Unique features of skates and rays are their
a. gill slits.
b. adipose tissues.
c. flat bodies.
d. spiracles.
e. countershaded bodies.
D
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In natural samples it is often difficult to differentiate live cells from dead cells or cells from nonliving matter
Indicate whether the statement is true or false.
a. magnolias
a. the structure in which gametes are produced b. a type of haploid plant that produces gametes c. the growing point at the tip of a shoot d. the structure responsible for water transport
Before a desired gene can be spliced into a bacterial plasmid cloning vector, the gene must first be from the original DNA.
A. precisely cut, with a restriction enzyme, B. glued, with ligase, C. injected into a bacterial cell or a virus, having different sequences D. injected into a stem cell, to determine any unwanted traits E. All of the answer choices are correct.
Which of the following is most likely an accurate description of the genetic influences on ASD?
A) autosomal and epistatic B) monozygotic C) probably multi-genetic D) recessive, sex-linked