UMN GCD 3022 Exam 1 Questions With Complete
Solutions
sickle cell anemia
overdominance example
disease resistance, subunit composition of proteins, differences
in protein function
3 explanations for overdominance (at the molecular/cellular
level)
codominance
both genes expressed
essential genes
genes required for survival
lethal allele
one that has the potential to cause the death of an organism,
usually the result of mutations, usually recessive, often prevent
cell division
conditional lethal alleles
kill only under certain environmental conditions
chromosomes
structures that contain genetic material
chromatin
, DNA-protein complex (in eukaryotes)
prokaryotes
bacteria, archaea
eukaryotes
protists, fungi, plants, animals
eukaryotes have
nucleus, 2+ chromosomes, membrane-bound organelles
diploid
two sets of chromosomes
homologous pair
nearly identical in size, same genes but potentially diff alleles
asexual reproduction
pre-existing cell produces two new cells
karyotype
set of images of the chromosomes, done on M phase (after
copying, before splitting)
two diploid daughter cells
mitosis produces
four haploid daughter cells
meiosis produces
heterogametic sex
Solutions
sickle cell anemia
overdominance example
disease resistance, subunit composition of proteins, differences
in protein function
3 explanations for overdominance (at the molecular/cellular
level)
codominance
both genes expressed
essential genes
genes required for survival
lethal allele
one that has the potential to cause the death of an organism,
usually the result of mutations, usually recessive, often prevent
cell division
conditional lethal alleles
kill only under certain environmental conditions
chromosomes
structures that contain genetic material
chromatin
, DNA-protein complex (in eukaryotes)
prokaryotes
bacteria, archaea
eukaryotes
protists, fungi, plants, animals
eukaryotes have
nucleus, 2+ chromosomes, membrane-bound organelles
diploid
two sets of chromosomes
homologous pair
nearly identical in size, same genes but potentially diff alleles
asexual reproduction
pre-existing cell produces two new cells
karyotype
set of images of the chromosomes, done on M phase (after
copying, before splitting)
two diploid daughter cells
mitosis produces
four haploid daughter cells
meiosis produces
heterogametic sex
