Portage Learning BIOD 210 Genetics Final Exam
Questions with Correct Answers
100% Verified Graded A+
1. Haploid number in humans
Answer 23
2. Diploid number in humans
Answer 46
3. Which of the following is correct?
Sister chromatids are held together by cohesion.
Chromosome bodies are responsible for the formation of spindle fibers.
In metaphase, centromeres are dispersed throughout the nucleus.
Answer Sister chro- matids are held together by cohesion.
4. TRUE/FALSE
Genetic information can be transferred between bacteria on a single- stranded RNA
molecule called a plasmid.
Answer False
5. TRUE/FALSE
1/
11
, A chromosomal aberration is an alteration to the chromosome that results in a change to
the total number of chromosomes, deletions or additions to the chromosome, or even
complete rearrangement of chromosomal segments.
Answer - True
6. TRUE/FALSE
Most scientists believe that the biggest driver of a cancer phenotype is the ability of cance
cells to avoid apoptosis.
Answer False
7. Explain briefly how the idea of epigenesis and preformation directly contra- dict each
other
Answer Preformation postulated that a fertilized egg contained a minia- turized version of
a tiny human, called homunculus. Epigenesis directly contradicted that theory by stating
that a fertilized egg undergoes a series of developmental events that eventually form a
human.
8. Which of the following statements is correct?
The X chromosome is much larger than the Y chromosome. The X and Y
chromosomes share no homology.
The X chromosome is the driving determinant for sex of an offspring. Incorrect
2/
11
Questions with Correct Answers
100% Verified Graded A+
1. Haploid number in humans
Answer 23
2. Diploid number in humans
Answer 46
3. Which of the following is correct?
Sister chromatids are held together by cohesion.
Chromosome bodies are responsible for the formation of spindle fibers.
In metaphase, centromeres are dispersed throughout the nucleus.
Answer Sister chro- matids are held together by cohesion.
4. TRUE/FALSE
Genetic information can be transferred between bacteria on a single- stranded RNA
molecule called a plasmid.
Answer False
5. TRUE/FALSE
1/
11
, A chromosomal aberration is an alteration to the chromosome that results in a change to
the total number of chromosomes, deletions or additions to the chromosome, or even
complete rearrangement of chromosomal segments.
Answer - True
6. TRUE/FALSE
Most scientists believe that the biggest driver of a cancer phenotype is the ability of cance
cells to avoid apoptosis.
Answer False
7. Explain briefly how the idea of epigenesis and preformation directly contra- dict each
other
Answer Preformation postulated that a fertilized egg contained a minia- turized version of
a tiny human, called homunculus. Epigenesis directly contradicted that theory by stating
that a fertilized egg undergoes a series of developmental events that eventually form a
human.
8. Which of the following statements is correct?
The X chromosome is much larger than the Y chromosome. The X and Y
chromosomes share no homology.
The X chromosome is the driving determinant for sex of an offspring. Incorrect
2/
11
