Download 26. During interphase each chromosome replicates to two

Name ________________________________________ Class _______ Date ____________
Final Vocabulary Check up
Directions: Fill in the blanks with words from word bank.
gene
fertilization
DNA
allele
sperm
mitosis
heredity
egg
sexual reproduction
gamete
phenotype
Punnett square
genotype
recessive
dominant
probability
1. When a sperm and egg combine to form one new cell. _______________________________
2. A gamete that forms in the reproductive organs of a female. _______________________________
3. A unit of heredity that occupies a specific location on a chromosome and codes for a particular
product. _______________________________
4. The genes an organism has, or its genetic constitution. _______________________________
5. The allele that is expressed in the phenotype when two copies of it are present on the homologs.
__________________________________
6. The actual characteristics an organism has. _______________________________
7. The various forms of the same gene. _______________________________
8. A gamete that forms in the reproductive organs of a male. _______________________________
9. Illustrates how the parents’ alleles might combine in offspring. _______________________________
10. The passing of genes from parents to offspring. _______________________________
11. The type of cell division an exact duplicate of the parent cell is __________________________.
12. The allele that is expressed in the phenotype even if it is the only copy present in the genotype.
_______________________________
13. Cells that contain half the usual number of chromosomes—one chromosome from each pair.
_______________________________
14. The process in which a cell containing genetic information from the mother and a cell containing
genetic information from the father combine into a completely new cell, which becomes the offspring.
_______________________________
15. The chance that something will occur. _______________________________
16. The abbreviation for deoxyribonucleic acid is __________________________.
heterozygous
DNA
sexual reproduction
Punnett square
chromatids
one-half
homozygous
chromosomes
cell cycle
parent
meiosis
cell
recessive
gene
genetics
clone
traits
mutation
chromosomes
nucleus
17. _____________________ are physical characteristics of an organism that are passed down from one
generation to the next.
18. ___________________________ are rod-shaped structures found in the nucleus of every cell in an
organism.
19. _________________________________________ is a chart used to show the possible gene
combinations in across between two organisms
20. A ________________________________________ allele pair that consists of a dominant allele and a
recessive allele.
21. A _______________________________________ trait seems to disappear when two different alleles
for the same trait are present.
22. Organisms inherit genes in pairs, one from each _____________________________.
23. _________________________________ is the study of heredity.
24. Interphase, mitosis and cytokinesis are stages of the __________________________
25. What is the information molecule? __________________________
26. During interphase each chromosome replicates to two __________________________
27. What is the segment of DNA controlling one of our traits? __________________________
28. What is an exact genetic copy? __________________________
29. During prophase, the DNA condenses into these? __________________________
31. The fraction of chromosomes a sperm or egg has? __________________________
32. The organelle that houses the genetic material? __________________________
33. The smallest unit able to perform the basic functions of life __________________________
34. Any change made to the DNA molecule? __________________________
35. If the two alleles for a gene, are both dominant or both recessive, we say they are
__________________________.
36. During fertilization, chromosomes with similar genes pair up. These pairs are called
_______________________________________________.
37. The type of cell division that produces a sperm or an egg. ________________________
alleles
phenotype
genes
gametes
B. WHAT IS THIS?
Write the vocabulary word on the line that best fi ts each description.
39. Each parent has two of these for a particular gene. ________________
40. These are found only in the reproductive organs of plants and animals. ________________
41. You inherit these from your parents, and these code for the traits you have. ________________
42. Your height and the size of your feet are observable traits and part of this. ________________
B. WHAT IS THIS?
Write the vocabulary word on the line that best fi ts each description.
43. Each parent has two of these for a particular gene. ________________
44. These are found only in the reproductive organs of plants and animals. ________________
45. You inherit these from your parents, and these code for the traits you have. ________________
46. Your height and the size of your feet are observable traits and part of this. ________________