Progymnosperms had two derived features, which are:a
megaphylls and woody tissue.
b. microphylls and woody tissue.
c. megaphylls and herbaceous tissue.
d. microphylls and herbaceous tissue.
e. both megaphylls and microphylls and herbaceous tissue.
a
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The scientific method involves formulating a tentative explanation, called the hypothesis, to account for what has been observed or measured.
Answer the following statement true (T) or false (F)
A normal gene that codes for proteins involved in cell division is a(n) ____
Chapter 22 - Genes and Disease - Cancer Copyright Cengage Learning. Powered by Cognero. Page 4 a. proto-oncogene b. pre-oncogene c. post-oncogene d. dys-oncogene e. oncogene
In eukaryotic cells, sequences of mRNA removed before translation are called
A. introns. B. anticodons. C. exons. D. rRNA. E. terminators.
The IgG antibody is produced by:
a) T helper cells b) Neutrophils c) Dendritic cells d) Plasma cells