Mouse Genetics Crossword Puzzle

2. a characteristic of an organism. Examples of traits include skin color, eye color, hair, allergies, and many others.
5. the genetic makeup of an organism.
6. having two alleles that are the same.
9. an allele that is not expressed when the dominant allele is present. Recessive alleles are usually represented by lowercase letters, such as f.
13. an allele that is always expressed when it is present. Dominant alleles are usually represented by capital letters, such as F.

1. a diagram that shows the possible offspring of two parents. Punnett squares allow you to determine the probability of each offspring genotype.
3. the passage of genetic material from parents to offspring. For each gene, an organism receives one allele from each parent.
4. a molecule found in the cell nucleus that encodes genetic information. DNA is short for deoxyribonucleic acid.
6. the offspring of genetically different parents. For example, the offspring of pure FF and ff parents is an Ff hybrid.
7. having two alleles that are different.
8. a segment of DNA that determines or helps to determine a trait. Most genes give instructions for building a particular protein. Many familiar traits are determined by several genes.
10. the passage of genetic information from a parent or parents to offspring.
11. one of two or more forms that a gene could take.
12. the physical appearance of an organism. Organisms with different genotypes can have the same phenotype. For example, an FF mouse and an Ff mouse both have black fur.