Gastrulation produces
a. hollow balls of cells.
b. embryos with primary tissue layers.
c. solid balls of cells.
d. maternal messages.
e. all of these.
Answer: b
You might also like to view...
The scientific name for the black-footed ferret is Mustela nigripes. The name Mustela indicates the ____________ to which this organism belongs
a. class b. family c. genus d. phylum e. species
Temperate phages are those that can enter either the ________ or ________ cycle
A) lytic; lysogenic B) complementing; competing C) functional; nonfunctional D) lytic; phagocytic E) virulent; avirulent
Genetic drift occurs whenever a random event causes a genotype to reproduce more than others in a population.
a. true b. false
The preservation of beef jerky from microbial growth relies on which method of microbial control?
A) filtration B) lyophilization C) desiccation D) ionizing radiation E) supercritical CO2