Meiosis has evolutionary significance because it results in
| 1. | genetically similar daughters |
| 2. | four daughter cells |
| 3. | eggs and sperms |
| 4. | recombinations |
A bivalent consists of
| 1. | two chromatids and one centromere |
| 2. | two chromatids and two centromeres |
| 3. | four chromatids and two centromeres |
| 4. | four chromatids and four centromeres |
Synapsis occurs between
1. a male and a female gamete
2. mRNA and ribosomes
3. spindle fibres and centromere
4. two homologous chromosomes
During mitosis ER and nucleolus begin to disappear at.
| 1. | late prophase |
| 2. | early metaphase |
| 3. | late metaphase |
| 4. | early prophase |
Meiosis I:
| 1. | is always followed by interphase |
| 2. | is not followed by any period of rest |
| 3. | is followed by a period of interkinesis |
| 4. | is sometimes followed by interphase |
Bivalent chromosomes clearly appear as tetrads during:
1. Zygotene
2. Pachytene
3. Diplotene
4. Diakinesis
The beginning of diplotene is recognized by:
1. appearance of recombination nodules
2. crossing over
3. dissolution of synaptonemal complex
4. appearance of chiasmata
How do cells at the completion of meiosis compare with cells that have replicated their DNA and are just about to begin meiosis?
| 1. | They have twice the amount of cytoplasm and half the amount of DNA. |
| 2. | THey have half the number of chromosomes and half the amount DNA. |
| 3. | They have the same number of chromosomes and half the amount of DNA. |
| 4. | They have half the number of chromosomes and one-fourth the amount of DNA. |
In oocyte of some vertebrates, the stage of meiosis I that can last for months or years would be:
1. Zygotene
2. Pachytene
3. Diplotene
4. Diakinesis
At what phase of meiosis are homologous chromosomes separated ?
1. Prophase l
2. Prophase ll
3. Anaphase l
4. Anaphase ll
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