HOME THEORY MEDIA MISSION Click on the PC screen and draw the pedigree of Sif and Anton.

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HOME THEORY MEDIA MISSION Click on the PC screen and draw the pedigree of Sif and Anton. Look at the screen for instructions or raise the LabPad for more information. 1) To insert a symbol to create the pedigree, clicking on of the symbols in the top right. It will be highlighted in green. 2) Then click at the position in the pedigree where you want to place the symbol. 3) Click SUBMIT when you are done. You will get feedfack on your answers via highlightin in red or green, but be warned that you need to have both parents for each generation right to get the correct feedback. Information we have: – Sif and Anton’s unborn child is the person at the very bottom

The Correct Answer and Explanation is:

Correct Pedigree Drawing

Based on the information:

  • Sif and Anton’s unborn child is the individual at the very bottom of the pedigree. This means the unborn child is Generation III.
  • Therefore, Sif and Anton are the parents (Generation II).
  • To draw the pedigree correctly:
    1. Start by placing a female symbol (circle) for Sif and a male symbol (square) for Anton on the same horizontal line — this shows they are a couple.
    2. Connect Sif and Anton with a horizontal line (marriage line).
    3. Draw a vertical line down from the middle of that horizontal line, connecting to a symbol representing the unborn child. Usually, for an unborn child, a diamond symbol is used (if the sex is unknown), or a small circle/square if known.
    4. Above Sif and Anton (Generation I), include both of their sets of parents to meet the instruction that “you need to have both parents for each generation.”

So the final pedigree structure:

rustCopyEditGeneration I
Sif's Parents:    ◻︎ ─ ◯          Anton's Parents: ◻︎ ─ ◯

Generation II
Sif ◯ ─ ◻︎ Anton

Generation III
        ⬩ (unborn child)

Explanation

Pedigrees are standardized diagrams used in genetics to illustrate the relationships between individuals and trace inheritance patterns. In this task, we are told that the unborn child of Sif and Anton is located at the bottom of the pedigree chart, meaning they belong to the youngest generation—Generation III. To correctly draw the pedigree, it’s important to follow the conventions:

  • Squares represent males, and circles represent females.
  • A horizontal line between a male and a female indicates mating.
  • A vertical line descending from that mating line connects to their children.
  • If the sex of the child is unknown or the child is unborn, a diamond (⬩) is typically used.

To satisfy the condition that feedback is only accurate if both parents are correctly shown for each generation, we must also include both of Sif’s parents and both of Anton’s parents. That means Generation I must consist of two couples — one pair as Sif’s parents and the other as Anton’s.

Therefore, the pedigree will include three generations:

  • Generation I: Four individuals (Sif and Anton’s parents).
  • Generation II: Sif and Anton as a couple.
  • Generation III: One child (unborn).

By constructing this pedigree accurately using the correct symbols and connections, we ensure the diagram reflects the family structure and complies with the instructions. The software will validate this structure by highlighting correct placements in green and incorrect ones in red, so it is crucial that both sets of parents are shown in order to receive proper feedback.

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