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block

An excellent example of the genetic phenomenon known as continuous variation would be:

Select the correct answer(s).  

(0/0)

---

a flower color in plants. Human blood groups

epistasis

height of humans

none

To avoid problems associated with gene dosage issues, human females convert one X chromosome into a/an:

Select the correct answer(s).  

(0/0)

---

Centromere

centrosome

telomere

Barr Body

none

If Mendel had crossed a plant with red flowers with a plant that produced white flowers and had obtained pink flowers, assuming he wasn’t color blind, he would have discovered:

Select the correct answer(s).  

(0/0)

---

pleotropism

incomplete dominance

epistasis

multiple allele expression

none

An example of a type of nuclease commonly used in biotechnology that cuts DNA molecules at specific sequences is:

Select the correct answer(s).  

(0/0)

---

gyrase

Rnase A

DNA Polymerase

a restriction endonuclease

none

The gene for the repressor of the lac operon is expressed in a _______ fashion.

Select the correct answer(s).  

(0/0)

---

inducible

repressible

constitutive

oncogenic

none

Which of the following properties are not true in the context of the presently accepted model for DNA Structure

Select the correct answer(s).  

(0/0)

---

DNA is a double heli

Nucleotides are connected to each other by phophodiester bonds

the two strands of the molecule are described as running parallel to each other

Two strands of molecules are held to each other by hydrogen bonds

with the duplex having a 3' end a a 5' head

none

The term which best describes “the manipulation of organisms or their components to make useful products is:

Select the correct answer(s).  

(0/0)

---

genetic engineering

biotechnology

molecular biology

directed mutagenesis

none

Aneuploid cells are almost always created as a result of:

Select the correct answer(s).  

(0/0)

---

translocation

chromosomal deletion.

nondisjuction

unequal crossing over

none

Which of the following is not true with respect to DNA polymerase III of E. coli?

Select the correct answer(s).  

(0/0)

---

All of the above are properties of DNAP III.

It catalyzes the polymerization of nucleotides in the 5’ to 3’ direction

it carries out the process of nick translation during replication

It is part of the replisome complex

none

A dihybrid cross is carried out using a homozygous dominant plant (PPAA) and a homozygous recessive plant (ppaa). The F1 generation is then self-crossed to produce the F2 generation. The phenotypic or Mendelian ratio of the offspring will be:

Select the correct answer(s).  

(0/0)

---

9:3:3:1

3:1

1:3

none

The person(s) commonly recognized to have been the first to suggest that genes dictate phenotypes through enzymes that catalyze specific reactions in a cell’s metabolism (based upon observations of a human genetic-based disorder) was/were:

Select the correct answer(s).  

(0/0)

---

Phoebus Levine

Archibald Garrod

Hershey and Chase

Beadle and Tatum

none

A likely example of an aneuploid human cell would be one that has ___chromosomes

Select the correct answer(s).  

(0/0)

---

23

69

46

47

none

Alternate versions of a gene (genetic variations) are termed:

Select the correct answer(s).  

(0/0)

---

alleles

introns

haplotypes

heterozygotes

none

Proteins that are destined for secretion are targeted to the rough ER by:

Select the correct answer(s).  

(0/0)

---

a sequence of amino acids at the N-terminus of the polypeptide

a sequence in the 5'UTR

the cap of the 5-end of the mRNa

none

A pattern of histone modifications in a section of chromatin, or a pattern of DNA methylation, is passed on to subsequent cell generations in a fashion that effects the expression of the encoded genetic information. These would be examples of:

Select the correct answer(s).  

(0/0)

---

epistasis

epigenetics

inducible gene expresion

repressible gene expression