plants + alleles Flashcards
heterozygous
an organism having a dominant and recessive allele of a GENE
what does the phloem do?
transports SUGAR up and down the plant, through TRANSLOCATION
what speeds up transpiration?
High Temperature, Less Humidity, Increased Light, Increased Air Movement
recessive allele
is MASKEDby a dominant allele
xylem
carries Water and Mineral ions UPWARDS only
cystic fibrosis allele
RECESSIVE
polydactyly allele
DOMINANT
what is transpiration
LOSS of water through the STOMATA from evaporation
homozygous
an organism that has TWO alleles for a particular GENE
what is a palisade
tissue of the leaf which has the highest number of CHLOROPLAST
phenotype
PHYSICAL appearance of the allele
allele
an ALTERNATIVE version of a gene
mutation
change in DNA - change in amino acids - different proteins
genotype
COMBINATION of allele to form a gene
guard cells
allow stomata to OPEN and CLOSE during the day and night
natural selection
FITTEST ones will pass the good alleles
