There are no microorganisms that can cross the transplacental barrier, so fetuses are protected until birth.
a. true
b. false
Ans: b. false
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What does a "run of homozygosity" indicate?
A) A recent common ancestor B) An ancient common ancestor C) Consanguineous ancestry D) Nondisjunction in a parent
The conducting cells in phloem are
A. sieve tube elements. B. vessel elements. C. stomata. D. tracheids. E. companion cells.
Phosphatase enzymes
A) add phosphate groups. B) always inhibit target molecule activity. C) bind tightly by wrapping around a target molecule to regulate its activity. D) remove phosphate groups. E) metabolize glucose.
This field of biotechnology examines the proteins that are predicted from the DNA sequence from which scientists can identify gene families and how humans may have evolved at a molecular level.
A. genomics B. transcriptomics C. proteomics D. cloning technology