Answer;
Primitive streak.
At the onset of the embryonic period, the primitive streak appears. It will eventually become the neural tube.
Explanation;
The primitive streak is a transient structure which forms on day 15 of human development.
It marks the start of gastrulation; the process in which the inner cell mass in converted into the trilaminar embryonic disc.
It originates from the anterior epiblast.
Answer:
predict the outcomes of genetic crosses.
Explanation:
Answer: Genotype
Explanation: The makeup of alleles determines the genotype, two alleles makes a genotype. The genotype is the genetic makeup of an organism.
The Inner layer of tissue is used for digestion.
