Embryo twinning refers to ________
A) a cloning step that involves enucleation
B) a cloning step that involves splitting embryos in half
C) a technique used in only primate cloning
D) a novel technique not yet employed by scientists
E) a cloning step that involves one half of an embryo
B
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Influenza is an acute human viral disease that causes brief cellular damage followed by healing and complete clearing of the virus from the body
Hepatitis C is a chronic viral disease that causes slow destruction of tissue and persistent virions that are not completely cleared. Which of these diseases is more likely to be caused by lytic virus and which is caused by a lysogenic virus? What will be an ideal response?
In which of the following is primary productivity highest?
A. tropical forests B. prairies C. cool deserts D. hot deserts E. the Arctic
Alleles are defined as ________
a. paired chromosomes with the same size and shape b. different genes c. different forms of a gene d. genetically identical copies of an individual
Refer to the accompanying figure. What fungal structure is comprised of a mass of threadlike strands of cells, attached
one to the other? a. mycelium b. protistans c. mycorrhizae d. stolons e. rhizoids