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
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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
Populations are held in check by
a. resource partition. b. predation. c. social parasitism. d. competition. e. all of these
DNA ________ accounts for the ability of chromosomes to undergo synapsis
Fill in the blank with correct word.
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