1. Q: Passing of genes from
parents to offspring

2. A: Heredity

3. Q: Thin strands of DNA in the cell
nucleus that carry the genetic
code.

4. A: Chromosomes

5. Q: Where hereditary information
is found in the body.
Units of DNA.

6. A: Genes

7. Q: Inheritable characteristics of
parents.
(Hair and eye color, height, blood type,
musical ability)

8. A: Traits

9. Q: Stronger trait that will show
up in offspring.

10. A: Dominant Trait

11. Q: Weaker trait that won’t show
up but doesn’t go away.
May appear in later pairings.

12. A: Recessive Trait

13. Q: A different form a gene may
have for a trait (Ex: R or r)

14. A: Alleles

15. Q: The genetic make-up of an
organism for a trait.

16. A: Genotype

17. Q: A physical trait (eye color,
hair color) that shows up as a
result of an organism’s
particular genotype.

18. A: Phenotype

19. Q: The form of a trait that is the
most common in a population
because only one allele is
needed for it to show.
Ex: R in Rr

20. A: Dominant

21. Q: The form of a trait that tends
to disappear in a population
because to show up, two alleles
of this are needed.
Ex: r in r r

22. A: Recessive

23. Q: An organism that has two
identical alleles for a trait.
Ex: R R

24. A: Homozygous

25. Q: An organism that has two
different alleles for a trait.
Ex: R r

26. A: Heterozygous

27. Q: Diagram that shows the
probability of an offspring
showing a particular trait.

28. A: Punnett Square

29. Q: Charts showing hereditary
traits in family members

30. A: Pedigrees

31. Q: Methods used by scientists
to change an organism’s DNA.

32. A: Genetic Engineering

33. Q: Scientist who first described
how traits are passed from
generation to generation.

34. A: Gregor Mendel