| Question | Answer |
|---|---|
| Offspring inherits from its parents a set of coded information known as… | Genes |
| Ova and sperm… | Sex Cells or Gametes |
| Pair of chromosomes in cells also known as… | Homologous Chromosomes |
| The number of chromosomes in a single set which varies among different species is known as… | Haploid |
| After fertilization..each gamete contributes its set of chromosomes to a newly formed cell also known as… | Zygote |
| The number of chromosomes in two complete sets is called the… | Diploid Number |
| In most simple terms meiosis: | separates the chromosomes of each homologous pair |
| Meiosis ultimately produces… | four genetically unique cells, each with half the number of chromosomes as in the parent |
| Meiosis is derived from Greek word…. | meaning 'lessening' |
| According to recent research scientists divide meiosis into 3 stages: | G1 (growth one) phase; Synthesis phase (S phase); Growth 2 (G Phase) |
| In what phase the most unique features of meiosis takes place? | Consider the first meiotic division! 1. During prophase one lie with side by side contact or synapsis forming bivalents 2. During metaphase one – bivalents align at spindle equator 3. chromosomes of former bivalents move to different poles |
| Genetic recombination between two chromosomes.. | during prophase members of each homologous pair undergo synapsis to bivalent which permits genetic recommendation between paired homologous chromosomes! |
| Ultimately, what are the final products of meiosis? | By the end of second meiotic division, the cells have a haploid number of chromosomes, and each chromatid of the original tetrad exists in the separate nucleus. Evidently, in female gametogenesis, only 1 out of 4 products become a functional gamete. |
| Species used in the first discovery of meiosis by German Biologist Oscar Hertwig | Sea Urchins…. |
| Compare function of meiosis and mitosis | MITOSIS: Cellular reproduction MEIOSIS: Sexual reproduction (sex cell reproduction) |
| Compare crossing over in meiosis and mitosis | MITOSIS: rarely MEIOSIS: Yes, typically between each pair of homologous chromosomes |
| Compare meiosis and mitosis – genetic similarity of produced cells | MEIOSIS: NO MITOSIS: YES |
| Compare mitosis and meiosis end result: | Meiosis: 4 cells- each with half the number of chromosomes as the parent Mitosis: 2 cells – having the same number of chromosomes as the parent |
