The option which is not a characteristic of chordates is chloroplasts in their cells.
Chordates do have a dorsal supporting rod (vertebrates are types of chordates - they have a spine), a dorsal hollow nerve cord (within the spine), and pharyngeal pouches. However, they do not have chloroplasts, because that is a characteristic of photoautothropic eukaryotes, which chordates certainly are not.
He sailed on the HMS Beagle to serve as a naturalist.
Sex linked inheritance usually occurs on the X chromosome. Males have one X, meaning if they receive the specific sex linked gene, they will have the trait. However for a female to possess the trait, she must receive 2 X chromosomes for that trait.
Dominant is more stronger then Ressesive
<em>ex</em><em>:</em><em> </em><em>if</em><em> </em><em>mom</em><em> </em><em>has</em><em> </em><em>brown</em><em> </em><em>hair</em><em> </em><em>and</em><em> </em><em>dad</em><em> </em><em>has</em><em> </em><em>blond</em><em> </em><em>the</em><em> </em><em>brown </em><em>hair</em><em> </em><em>will</em><em> </em><em>be</em><em> </em><em>more </em><em>dom</em><em>inant</em><em> </em><em>bec</em><em>ause</em><em> </em><em>it's </em><em>a</em><em> </em><em>stron</em><em>ger</em><em> </em><em>gene</em>
ACTH and TSH
Source: http://www.juniordentist.com/hormones-released-from-pituitary-gland-and-their-functions.html