Hereditary Information 1.2 Flashcards
Genetics
A field of Biology that studies heredity
Heredity
Is the passing of traits from parents to offspring
Gregor Mendel
In 1860 he experimented with pea plants to conclude that traits can be passed on from one generation to another.
Self pollination
When a male gamete combine with a female gamete in the same plant
Cross pollination
When a male gamete combine with a female gamete in different plants
True breeding plants
Homozygous chromosomes (PP, pp) Produces offspring with only one form of trait
What are the three discoveries that the mendal experiment find?
- Two factors that act as instructions for each trait
- Each parent donate one of the factors to offspring
- One factor may dominant over the other
Incomplete Dominance
When neither of the two factors can dominant over each other. (Purple + White = pink)
Sex linked trait
Traits that is determined by the sex chromosomes.
Genotype of a man with a condition
XhY
Genotype of a man without a condition
XHY
Genotype of a women with a condition
XhXh
Genotype of a women without a condition
XHXH
Genotype of a female carrier of a condition
XHXh
A male cannot be a carrier of a condition. True or False
True
Codominance
Both alleles are fully expressed
Genotype of codominance
HRHW (any letters but the two H has to be the same)
Is Sickle Cell Anemia an example of codominance or incomplete dominance
codominance
Why is Sickle cell anemia bad?
It makes the blood cells a moon shape instead of a circle. This will cause transportation difficult and will often cause blockages and tissue damage.
Genotype of Hemoglobin
HB^A
Genotype of Sickle cell anemia
HB^S
Genotype of Homozygous normal of Sickle cell anemia
HB^A HB^A
Genotype of heterozygous sickle cell
HB^A HB^S
What will happen if someone has HB^A HB^S
They will rarely or not experience any condition of sickle cell anemia
Genotype of sickle cell anemia
HB^S HB^S
Law of Segregation
Describes the genetic base for how genes are inherited. Alleles for each inherited trait sperate.
What is punnett squares?
A way to express inheritance of traits in monohybrid crosses