The form of native DNA, referring to its two adjacent polynucleotide strands interwound into a spiral shape
What will be an ideal response?
Double Helix
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Comparative genomics helps us to understand evolutionary relationships between organisms
Indicate whether the statement is true or false.
Which of the following prenatal tests can be
performed earliest in a pregnancy?
a. amniocentesis b. obstetric sonography c. fetoscopy d. chorionic villus sampling e. preimplantation genetic diagnosis
While touring the ancient Egypt exhibit at the local history museum, you learn that ancient Egyptians would slash figs in order to stimulate ripening. Based on your knowledge of plant hormones you hypothesize that wounding the figs must release:
A. ethylene. B. gibberellin. C. abscisic acid. D. cytokinin. E. indoleacetic acid.
Answer the following questions true (T) or false (F)
1. Some species of mosses have pollen that does not have to move through water to reach an egg. 2. Endosperm is the nutritional tissue found within a seed. 3. A single type of pinecone is responsible for the production of both pollen and eggs.