QQuestionBiology
QuestionBiology
What is the difference between monohybrid and dihybrid crosses?
A. Monohybrid crosses involve one gene; dihybrid crosses involve two genes.
B. Monohybrid crosses involve one allele; dihybrid crosses involve two alleles.
C. Monohybrid crosses are more complicated than dihybrid crosses.
D. Monohybrid crosses involve one organism; dihybrid crosses involve two organisms.
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Answer
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Step 1:I'll solve this problem step by step, focusing on the key differences between monohybrid and dihybrid crosses in genetics.
Step 2:: Understanding Monohybrid Crosses
A monohybrid cross involves the inheritance of a single gene with two different alleles. This means the cross is tracking the inheritance of one specific trait through generations. Key characteristics: - Involves only ONE gene - Tracks inheritance of a SINGLE trait - Examines how different alleles of that gene are passed to offspring
Step 3:: Understanding Dihybrid Crosses
A dihybrid cross involves the inheritance of TWO different genes simultaneously. This means the cross is tracking the inheritance of two separate traits at the same time. Key characteristics: - Involves TWO genes - Tracks inheritance of TWO different traits - Examines how alleles of two different genes are inherited together
Step 4:: Analyzing the Options
A. $$\checkmark$$ Correct: This precisely describes the difference between monohybrid and dihybrid crosses.
Let's evaluate each option: B. Incorrect: Both crosses involve alleles, just different numbers of genes. C. Incorrect: Complexity is not the defining difference. D. Incorrect: Both types of crosses can involve the same number of organisms.
Final Answer
Monohybrid crosses involve one gene; dihybrid crosses involve two genes.
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