Question Detail

BIO 201 Genetics 1 Objective Question
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Question

Non-disjunction of homologous chromosomes during Meiosis I results in which gametic outcome?
Options
A All four gametes have normal haploid numbers (n)
B Two gametes with (n + 1) and two gametes with (n - 1)
Correct Answer
C Two normal gametes (n), one (n + 1), and one (n - 1)
D Four completely nullisomic gametes (n - 2)
Correct Answer

Option B is the correct answer.

Detailed Explanation

Failure of homologous chromosomes to separate in Meiosis I causes all resultant gametes to be abnormal: 50% carry an extra chromosome (n + 1) and 50% lack that chromosome (n - 1).

Hint

No hint available

Question Info

Course: BIO 201
Topic: Genetics 1
Type: Objective
Difficulty: Not specified
Question 222 of 285
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