Biology Week 5 DNA and Traits quiz

Name: Period: Date:

Place the letter of the best answer in the blank beside the question number.

1.	A complex molecule responsible for the traits and characteristics of all organisms
.	A. ATP	B. RNA	C. DNA	D. none of these

2.	What would be the probable percent of colorblind children born to a man who is colorblind and a woman that is heterozygous normal vision?
.	A. 25%	B. 50%	C. 75%	D. 100%

3.	This nitrogen base is found only in RNA
.	A. adenine	B. thymine	C. uracil	D. none of these

4.	The process of duplicating the DNA molecule
.	A. replication	B. transcription	C. translation	D. none of these

5.	The father of modern genetics
.	A. Sutton	B. Rutherford	C. Punnett	D. none of these

6.	A trait in which the genes for the trait are the same
.	A. heterozygous	B. homozygous	C. polymorphic	D. none of these

7.	The offspring from parents
.	A. F1 generation	B. F2 generation	C. F3 generation	D. none of these

8.	The sugar found in DNA has this number of carbon atoms
.	A. four	B. five	C. six	D. none of these

9.	A segment of DNA on a chromosome that controls a particular trait
.	A. base	B. nucleotides	C. chromatid	D. none of these

True-false questions - use plus (+) to indicate true and zero (O) to indicate false.

10. A haploid cell contains only one chromosome of a pair.

11. While DNA is a double strand molecule, RNA is just a single strand.

12. The process of forming proteins is carried out by DNA.

13. Gregor Mendel proposed the chromosome theory in 1900.

14. The genetic makeup of an organism is known as its phenotype.

15. A Punnett square is used to determine the exact results of a genetic cross.

16. In a Punnett square, a capital letter represents a dominant trait.

17. Polygenic traits are controled by two or more genes.

18. There are 23 pairs of human chromosomes.

19. Karyotyping is used to analyze blood to determine the type.

20. The genotype BbLL can be read as heterozygous black fur, homozygous short fur.