BIO 1500: unit 9
1. What did mendel demonstrate? (mention dependent/independent and what
type of patterns): Demonstrated that traits are transmitted from parents to offspring
- independently of other traits
- in dominant and recessive patterns
2. What did Mendel use as his model? What does the pea plant do?: - garden pea
purple plant that
- the species naturally self-fertilizes it is also a true breeding plant which means its homozygous (
self-fertilizes will give a purple plant)
3. MENDELIAN CROSSES:
• Performed -> mating two true-breeding individuals hav-
ing different traits for a characteristic
• Transferred pollen (produce male gametes/sperm) from the anther (male
organ) of a pea plant of one variety to the stigma (female organ) of female
,mature pea plant of the second variety/trait
• Plants crossed were called P0, generation one
• After each cross, Mendel collected the seeds containing embryo, of P0 , and
grew them the following season -> offspring are , first filial generation
• Examined characteristics of F1, then allowed them to -
naturally= crossing F1x F1.
• Then collected and grew seeds from F1 crossed: , or second filial
generation: hybridizations, parental, F1, self-fertilize, F2
4. •Mendel crossed true-breeding for violet flower color with true-breeding for
white flower color
• cross: cross of parents differing by one trait
,• Resulting hybrids in F1 generation all had flowers (100%
)
• In F2 generation, approximately
• quarters (75%) of the plants had flowers and one
quarter (1/4= 25%) had flowers.: Monohybrid, violet, three, violet, white
5. traits blend (TRUE OR FALSE): FALSE!!!- Mendel showed that the 2 versions did not blend. Traits are
distinct
, 6. Scientific community believed incorrectly, that inheritance involved blending
of parental traits producing an intermediate physical appearance in offspring
-> theory: parental traits lost or absorbed in offspring
Mendel worked with traits that were inherited in distinct classes (violet versus
white flowers);
• These kinds of traits allowed him to see experimentally that traits were not
in the offspring, nor absorbed, rather kept their
and could be passed on: blending, discontinuous variation, blended, distinctness
7. what is a genotype? What is a trait?: - combination of alleles that make a gene
example: Aa
- variation of a characteristic
example: blue, pink flowers
1. What did mendel demonstrate? (mention dependent/independent and what
type of patterns): Demonstrated that traits are transmitted from parents to offspring
- independently of other traits
- in dominant and recessive patterns
2. What did Mendel use as his model? What does the pea plant do?: - garden pea
purple plant that
- the species naturally self-fertilizes it is also a true breeding plant which means its homozygous (
self-fertilizes will give a purple plant)
3. MENDELIAN CROSSES:
• Performed -> mating two true-breeding individuals hav-
ing different traits for a characteristic
• Transferred pollen (produce male gametes/sperm) from the anther (male
organ) of a pea plant of one variety to the stigma (female organ) of female
,mature pea plant of the second variety/trait
• Plants crossed were called P0, generation one
• After each cross, Mendel collected the seeds containing embryo, of P0 , and
grew them the following season -> offspring are , first filial generation
• Examined characteristics of F1, then allowed them to -
naturally= crossing F1x F1.
• Then collected and grew seeds from F1 crossed: , or second filial
generation: hybridizations, parental, F1, self-fertilize, F2
4. •Mendel crossed true-breeding for violet flower color with true-breeding for
white flower color
• cross: cross of parents differing by one trait
,• Resulting hybrids in F1 generation all had flowers (100%
)
• In F2 generation, approximately
• quarters (75%) of the plants had flowers and one
quarter (1/4= 25%) had flowers.: Monohybrid, violet, three, violet, white
5. traits blend (TRUE OR FALSE): FALSE!!!- Mendel showed that the 2 versions did not blend. Traits are
distinct
, 6. Scientific community believed incorrectly, that inheritance involved blending
of parental traits producing an intermediate physical appearance in offspring
-> theory: parental traits lost or absorbed in offspring
Mendel worked with traits that were inherited in distinct classes (violet versus
white flowers);
• These kinds of traits allowed him to see experimentally that traits were not
in the offspring, nor absorbed, rather kept their
and could be passed on: blending, discontinuous variation, blended, distinctness
7. what is a genotype? What is a trait?: - combination of alleles that make a gene
example: Aa
- variation of a characteristic
example: blue, pink flowers
