Bio 93 Midterm 3 questions with verified answers
action potential Ans✓✓✓ a neural impulse; a brief electrical charge that
travels down an axon
allele Ans✓✓✓ alternative versions of a gene
alternative RNA splicing Ans✓✓✓ different mRNA molecules are
produced from the same primary transcript, depending on which RNA
segments are treated as exons and which as introns
aneuploidy Ans✓✓✓ a chromosomal aberration in which one or more
chromosomes are present in extra copies or are deficient in number
axons Ans✓✓✓ a part of a neuron that carries impulses away from the
cell body
barr body Ans✓✓✓ a dense object lying along the inside of the nuc;ear
envelope in cells of female mammals representing a highly condensed
inactivated x chromosome, reactivated for female gametes
bicoid Ans✓✓✓ a maternal effect gene that codes for a protein
responsible for specifying the anterior end
biotechnology Ans✓✓✓ A form of technology that uses living
organisms, usually genes, to modify products, to make or modify plants
and animals, or to develop other microorganisms for specific purposes.
, blastocyst Ans✓✓✓ hollow ball of cells
brain Ans✓✓✓ The mass of nerve tissue that is the main control center
of the nervous system
cell body Ans✓✓✓ Largest part of a typical neuron; contains the
nucleus and much of the cytoplasm
character Ans✓✓✓ A heritable feature that varies among individuals
chromosome translocation Ans✓✓✓ attachment of a chromosomal
fragment to a nonhomologous chromosome
cleavage Ans✓✓✓ rapid cell divisions without substantial growth to
generate a multicellular embryo
co-dominance Ans✓✓✓ phenotypes of both alleles are expressed
because they affect the phenotype in separate distinguishable ways
CRISPR Ans✓✓✓ a collection of DNA sequences that tells Cas9
exactly where to cut
cytoplasmic determinants Ans✓✓✓ maternal substances in egg that
influence development
action potential Ans✓✓✓ a neural impulse; a brief electrical charge that
travels down an axon
allele Ans✓✓✓ alternative versions of a gene
alternative RNA splicing Ans✓✓✓ different mRNA molecules are
produced from the same primary transcript, depending on which RNA
segments are treated as exons and which as introns
aneuploidy Ans✓✓✓ a chromosomal aberration in which one or more
chromosomes are present in extra copies or are deficient in number
axons Ans✓✓✓ a part of a neuron that carries impulses away from the
cell body
barr body Ans✓✓✓ a dense object lying along the inside of the nuc;ear
envelope in cells of female mammals representing a highly condensed
inactivated x chromosome, reactivated for female gametes
bicoid Ans✓✓✓ a maternal effect gene that codes for a protein
responsible for specifying the anterior end
biotechnology Ans✓✓✓ A form of technology that uses living
organisms, usually genes, to modify products, to make or modify plants
and animals, or to develop other microorganisms for specific purposes.
, blastocyst Ans✓✓✓ hollow ball of cells
brain Ans✓✓✓ The mass of nerve tissue that is the main control center
of the nervous system
cell body Ans✓✓✓ Largest part of a typical neuron; contains the
nucleus and much of the cytoplasm
character Ans✓✓✓ A heritable feature that varies among individuals
chromosome translocation Ans✓✓✓ attachment of a chromosomal
fragment to a nonhomologous chromosome
cleavage Ans✓✓✓ rapid cell divisions without substantial growth to
generate a multicellular embryo
co-dominance Ans✓✓✓ phenotypes of both alleles are expressed
because they affect the phenotype in separate distinguishable ways
CRISPR Ans✓✓✓ a collection of DNA sequences that tells Cas9
exactly where to cut
cytoplasmic determinants Ans✓✓✓ maternal substances in egg that
influence development
