Vocabulary
What do we call the physical traits of an organism
phenotype
Yellow (Y) is dominant over green (y) in pea plants.
If the mom is green and the dad is heterozygous yellow. What are the parents genotypes?
Mom = yy
Dad = Yy
meiosis
Can 2 diploid cells be used in fertilization to make a new organism?
No
The gene combination an organism has for a trait
Genotype
Perform a punnett square to find out.
25%
Cell division for asexual reproduction like bacteria use to reproduce
Mitosis
Can a parent who has a genotype of BB have blonde haired children?
B-Brown hair b-blonde hair
No
The gene that is expressed (shows up physically) if it is present is called
Dominant
The ability to roll the tongue (R) is dominant over the inability to roll the tongue (r). If a homozygous dominant tongue roller marries a non roller. What are the possibilities of genotypes for their children?
Perform a punnett square to find out.
only Rr is possible
Forms identical daughter cells
Mitosis
Brown hair (B) is dominant over blonde hair (b).
Can two brown-haired parents have a blonde-haired child?
Yes, If they are Bb and Bb
The gene that is masked or covered up
recessive
TT and tt
Forms haploid cells
Meiosis
Yellow (Y) is dominant over green (y).
You have a yellow pea plant you are trying to figure out if its genotype is Yy or YY. Could you breed it with a green plant yy to see which genotype it is?
Yes
What two vocabulary words would you use to describe this genotype: bb
homozygous recessive
Yellow (Y) is dominant over green (y) in pea plants.
Two parents pea plants produce offspring that are 50% green and 50% yellow.
What do the genotypes of the parents have to be?
Yy and yy
both mitosis and meiosis
Brown hair (B) is dominant over blonde hair (b). A blonde haired male and a brown haired female have a blonde-haired child. Can the mothers genotype be Bb?
yes