The parents-to-be were shocked when an ultrasound scan done in the second trimester of the pregnancy showed a fetus with obviously broken leg bones and ribs. The doctor diagnosed osteogenesis imperfecta. This is caused by a mutation in a gene that encodes


A) beta globin.

B) a clotting factor.

C) myosin.

D) collagen.


D) collagen.

Biology & Microbiology

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Select all of the substances that are filetered from the blood by the glomerular capsult

A) Proteins B) water C) sugars D) ions E) Red blood cells

Biology & Microbiology

Refer to Figure 48-3. Hormonal regulation of sodium reabsorption occurs in the regions labeled:a

3 and 5. b. 6 and 8. c. 6, 7, and 8. d. 8 and 9. e. 9 and 10.

Biology & Microbiology

How are fungi differentiated from plants?

a. Fungi are heterotrophic. b. Fungi are photosynthetic. c. Fungi are all multicellular. d. Fungi do not bear roots underground. e. Fungi share characteristics with prokaryotes.

Biology & Microbiology

Which cluster of terms accurately reflects the nature of DNA replication in eukaryotes?

a. one origin of replication, bidirectional replication, conservative replication b. one origin of replication, unidirectional replication, conservative replication c. multiple origins of replication, bidirectional replication, semiconservative replication d. one origin of replication, bidirectional replication, semiconservative replication

Biology & Microbiology