Biology 1100 - Principles of Biology » Fall 2019 » Quiz

Need help with your exam preparation?

Existing Quiz Clients Login here
Question #1
Let Y=yellow, y=green, R=round and r=wrinkled. You cross YYRR pease with yyrr peas. All of the F1 individuals are yellow and round with a genotype of YyRr. You then perform an F2 cross and get the expected 9:3:3:1 phenotypic ratio. What proportion of the F2 plants are expected to be heterozygous for both traits?
A.   1/2 (one half)
B.   1/4 (One fourth)
C.   1/16 (one sixteenth)
D.   9/16 (nine sixteenth)
Question #2
The physical basis for the segregation of alleles when gametes are formed is
A.   crossing over during prophase
B.   separation of homologous chromosomes during anaphase I followed by separation of sister chromatids during anaphase II
C.   separation of two strands of DNA during DNA replication
D.   separation of sister chromatids during anaphase I followed by separation of homologous chromosomes during anaphase II
Question #3
According to Mendel's Principle of Independent Assortment, __________
A.   dominant alleles assort independently of recessive alleles.
B.   each pair of alleles segregates independently of the other allele pairs
C.   the two alleles controlling a given trait remain discrete - they neither blend with nor alter each other
D.   each individual has two alleles controlling a given trait
Question #4
RFLPs can be used to tell the diffference between individual DNA samples because ________
A.   some DNA is more hydrophobic than others
B.   each person's DNA is slightly differen
C.   each human's DNA shares long, identical sequences
D.   centromeres and telomeres contain numerous repeats
Question #5
Bacteria can produce restriction enzymes without damaging their own cells because ___________
A.   restriction enzymes can only cut viral DNA
B.   viral and bacterial DNA are structurally distinct
C.   restriction enzymes are very specific
D.   restriction enzymes cut RNA

Need help with your exam preparation?

Existing Quiz Clients Login here