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