A primitive groove is the equivalent of a:
a. neural crest.
b. branchial groove.
c. blastodisc.
d. blastopore.
e. neural groove
d
Biology & Microbiology
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Food traveling through the pharynx would next go to the ________
Fill in the blank(s) with correct word
Biology & Microbiology
The impact of a keystone species is proportionate to their abundance in an ecosystem
____________________ Indicate whether the statement is true or false.
Biology & Microbiology
During days 8 and 9 after fertilization in humans, ____.
A. amnion cleavage begins B. a blastocyst forms C. an embryonic disk is formed D. implantation occurs E. gastrulation occurs
Biology & Microbiology
Please refer to the following figure. Which type of point mutation has a greater possible number of potential changes?
a. missense b. transitions c. transversions d. frameshift e. silent
Biology & Microbiology