BIO 111 Test 3 Review

BIO 111 Test 3 Review

Test 3 Questions

​Prokaryote vs Eukaryote Review! (look at the DNA)

Eukaryotic chromosomes differ from prokaryotic chromosomes in that they

a.       Are simpler.

b.       Are circular in structure.

c.       Include fewer proteins.

d.       Are housed in a membrane-enclosed nucleus.

​Plans vs Animal Cytokinesis

Which of the following is a feature of plant cell division that distinguishes it from animal cell division?

a.       Production of four (rather than two) new cells per mitotic division.

b.       Lack of cytokinesis.

c.       Formation of a cleavage furrow.

d.       Formation of a cell plate.

Meiosis I Review!

At a chiasma, two _____ are attached to each other.

a.       Homologous or sister chromatids.

b.       Nonhomologous chromosomes.

c.       Homologous or nonsister chromatids.

d. Daughter cells.

​Mendel's 2nd Law- Law of Independent Assortment Review!

If independent assortment did not occur, which of the following would be true?

a.       Each sperm and egg would carry more than one allele for a specific gene.

b.       Genes for two different traits would be inherited together as a pair.

c.       A dihybrid cross of heterozygous individuals would yield four different phenotypes.

d.       Meiosis II would not be required to produce gametes, as meiosis I would be sufficient.

​Sex-Linked Traits Review!

​Females can be carriers for sex-linked traits because they have 2 X chromosomes, males cannot because they only have 1 X chromosome

Sex-linked conditions are more common in men than in women because

a.       Men need to inherit only one copy of the recessive allele for the condition to be fully expressed.

b.       Most genes associated with the sex-linked conditions are linked to the Y chromosome, which determines maleness.

c.       The sex chromosomes are more active in men than in women.

d.       Men acquire two copies of the defective gene during fertilization. 

​Sex-Linked Cross Review!

​Sons always know their Y chromosome from their father, but daughters get either X chromosome from either parent.

Maternal inheritance patterns from generation to generation cannot be analyzed by simply studying the X chromosome in the way that parental inheritance can follow the Y chromosome because

a.       The X chromosome is obtained from both the father and the mother

b.       One X chromosome is deactivated in females

c.       The X chromosome sometimes exchanges genetic information with the Y chromosome

d.       The X chromosomes is too large to analyze effectively

Open Ended

The questions used in this review were the most common questions asked about. If there are any questions I did not cover that you would still appreciate review on please put them here. If there are not, just put "no thanks"

Open Ended

Any questions I DID cover that you still do not understand and would like me explain a different way put here.