Meiosis and variation

1. Gametes would have which of the following:
   1. Half of the number of chromosomes found in body cells
   2. Homologous chromosomes
   3. Twice the number of chromosomes found in body cells
   4. The same number of chromosomes found in body cells
2. The number of chromosomes in a human muscle cell is 46, so how many are in a human egg cell?
   1. 23
   2. 46
   3. 92
   4. 24
3. If an organism's diploid number is 24, then it's haploid number is what?
   1. 12
   2. 48
   3. 36
   4. 24
4. Which of the following is NOT true about the chromosomes in your body?
   1. Exists in 23 pairs
   2. Exists in 46 pairs
   3. Includes 46 total chromosomes
   4. Includes 2 sex chromosomes
5. The structure with 4 chromatids is known as
   1. Tetrad
   2. Chromosome
   3. Homologous chromosomes
   4. Chromatid
6. Crossing over accomplishes what?
   1. DNA replication
   2. Identical sister chromatids
   3. Genetic recombination
   4. Fertilization
7. What is the correct definition of homologous chromosomes
   1. paired chromosomes that have the same genes at the same loci, but possibly different alleles.
   2. paired chromosomes that are identical to each other
   3. paired chromosomes that both come from the mother
   4. paired chromosomes with different genes on them
8. Which phase is it when homologous chromosomes line up in the middle of the cell?
   1. Anaphase II
   2. Metaphase II
   3. Metaphase I
   4. Anaphase I

Answer Key

1. A) Half of the number of chromosomes found in body cells
2. A) 23
3. A) 12
4. B) Exists in 46 pairs
5. A) Tetrad
6. C) Genetic recombination
7. A) paired chromosomes that have the same genes at the same loci, but possibly different alleles.
8. C) Metaphase I
9. C)