Genetics Flashcards
What can a trait be determined by?
Genes–dominant masks recessive and recessive masked by dominant
What causes diseases that are inherited?
Genetics– can be dominant or recessive
What is asexual and sexual reproduction?
Asexual– One parent–example clone, runner, budding (yeast), splitting(bacteria)
Sexual– 2 parents–ex. Does not have to be mommy and daddy, pollen and egg in flower, male and females parts of earthworm
What is the only time the offspring of asexual reproduction is not the same?
Mutation can change gene in asexual reproduction
What can reproduce sexually?
Most animals, most plants, most fungus, some single celled
Asexually?
Bacteria, some fungus, some single cell, some plants
Example of Homozygous dominant?
TT (same)
Homozygous recessive?
tt (same)
Heterozygous?
Tt (different)
What does(T) represent?
Dominant
What does (t) represent?
Ressevie
What is the 50/50 Rule?
Both parents contribute 50% genes
Who is the “Father of Genetics?”
Father Gregor Mendel–pea plants 3-4 generations, wide variety of characteristics
Humans have _____ copies of each chromosome.
46
Pairs of chromosomes
23
Sex cell
23 ( parents give 50/50)
Know Critter genetics. (Punnett Square)
Skye (blue tail color) & poppy (orange tail color)
Sky and poppy– P generation
Ocean and Lucy– F1
Ocean and lucy’s pups– F2
Know color blindness sex linked traits (Punnett Square)
XX and Xy
X–X chromosome
Y– male chromosome
X–carries traits
Males three times more likely to get sex-linked traits
Chances of you being male or female? Who made you male or female? (Punnett Square)
50/50
Dad made the kids male or female
Depends on if dad give X or Y chromosome
Who gives male sex-linked traits?
The Mom
