In contrast to the cell cycle of adult somatic cells, the dividing cells of an early embryo lack which cell cycle stage(s)?
A. M
B. S
C. G1 and G2
D. interphase
C. G1 and G2
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The variable region of a light chain is indicated by number
a. 1. b. 2. c. 3. d. 4. e. 5.
You are excited because your lab is studying the first microorganisms retrieved from Mars! Interestingly, their genetic material consists of a single-stranded nucleic acid with six different nitrogenous bases. Like organisms from Earth, segments of the nucleic acid contain the code for making proteins. If the genetic code in these organisms was read in groups of 2 bases instead of 3, what is the maximum number of amino acids that could be coded for assuming that only one codon functioned as a stop codon? (Enter your answer as a numeral, not a word; e.g., enter 17, not seventeen.)
Fill in the blank(s) with the appropriate word(s).
Demography is the study of how births and deaths change population sizes over time.
Answer the following statement true (T) or false (F)
How are the structures of RNA and DNA similar?
A. Their sugar-phosphate backbones are formed by phosphodiester linkages. B. Adenine pairs with thymine in both. C. They both have the same tertiary structure. D. They both contain the sugar ribose.