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Meiosis - Review
Review of meiosis
| Question | Answer |
|---|---|
| THE # OF CHROMOSOMES IN AN ORGANISM ____ ___ ____ FROM GENERATION TO GENERATION. | STAYS THE SAME |
| ALL THE BODY CELLS OF AN ORGANISM HAVE ___ ___ # OF CHROMOSOMES. | THE SAME |
| DO ANIMALS AND FLOWERING PLANTS HAVE PAIRED CHROMOSOMES? | YES |
| HUMAN BODY CELLS HAVE __ PAIRS OF CHROMOSOMES. | 23 |
| CELLS HAVING TWO OF EACH CHROMOSOME ARE ____ CELLS. | DIPLOID |
| THE DIPLOID # OF CHROMOSOMES IS REPRESENTED BY ___. | 2N |
| THE DIPLOID # OF CHROMOSOMES IS ____. | 46 |
| TWO MEMBERS OF A PAIR OF CHROMOSOMES ARE ____ CHROMOSOMES. | HOMOLOGOUS |
| WHEN 2 ORGANISMS MATE, THEY PRODUCE A SINGLE FERTILIZED EGG CALLED A ____. | ZYGOTE |
| A ZYGOTE RESULTS FROM THE UNION OF ____ AND ____ CELLS. | EGGS; SPERM |
| MEIOSIS OCCURS IN ALL ____ CELLS. | SEX CELLS |
| AN EGG IS A | GAMETE |
| A SPERM CELL IS A | GAMETE |
| A ZYGOTE IS A | FERTILIZED EGG |
| # OF CHROMOSOMES IN AN EGG | 23 |
| # OF CHROMOSOMES IN A SPERM CELL | 23 |
| # OF CHROMOSOMES IN A ZYGOTE | 46 |
| ARE EGGS HAPLOID OR DIPLOID? | HAPLOID |
| ARE SPERM CELLS HAPLOID OR DIPLOID? | HAPLOID |
| IS A ZYGOTE HAPLOID OR DIPLOID? | DIPLOID |
| ARE EGG CELLS REPRESENTED BY N OR 2N? | N |
| ARE SPERM CELLS REPRESENTED BY N OR 2N? | N |
| ARE ZYGOTES REPRESENTED BY N OR 2N? | 2N |
| ARE EGGS PRODUCED AS THE RESULT OF MEIOSIS? | YES |
| ARE SPERM CELLS PRODUCED AS THE RESULT OF MEIOSIS? | YES |
| IS A ZYGOTE PRODUCED AS THE RESULT OF MEIOSIS? | NO |
| ARE EGGS PRODUCED AS A RESULT OF FERTILIZATION? | NO |
| ARE SPERM CELLS PRODUCED AS A RESULT OF FERTILIZATION? | NO |
| IS A ZYGOTE PRODUCED AS A RESULT OF FERTILIZATION? | YES |
| # OF CHROMOSOMES PRODUCED BY MITOSIS | 2 IDENTICAL DIPLOID CELLS |
| # OF CHROMOSOMES PRODUCED BY MEIOSIS | 4 GENETICALLY DIFFERENT HAPLOID CELLS |
| HOW IS THE FORMATION OF GAMETES DIFFERENT IN MALES AND FEMALES? | BOTH ARE FORMED BY MEIOSIS; SPERM IN MALES AND EGG IN FEMALES; 4:1 OF SPERM TO EGG CELLS; SPERM FORMED IN TESTES AND EGG FORMED IN OVARIES; SEE CHART. |
| FUNCTION I OF MEIOSIS: TO MAKE NEW _____ OF GENETIC MATERIAL | COMBINATIONS |
| FUNCTION II OF MEIOSIS: TO REDUCE THE ____ # BY ____. | CHROMOSOME; HALF |
| MEIOSIS I: 46 TO ___ SETS OF ___. | 2; 23 |
| MEIOSIS II: 2 SETS OF 23 TO ____ SETS OF ____. | 4; 23 |
| THE PRODUCTS OF MEIOSIS ARE: | GAMETES (SPERM AND EGG CELLS) |
| OUT OF THE ___CHROMOSOMES, ___ ARE AUTOSOMES AND ___ ARE SEX CHROMOSOMES. | 46; 44; 2 |
| IN MALES, SPERM HAS ___ AUTOSOMES AND AN ___ OR ___. | 22; X; Y |
| IN FEMALES, EGGS HAVE ____ AUTOSOMES AND AN ___. | 22; X |
| OOGENESIS IS THE: | CREATION OF EGG |
| SPERMATOGENESIS IS THE: | CREATION OF SPERM |
| OOGENESIS IS | FEMALE MEIOSIS |
| SPERMATOGENESIS IS | MALE MEIOSIS |
| LOCATION OF OOGENESIS: | OVARIES |
| LOCATION OF SPERMATOGENESIS: | TESTES |
| WHAT DOES IS OOGENESIS PRODUCE? | 1 FUNCTIONAL EGG, 3 POLAR BODIES |
| WHAT DOES SPERMATOGENESIS PRODUCE? | 4 FUNCTIONAL SPERM CELLS |
| WHEN DOES OOGENESIS START? | FEMALES BORN WITH ALL EGGS, BUT ARE PAUSED IN PROPHASE I; CELLS CONTINUE MEIOSIS AT PUBERTY; STOPS AT MENOPAUSE |
| WHEN DOES SPERMATOGENESIS START? | STARTS AT PUBERTY; GOES THROUGH REPRODUCTIVE YEARS |
| NO PAIRING OF HOMOLOGOUS CHROMOSOMES OCCURS IN: | MITOSIS |
| TWO DIVISIONS OCCUR IN: | MEIOSIS |
| FOUR DAUGHTER CELLS PRODUCED IN: | MEIOSIS |
| ASSOCIATED WITH GROWTH AND ASEXUAL REPRODUCTION: | MITOSIS |
| ASSOCIATED WITH SEXUAL REPRODUCTION: | MEIOSIS |
| ONE DIVISION: | MITOSIS |
| TWO DAUGHTER CELLS PRODUCED: | MITOSIS |
| INVOLVES DUPLICATION OF CHROMOSOMES: | BOTH MITOSIS AND MEIOSIS |
| CHROMOSOME # IS MAINTAINED: | MITOSIS |
| CHROMOSOME # IS HALVED: | MEIOSIS |
| CROSSING OVER BETWEEN CHROMOSOMES MAY OCCUR: | MEIOSIS |
| DAUGHTER CELLS ARE IDENTICAL TO PARENT CELL: | MITOSIS |
| DAUGHTER CELLS ARE NOT IDENTICAL TO PARENT CELL: | MEIOSIS |
| PRODUCES GAMETES: | MEIOSIS |
| INTERPHASE: | DNA IS COPIED; CENTRIOLES REPLICATED; CELL PREPARES TO DIVIDE |
| PROPHASE I: | CHROMOSOMES CONDENSE; SPINDLE FIBERS APPEAR; NUCLEAR MEMBRANE AND NUCLEOLUS DISAPPEAR; CENTROMERES GO TO OPPOSITE POLES; TETRADS LINE UP AND CROSSING OVER OCCURS |
| METAPHASE I: | TETRADS LINE UP RANDOMLY AT THE EQUATOR |
| ANAPHASE I: | CHROMOSOME PAIRS ARE SPLIT UP AND MOVE TO OPPOSITE POLES; CELL ELONGATES; SPINDLE FIBERS STRETCH; CHANGES FROM DIPLOID TO HAPLOID |
| TELOPHASE I: | CYTOPLASM DIVIDES, FORMING 2 NEW CELLS; EACH CELL HAS HALF OF CHROMOSOMES IT STARTED WITH; GOES DIRECTLY INTO MEIOSIS 2 |
| PROPHASE II: | SPINDLE FIBERS REAPPEAR; NUCLEAR MEMBRANE DISAPPEARS; NO CROSSING OVER, NO TETRADS, NO REPLICATION |
| METAPHASE II: | CHROMOSOMES LINE UP INDIVIDUALLY AT EQUATOR |
| ANAPHASE II: | CELL ELONGATES AND PREPARES TO DIVIDE; SPINDLE FIBERS AND CENTRIOLES STILL INTACT; SISTER CHROMATIDS SEPARATE AND MOVE TO OPPOSITE POLES |
| TELOPHASE II: | CYTOPLASM DIVIDES AND CELL SPLITS; EACH CELL I GENETICALLY SIMILAR TO THE ORIGINAL PARENT CELL, BUT NOT IDENTICAL; EACH DAUGHTER NUCLEI IS HAPLOID |
Created by:
mma129
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