Signal molecules that determine relative positions during development are known as
A. inductors.
B. organizers.
C. cadherin domains.
D. derepressers.
E. morphogens.
E. morphogens.
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Homologues of the Nascent-chain-associated chaperone (NAC) protein folding system are found in bacteria, eukaryotes, and archaea.
Answer the following statement true (T) or false (F)
The ant Myrmecia pilosula is found in Australia and is named bulldog because of its aggressive behavior. It is particularly interesting because it carries all its genetic information in a single pair of chromosomes. In other words, 2n = 2
(Males are haploid and have just one chromosome.) Which of the following figures would most likely represent a correct configuration of chromosomes in a metaphase I cell of a female? A) A B) B C) C D) D E) E
Which of the following is an adaptation to increase the surface area of a part of a cell that is involved in cellular respiration?
A) the cristae of a mitochondrion B) the outer membrane of a chloroplast C) the grana of a chloroplast D) the endoplasmic reticulum
Intraspecific competition limits population size
Indicate whether the statement is true or false