Krystal Chow Bears • Genetics Explained
Blue & Lilac Possibilities in This Pairing
This page explains the genetic possibility of blue and lilac puppies from the pairing of Loki (black female) and Sterling (chocolate male), using simple genetics and realistic probability.
What “blue” and “lilac” mean genetically
Blue and lilac are both considered dilute colors. They occur when a puppy inherits two copies of the dilution gene (d/d).
- Blue = black pigment that has been diluted (B/_ + d/d)
- Lilac = chocolate pigment that has been diluted (b/b + d/d)
Dilution does not create new colors—it simply lightens the pigment that is already there.
What we know about Loki & Sterling
- Sterling (chocolate male) is genetically b/b
- Sterling’s father is lilac, meaning Sterling carries dilution (D/d)
- Sterling passes the chocolate gene (b) to 100% of puppies
- Loki (black female) carries chocolate (B/b)
- Loki’s dilution status is unknown without DNA testing
The gene that determines blue & lilac
For a puppy to be blue or lilac, it must inherit:
- d from mom
- d from dad
Sterling contributes d about half the time. Whether blue or lilac is possible depends entirely on whether Loki also carries dilution.
If Loki does NOT carry dilution (D/D)
- 0% blue
- 0% lilac
- Puppies may be chocolate or black-based
- Some puppies may carry dilution for future generations
If Loki DOES carry dilution (D/d)
- ~12.5% expected blue puppies
- ~12.5% expected lilac puppies
- ~37.5% chocolate puppies
- ~37.5% black-based puppies
Please note: These percentages reflect expected probability across many litters. Individual litters may vary due to small numbers. Blue and lilac are genetically possible—not guaranteed.
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