possible gametes from the father?
Draw the Punnett square, and combine the gametes to produce offspring
What is the phenotypic ratio of these offspring?
In summer squash, white fruit color (W) is dominant over yellow fruit color (w) and disk-shaped fruit (D) is dominant over sphere-shaped fruit (d). If a squash plant purebreeding for white and purebreeding for disk-shaped fruit is crossed with a plant purebreeding for yellow, sphere-shaped fruit, what will the phenotypic and genotypic ratios be for:
the F1 generation?
the F2 generation?