Question

10/18
Codominance occurs in calico cats, which allows for the Black and Tan colors to show. What percentage of the offspring represented in this P square will be calico (black and tan spotted)?
50%
75%
100%
25%
Q
BBB
BT
BT
BBB
T
B

Answer 1

To determine the percentage of calico (black and tan spotted) offspring from the given P (parental) square, we need to clarify the symbols used in the P square.

Assuming:
- B = Black fur allele
- T = Tan fur allele

In a calico cat, codominance means that both alleles are expressed, resulting in the characteristic black and tan pattern.

From the provided P square:
```
B B
----------------
B | BB | BB |
----------------
T | BT | BT |
----------------
```

The offspring combinations are:
- **BB** (Black)
- **BB** (Black)
- **BT** (Calico)
- **BT** (Calico)

Now, we count the phenotypes:
- Black: 2 (BB)
- Calico: 2 (BT)

We have a total of 4 offspring:
- 2 black and 2 calico.

Now, we calculate the percentage of calico offspring:
- Calico: 2 out of 4
- Percentage = (2 calico / 4 total) * 100% = 50%

Thus, the percentage of the offspring that will be calico (black and tan spotted) is **50%**.