| A | B |
|---|
| The number of different types of chromosomes in a gamete is represented by the letter ___. | n |
| A carrot has a diploid number of 18. What is its haploid number? | 9 |
| Gametes are produced by the process of ___. | meiosis, 
|
| Another word for sex cell is ___. | gamete |
| What are the two main types of gametes? | sperm and egg |
| During which stage of meiosis do chromosomes form tetrads? | prophase I |
| During which stage of meiosis do homologous chromosome pairs line up in the middle of the cell? | metaphase I |
| During which stage of meiosis do sister chromatids separate from each other? | anaphase II |
| What happens between meiosis I and meiosis II that reduces the number of chromosomes? | DNA replication does not occur. |
| When does the DNA replication involved with meiosis occur? | Interphase I only (remember, there is no interphase II, and technically, interphase is not a stage of meiosis. It occurs before meiosis) |
| What is the diploid number of chromosomes in humans? | 46 (also written as 2n=46) |
| What is the haploid number for humans? | 23 (also written as n=23) |
| The sex cells of fruit flies have 4 chromosomes each. What is the diploid number of chromosomes for fruit flies? | 8 (remember the diploid number is always twice the haploid number) |
| _________ chromosomes are chromosomes that have the same types of genes, but are not identical. | Homologous,
|
| _________ are chromosomes that have the same types of genes, and are identical. | Sister chromatids |
| A(n) _____ is a segment of DNA that has the instructions for making one protein. | gene |
| A chromosome is made of ___ DNA molecule(s) | one |
| When two homologous chromosome pairs are lined up right next to each other during meiosis, they are referred to as a ___. | tetrad |
| An organism's gametes have ___ the number of chromosomes as are found in the organism's body cells. | half |
| During which stage of meiosis might crossing over occur? | prophase I |
| When homologous chromosomes are lined up next to each other during meiosis, they might swap pieces of DNA. This phenomenon is called ___. | crossing over |
| Crossing over during meiosis is important because it increases ___. | genetic variation (= the number of different chromosomes, and therefore different combinations of traits, that offspring can inherit) |
Which diagram is mitosis and which is meiosis?,  | Mitosis is on the left and meiosis is on the right., |
When chromosomes are lined up like this during meiosis, what are they referred to as?,  | A tetrad, |
Which process from meiosis is shown below and during which stage would it occur?,  | The picture shows "crossing over" and it usually happens during prophase I., |
| True or false: Meiosis is an example of sexual reproduction. | False (Meiosis is something that needs to occur before sexual reproduction can occur, because you need sex cells in order for sexual reproduction to happen. But the production of gametes is not sexual reproduction) |
| True or false: Interphase is part of meiosis. | False (Interphase is something that occurs before meiosis) |
