DNA is a helical molecule consisting of two strands of ____________________ that is the primary carrier of
____________________ information. Fill in the blank(s) with the appropriate word(s).
ANSWER: nucleotides, genetic
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What region of the 5-week embryo gives rise to the midbrain?
a. telencephalon b. diencephalon c. mesencephalon d. metencephalon e. myelencephalon
Which feature is not an adaptation for fight?
a. Wings are covered in feathers b. Denser bone mass c. Forelimbs evolved into wings d. Standing upright e. Enlarged sternum for flight muscle attachment
Genes A and B are on different chromosomes. A dihybrid with the genotype AaBb undergoes meiosis. Which of the following depicts a possible genotype in a gamete?
A) Aa B) Bb C) AB D) A E) B F) AaBb
Refer to Figure 31-5. Which number has been placed on the dorsal surface?
A. 1
B. 2
C. 3
D. 4
E. 8