Mar 1, 2008

DNA Replication Test Question

During DNA replication, nucleotides are added to which end of the new DNA strand?

3' end
5' end
4' end
both ends at the same time
nucleotides are not the molecules that DNA is made of

Results of DNA Replication Test Question poll

Feb 1, 2008

DNA Base Pairing

If a segment of one strand of DNA has the base sequence A - T - A - G - G - C, what will be the base sequence at that point on the complimentary DNA strand? Poll now closed: Correct answer is #3

A - T - A - G - G - C
G - A - T - U - U - A
T - A - T - C - C - G
C - G - C - T - T - A
D - O - N - T - N - O

Results of DNA Base Pairing poll

Jan 1, 2008

Chromosome Number Human Gamete

A human cell has 46 chromosomes. How many chromosomes does a human gamete (egg or sperm) have? Poll now closed: Correct Answer #3.

46
92
23
15
4 + 6

Results of Chromosome Number Human Gamete poll

Dec 8, 2007

Example Punnet Square Question

This is a fun test question that I ask in my general biology class when I am testing them on genetics. See if you can answer it correctly! In cartoon sponges the allele for pants is dominant (P). A sponge having no pants has the recessive phenotype (genotype pp). Sponge Bob is heterozygous for the gene which controls whether cartoon sponges have pants. If he gets busy with a no pant lady sponge, what is the ratio of possible genotypes of their little sponge offspring? Poll now closed. Correct answer: #3 1 Pp : 1pp Half of their offspring will be heterozygous for pants and half will be recessive (no pants).

1 PP: 2 Pp : 1 pp
1 Pp : 1pp
1 PP : 1 pp
all PP
all pp

Results of Example Punnet Square Question poll