TLS Online TPP Program

#Question id: 5637


In an experiment, Sperm from mice carrying loss-of-function mutations in the Izumo gene. Which of the following statement is correct?

#Unit 5. Developmental Biology
  1. Sperm are not able to bind and penetrate the zona pellucida.

  2. Sperm are able to fuse with the egg cell membrane.

  3. Sperm are able to bind and penetrate the zona pellucida, but they are not able to fuse with the egg cell membrane.

  4. Sperm are able to bind and penetrate the egg jelly, but they are not able to fuse with the zona pellucida.