本题目来源于试卷: SL/HL Topic D3.2 Inheritance，类别为 IB生物学
[单选题]
3. In Labrador dogs, cts kzv: a -3z(rcm786z+sqkb8r * pc0ru4v4y shvv.dblack coat is dominant over chocolate coat. The genotype of a black male labrador is unknown. How can the genotype of this black Labrador be determivs4d vp*h0u4ry rc8v .ned?
A. By using a PCR test.
B. By a cross with a chocolate female labrador.
C. By a cross with a black female labrador.
D. By mating the male with a white female dog.
参考答案: B
本题详细解析:
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