Pedigree Charts Worksheet | Sixth Grade Science | Twinkl USA - Free Printable

Since you did not select any specific options (ExplainAnswer, TeachTopic, or GeneratePractice are all false), I will provide the direct solution to the worksheet shown in the image.

The worksheet asks you to analyze a pedigree chart for a family where Freckles is a dominant trait.

Step-by-Step Solution:

1. Analyze the Key:
* Square: Male
* Circle: Female
* Shaded Shape: Has Freckles (Dominant trait)
* Unshaded Shape: No Freckles (Recessive trait)

2. Analyze the Parents (Top Row):
* Father (Square): Unshaded. This means he does not have freckles. Since freckles are dominant, he must have two recessive alleles (let's call them `ff`).
* Mother (Circle): Shaded. This means she has freckles. She could be `FF` or `Ff`.

3. Analyze the Offspring (Bottom Row):
* The lines connect the parents to three children.
* Child 1 (Circle): Unshaded (No freckles). Genotype: `ff`.
* Child 2 (Square): Shaded (Has freckles). Genotype: `F_` (likely `Ff` because dad gave an `f`).
* Child 3 (Circle): Unshaded (No freckles). Genotype: `ff`.

4. Answering the Specific Questions on the Worksheet:

* "In the squares represent?"
* Answer: Males

* "In the circles represent?"
* Answer: Females

* "How many offspring do the parents have?"
* Count the shapes connected to the bottom of the parent line. There are three shapes (two circles and one square).
* Answer: 3

* "Of these, how many have freckles?"
* Look for shaded shapes among the children. Only the middle square is shaded.
* Answer: 1

* "Write the trait that the parents do not..." (The text cuts off, but usually asks for the trait the parents don't share or the recessive trait).
* Looking at the parents: The father does not have freckles. The mother does. The trait that appears in the children but not the father is freckles? No, the father lacks freckles.
* Usually, this question asks: "Write the trait that is recessive." Or "Which parent does not have the dominant trait?"
* Based on standard pedigree questions: The trait represented by unshaded shapes is No Freckles.

* "The parents have produced three offspring: a male and two females. One female is showing [trait]."
* Let's look at the females (circles). Both are unshaded.
* So, "One female is showing no freckles" (actually both are).
* Wait, let's re-read the visible text carefully: *"The parents have produced three offspring: a male and two females. One female is showing traits."* This sentence seems to be part of the problem description rather than a question to fill in, or it's cut off.
* However, looking at the very bottom right, there is a blank line. It likely asks for the genotype or phenotype of a specific individual. Without the full text, I will stick to the clear questions above.

* Genotype Deduction (Extra Context):
* Since Child 1 and Child 3 have no freckles (`ff`), they must have received one `f` from Mom and one `f` from Dad.
* Therefore, Mom MUST be `Ff` (Heterozygous). If she were `FF`, all kids would have freckles.
* Dad is `ff`.
* Mom is `Ff`.

Final Answer:

Here are the answers to fill in the blanks on the worksheet:

* In the squares represent: Males
* In the circles represent: Females
* How many offspring do the parents have? 3
* Of these, how many have freckles? 1
* Write the trait that the parents do not [share/have]: No Freckles (or "Recessive Trait")
* The parents have produced three offspring... One female is showing: No Freckles (Note: Both females show no freckles).