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Biology - Unit 7
Meiosis
Question | Answer |
---|---|
Process of combining egg & sperm | Fertilization |
An organized picture of chromosomes arranged in pairs | Karyotype |
Mitosis or Meiosis? Results in cells having half the number of chromosomes as somatic (body) cells | Meiosis |
Mitosis or Meiosis? Results in cells identical to the parent cell | Mitosis |
Mitosis or Meiosis? Crossing over occurs | Meiosis |
Mitosis or Meiosis? Has two rounds of cell division | Meiosis |
Mitosis or Meiosis? Homologous chromosomes pair up. | Meiosis |
Mitosis or Meiosis? Type of cell division used for growth. | Mitosis |
Mitosis or Meiosis? Type of cell division that occurs in sex cells. | Meiosis |
A dog has 78 chromosomes in her body cells. How many chromosomes would the dog have in her eggs? | 39 chromosomes |
Having 3 copies of a chromosome | Trisomy |
Having only 1 copy of a chromosome in body cells | Monosomy |
Trisomy 21 produces a range of symptoms known as _____. | Down Syndrome |
The sex chromosomes for a female are ____. | XX |
The sex chromosomes for a male are ____. | XY |
When chromosomes do not separate properly during Meiosis that is called ______________. | Nondisjunction |
A rice plant has 12 chromosomes in its body cells. How many chromosomes would be in a rice zygote? | 12 |
Which process creates more genetic variation in a population, sexual reproduction or asexual reproduction? | Sexual reproduction |
Mitosis or Meiosis? Used for asexual reproduction | Mitosis |
What kind of cells go through mitosis? | Somatic cells (body cells) |
What kind of cells go through meiosis? | Sex cells in testes and ovaries |
Name of the male gamete that's produced in the testes. | sperm |
Name of the female gamete that's produced in the ovaries. | egg (ovum) |
During fertilization, the sperm and the egg fuse together to form a _______________. | Zygote |
The process that produces gametes. It creates 4 haploid cells that are NOT identical. | Meiosis |
Number of gametes formed through meiosis | 4 |
Pair of chromosomes that are similar in shape and size and control the same traits. | Homologous chromosomes |
Homologous chromosomes are made up of 2 _________________. | Homologs (one from each parent) |
Phase of meiosis when synapsis and crossing over occurs. | Prophase I |
The process of synapsis forms _________________, where homologous chromosomes come together. | tetrads |
Are the homologous chromosomes separated in Meiosis I or Meiosis II? | Meiosis I |
Process in Prophase I where chromosomes exchange DNA creating new combinations of traits | Crossing over |
Part of Metaphase I where homologous chromosomes line up at random to create diversity in the offspring. | Independent Assortment |
Are sister chromatids separated in Meiosis I or Meiosis II? | Meiosis II |
Diploid (2n) number in humans. | 46 chromosomes (2 sets of 23, one set from mom, one set from dad). |
Haploid (n) number in humans. | 23 chromosomes (each parent will pass on 23 chromosomes to the offspring). |