When a caterpillar spins a cocoon, this is
A. learned behavior.
B. imprinting.
C. unlearned (instinctive) behavior.
D. a conditioned response.
C. unlearned (instinctive) behavior.
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Sometimes the DNA marker allele and a QTL occur together more frequently than would otherwise be expected, either because they interact or because of natural selection. What term describes this?
What will be an ideal response?
The rough ER and the smooth ER are distinguished from each other by
A) the presence or absence of membrane-bound ribosomes. B) the presence or absence of membrane-bound ribosomes and the synthesis of lipids by the rough ER and the synthesis of proteins by the smooth ER. C) synthesis of lipids by the rough ER and synthesis of proteins by the smooth ER. D) the presence or absence of both DNA and membrane-bound ribosomes. E) the presence of absence of DNA.
Human diploid cells have ____ chromosomes while human gametes have ____ chromosomes
a. 46; 23 b. 23; 46 c. 96; 48 d. 48; 96
e. 46; 92The following are all biological molecules utilized in the bodies of marine animals, except
a. chitin. b. triglycerides. c. glycogen. d. cellulose. e. enzymes.