Which of the following does not describe a means of...

Name: which of the following does not describe a means of protozoan reproduction group of answer choices a conjugation pilus facilitates the exchange of genetic material between cells two cells fu 26294
Uploaded: 2021-07-29T01:56:32-08:00
Duration: 3 min 9 s
Channel: Joanna Quigley
Description: which of the following does not describe a means of protozoan reproduction group of answer choices a conjugation pilus facilitates the exchange of genetic material between cells two cells fu 26294

Which of the following does not describe a means of protozoan reproduction? Group of answer choices A conjugation pilus facilitates the exchange of genetic material between cells Two cells fuse, exchange genetic material, and then separate The nucleus undergoes multiple divisions before the cell divides Gametes fuse with one another to form a diploid zygote Mitosis

Transcript

00:01 Which of these statements is true of paramecium conjugation? a, cytoplasmic division produces four daughter cells.

00:12 B, one haploid micro nucleus in each cell is intact, the others degenerates, and then we get division of a micronucleus, an exchange of one of these with the other cell, and then fusion to give a diploid zygote micro nucleus.

00:28 C, the micronucous divides meotically, and then we get macronuclei, but divide in the cell, and the original macronucous breaks down.

00:40 D, the mating cells join at opposite sites of their oral depression.

00:46 For e, the macronucous undergoes mitosis.

00:49 When this mitosis is complete, there are four diploid macronuclei.

00:54 Okay, so these are some long statements, but this is all about paramecium conjugation.

00:59 We have two paramecium, shapes like this.

01:07 Each of them has an oral depression, and they join at this oral depression.

01:15 So they have a macro nucleus each.

01:20 I'm going to put the micro nucleus in blue.

01:24 There you go.

01:25 Okay, so the micro nucleus at this stage is diploid.

01:29 So, let's do some checks.