If nondisjunction occurs during meiosis, only two gametes may form instead of four. Some gametes may have an extra copy of a chromosome. The gamete cannot join another to form an organism. The gametes redistribute chromosomes after meiosis.
Added by Roberto R.
Step 1
Step 1: Non-disjunction can occur during meiosis, leading to an unequal distribution of chromosomes in the resulting gametes. Show more…
Show all steps
Your feedback will help us improve your experience
Kerissa Bures and 80 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
If nondisjunction occurs in meiosis II during gametogenesis, what will be the result at the completion of meiosis? Select one: a. 1/4 of the gametes will be n + 1, 1/4 will be n - 1, and 1/2 will be n. b. There will be three extra gametes. c. All the gametes will be diploid. d. Two of the four gametes will be haploid, and two will be diploid. e. Half of the gametes will be n + 1, and half will be n - 1.
Rupsa S.
Number of chromosomes (n) in gametes Nondisjunction event Meiosis occurs normally (no nondisjunction) 0 or 3 Nondisjunction of one chromosome pair in meiosis 0 or 2 2 or 4 Nondisjunction of all three chromosome pairs in meiosis (assume all chromosomes go to the same pole) 0, 3, or 6 2 or 4 Nondisjunction of one chromosome in one daughter cell in meiosis II Nondisjunction of all three chromosomes in one daughter cell in meiosis II (assume all chromosomes go to the same pole)
Madhur L.
Nondisjunction at meiosis can result in _________. a. karyotyping b. crossing over c. duplications d. aneuploidy
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD