Immediately after gastrulation:

the embryo forms a blastula

sperm travel to the oviduct

the body axis of the embryo appears

the fetus' circulatory system begins to mature

Producers are the most important biotic factor in an ecosystem true or false?

Th a prace for sleeping. 12. Which of the following is an example of a parasite? a. worm in your intestine c. bee stinger in your arm b. a lion hunting zebras d honeybee on a flower

a biology class is studying the effect of temperature on the amount of growth on duck weed in an aquarium. What type of data will they need to collect and wbu h tools will most likely be used

What happens when biodiversity increases

Which of these statements most likely describes what happens if DNA is not duplicated during interphase? A. The new cells would be more numerous. B. The new cells would have an incorrect number of chromosomes. C.

All cells contain this. The purpose is to direct cellular activities, including protein synthesis. A) DNA B) nucleus C) ribosomes D) plasma membrane

Why do you think species remain in a stage of stasis?

The allele for pattern baldness (B) is dominant, and the non-bald allele (b) is recessive. Susan's mother has the genotype bb, while her father has the genotype BB. Susan and her three brothers all have the same genotype (Bb).

Which function do the nucleus and ribosomes have in common? A They both move easily in and out of the nuclear pores. B They are organelles that control information in the cell. C Neither of them has a nuclear envelope.

When you notice that someone has unusually blue eyes, you've noticed their A. hybridization. B. genotype. C. phenotype. D. allele.