Question

Help me with this please i just need help on how to set the punnent squares up

Answer 1

Learn how to set up Punnett squares to predict the outcomes of genetic crosses.

Step-by-step explanation:

How to Set Up Punnett Squares

Punnett squares are used in biology to predict the possible outcomes of genetic crosses. Here's how you can set up a Punnett square:

1. Write the alleles of one parent along the top of the square and the alleles of the other parent along the side.
2. Fill in the squares by combining the alleles from the top and side.
3. Analyze the resulting genotype and phenotype ratios.

For example, if you're studying the inheritance of eye color and one parent has the genotype BB (brown eyes) and the other parent has the genotype bb (blue eyes), the Punnett square would show that all the offspring will have the genotype Bb (brown eyes).

Answer 2

To set up the Punnett squares, you will need to know the genotypes of the original flies for each parent set.

For parent set #1: both are heterozygous long-winged, so their genotypes are Ll.

For parent set #2: one fly is heterozygous long-winged (Ll) and the other is short-winged (ll).

To determine the resulting probability of offspring for each parent set, you can use Punnett squares. Each Punnett square represents the possible combinations of alleles from each parent and the resulting genotypes and phenotypes of their offspring.

For parent set #1:

The Punnett square would look like this:
Copy code
| L | l |
----|--------|------|
L LL Ll
l Ll ll
The resulting probability of offspring would be:
25% long-winged homozygous (LL)
50% long-winged heterozygous (Ll)
25% short-winged homozygous (ll)
For parent set #2:

The Punnett square would look like this:
Copy code
| L | l |
----|--------|------|
l Ll ll
l Ll ll
The resulting probability of offspring would be:
50% long-winged heterozygous (Ll)
50% short-winged homozygous (ll)
Based on the resulting probabilities, parent set #2 would be the better option for producing the flightless short-winged fruit flies that Pets-R-Us needs. This is because all of the offspring from parent set #2 will have at least one copy of the short-winged allele, whereas only 25% of the offspring from parent set #1 will have this allele. Therefore, using parent set #2 will increase the chances of producing the desired offspring.