Skip to content
Solved Assignments

Amoeba Sisters Video Recap of Meiosis

Review the steps and significance of meiosis with this Amoeba Sisters video recap—learn about chromosome numbers, crossing over, and errors like nondisjunction, all while exploring how genetic variation is created in gametes.

Preview 1 of 2 pages

See the first page exactly as it appears in the document.

  1. Page 1
    Read page 1 as text

    Amoeba Sisters Video Recap of Me/os/s 1. The purpose of meiosis is to make gametes, also known as sperm and egg cells. In humans, your body cells have 46 chromosomes. How many chromosomes are i n a sperm o r egg cell if, when they come together to form a fertilized zygote, there are 46 chromosomes? Write the correct number of chromosomes next to the sperm and egg. 2. Interphase must occur once before meiosis can happen. (Same thing for mitosis). What would happen if interphase didn't occur first? 3. A cell that begins meiosis has 23 chromosomes inherited from the mother (shown in green in the cartoon below) and 23 chromosomes inherited from the father (shown i n blue in the cartoon below). In the process of meiosis, chromosomes begin to match up in homologous pairs. How would you know if two chromosomes were homologous? they would be slmilann shape and size f be cell wtHjidnt grow 23 4. Crossing over is a very important event i n Prophase I o f meiosis! What haooens during crossing over and what is the significance? 5. Meiosis does PM AT twice ! That 6. Meiosis does not always occur without any difficulties. Describe what occurs during nondisjunction and the effect on the resulting cells. Chromosomes might not separate correctly and this Crtr, eauxa gtnalk -------------------------- means there is a prophase I and a prophase II. There is a metaphase I and a metaphase II. Etc... If the cartoon below has chromosomes in the middle of the cell, how would you know whether it was in metaphase I or metaphase II? in mclophnsc 1 chromosomes aro lined up with homologous pairs and ulin niuuiphMMrrETircTTiBMnHei J i i llftj/i up tot tha mi<4rfl» fit rail _ _ _ _ _ aerjmwrt* ot ehramen-OTHes are e x c h a n g e d , t h i s i s slanrfhaant _ _ _ brcauso this crratr-s variation d in parent gene i Amoeba Sisters LLC ©All iVghts reserved

1 more page in the full document

Unlock it once and it stays in your library, ready to chat with or turn into flashcards.

Unlock the full document

More Biology study materials

See all

Study this document with CramX

Once it is in your library, every tool can work from it.