Cleavage-stage cells are called ____, which form a solid ball or layer called a ____

a. morulas; blastomere
b. blastocoels; blastomere
c. blastomeres; morula
d. blastomeres; blastula
e. blastulas; blastocoel


ANSWER: c

Biology & Microbiology

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6) This is what chromosomes other than X and Y are called. _____ 7) A segment on a chromosome that directs the synthesis of a specific polypeptide or protein, which may play either a structural or functional role in the cell. _____ 8) The observable physical traits of an individual. _____ 9) People with dark hair usually also inherit dark eyes. Why is this usually the case? _____ 10) The expression of the trait in heterozygous individuals is somewhere between the expression of the trait in the homozygous recessive and homozygous dominant individual. _____

A) Codominance B) Duplication C) Incomplete dominance D) Heterozygous E) Pedigree F) Phenotype G) Gene H) Deletion I) Autosomes J) Linkage

Biology & Microbiology

Populations are held in check by

a. resource partition. b. predation. c. social parasitism. d. competition. e. all of these

Biology & Microbiology

DNA ________ accounts for the ability of chromosomes to undergo synapsis

Fill in the blank with correct word.

Biology & Microbiology

In some circumstances, when two different carbon sources are available, growth will occur first using one carbon source, then after a short lag period, growth will resume using the second carbon source. This process is called ________ growth.

A. alternating B. dimorphic C. bimorphic D. diauxic

Biology & Microbiology