Asexual or Sexual Reproduction Q: Limits the spread of harmful
traits A: Asexual reproduction because each offspring is
genetically identical to the parent
Slide 3
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Cross a heterozygous purple plant (Pp) vs a homozygous dominant
purple plant (PP). What are the genotypes and phenotypes of the
offspring? PP Pp PP Pp P p P P Genotypes: PP, Pp Phenotypes: All
Purple
Slide 4
Asexual or Sexual Reproduction Q: Requires only one parent A:
Asexual reproduction
Slide 5
Asexual or Sexual Reproduction Q: Works best in stable
environments that experience little change A: Asexual
reproduction
Slide 6
Asexual or Sexual Reproduction Q: Offspring can sometimes show
a genetic trait (including disease) that the parents did not have
A: Sexual reproduction
Slide 7
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Cross a heterozygous tall plant (Tt) vs a heterozygous tall plant
(Tt). What are the genotypes and phenotypes of the offspring? TT Tt
tt T t T t Genotypes: TT, Tt, tt Phenotypes: First two are tall,
last one is short
Slide 8
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Tallness in plants: what is the genotype for a homozygous dominant
TT
Slide 9
Mitosis or Meiosis Creates an exact copy of the original cell
Mitosis
Slide 10
Asexual or Sexual Reproduction Q: Each offspring is genetically
identical to the parent so if the organism is well adapted to the
environment the offspring will be exactly the same A: Asexual
reproduction
Slide 11
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Flower color what is the phenotype for Pp Purple flowers
Slide 12
Asexual or Sexual Reproduction Q: Usually allows for quicker
adaptation to changes in the environment A: Sexual
reproduction
Slide 13
Mitosis or Meiosis Starts with one cell with a full set of
chromosomes, result is four cells each with a half set of
chromosomes Meiosis
Slide 14
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds For
seed shape-what is the genotype for homozygous dominant plant
RR
Slide 15
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Tallness in plants: what is the genotype for a heterozygous plant
Tt
Slide 16
Mitosis or Meiosis Starts with one cell with a full set of
chromosomes, result is two cells each with a full set of
chromosomes Mitosis
Slide 17
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Cross a heterozygous purple flower plant vs. a white flowered
plant. What are the genotypes and phenotypes of the offspring? Pp
pp Pp pp P p p p Genotypes: Pp, pp Phenotypes: Purple, White
Slide 18
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Flower color- genotype for a heterozygous plant Pp
Slide 19
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Plant height- genotype for a short plant tt
Slide 20
Asexual or Sexual Reproduction Q: Produces genetic variation A:
Sexual reproduction
Slide 21
Mitosis or Meiosis Splits the number of chromosomes in a cell
in half Meiosis
Slide 22
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Flower color what is the phenotype for pp white flowers
Slide 23
Asexual or Sexual Reproduction Q: Usually produces large
numbers of offspring quickly A: Asexual reproduction
Slide 24
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Cross a heterozygous plant vs a homozygous dominant tall plant.
What are the genotypes and phenotypes of the offspring? TT Tt T T T
t Genotypes: TT, Tt Phenotypes: all tall
Slide 25
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds For
seed shape-what two genotypes would result in round seeds RR,
Rr
Slide 26
Some Pea Plant Alleles: Pea plants T-tall plants t-short plants
P-purple flowers p-white flowers R-round seeds r-wrinkled seeds
Cross a heterozygous round plant vs a heterozygous round plant.
What are the genotypes and phenotypes of the offspring? RR Rr rr R
r R r Genotypes: RR, Rr, rr Phenotypes: First two are Round, last
one is wrinkled