how would i make a punnet square to find the offspring of parents:

Question

how would i make a punnet square to find the offspring of parents:

SsYy x ssyy

I don't understand what i would put for each of the boxes on the outside

Answer 1

SY

Sy
sY
sy
across the top
sy sy sy sy

Answer 2

one parent is Ss Yy

so put those two across the top
-- Ss Yy

ss

yy

Answer 3

SY

Sy
sY
sy
across the top and bottom.

Wouldn't the top be the same as the bottom? According to this genotype, the ratio will be 1:1:1:1

Answer 4

To create a Punnett square for determining the offspring of a genetic cross, you need to understand the principles of Mendelian genetics and the inheritance of traits.

In your example cross of SsYy x ssyy, let's break down the traits:

- The first parent, SsYy, has two traits: one for the S/s gene and one for the Y/y gene.
- The second parent, ssyy, also has two traits: one for the S/s gene and one for the Y/y gene.

To construct the Punnett square, follow these steps:

Step 1: Write down the alleles for each parent.
- First parent: SsYy (The capital letter represents the dominant allele, and the lowercase letter represents the recessive allele.)
- Second parent: ssyy

Step 2: Separate the alleles for each parent.
- First parent: Ss Yy (Ss represents the two possible alleles for the S gene, and Yy represents the two possible alleles for the Y gene.)
- Second parent: ss yy (ss represents the two possible alleles for the S gene, and yy represents the two possible alleles for the Y gene.)

Step 3: Draw a 2x2 grid to create the Punnett square.

S s
Y |_______|_______|
y |_______|_______|

Step 4: Fill in the boxes with the possible combinations of alleles.

- In the top-left box: The first allele in the top row is S, and the first allele in the left column is Y. So the combination is SY.
- In the top-right box: The first allele in the top row is S, and the second allele in the left column is y. So the combination is Sy.
- In the bottom-left box: The second allele in the top row is s, and the first allele in the left column is Y. So the combination is sY.
- In the bottom-right box: The second allele in the top row is s, and the second allele in the left column is y. So the combination is sy.

The resulting Punnett square would look like this:

S s
Y | SY | Sy |
y | sY | sy |

Now, the combinations in each box represent the possible genotypes of the offspring. To determine the phenotypes (physical traits) of the offspring, you would need to know the specific traits associated with the S and Y genes.