The fossil record indicates that about 600 million years ago, a wide variety of ________ animals had evolved in the oceans

Fill in the blank(s) with correct word


invertebrate

Biology & Microbiology

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Which of the following do dinoflagellates most commonly associate with in a mutualistic relationship?

A) clams B) corals C) flatworms D) snails

Biology & Microbiology

Which idea(s) were established well before Darwin's time?

a. Offspring frequently resemble their parents.

b. Offspring inherit genes from their parents. c. Selective breeding improves domesticated plants and animals. d. Offspring frequently resemble their parents and selective breeding improves domesticated plants and animals. e. Offspring frequently resemble their parents, offspring inherit genes from their parents, and selective breeding improves domesticated plants and animals.

Biology & Microbiology

If a microbiologist wanted to check for motility of bacteria, he would choose a medium that was

A) liquid. B) semi-solid. C) solid. D) coagulated

Biology & Microbiology

The genes that code for two different traits:

A) are alternative alleles. B) are found at different loci. C) produce the same protein. D) are not found in the same cell. E) are found in all 46 chromosomes.

Biology & Microbiology