Friday, April 27, 2012
Homework:
Word Wall due on block day
Inheritance Test on block day
- includes: meiosis, karyotypes, heredity and
genetics
Quiz-Style Logbook Check
Using your logbook. Complete the assignment.
When you are finished- keep on desk
We will trade and grade
Make an entryEntry 43: Genetics Practice- 4/27/12
See attached
Answers to Genetics Practice worksheet
Homozygous for each trait:
Dark eyes= DD
Short legs= ll
Wide stripes= WW
Simple tail= tt
Heterozygous
Long legs= Ll
Brown fur= Bb
Wide stripes= Ww
Complex Tail= Tt
Phenotypes
DdTt= dark eyes, complex tail
Llbb= Long legs, white fur
ddbb= white eyes, white fur
Parents: Bb x Bb
B
b
B
BB
Bb
b
Bb
bb
Genotypic Ratio: 1 RR: 2Rr: 1 rr
Phenotypic Ratio: 3 brown fur: 1 white fur
White brown
-
Vocab Answers
The combination of alleles: Genotype
A characteristic of an organism: Trait
Two alleles are the same: Homozygous
Two alleles are different: Heterozygous
Only one of this allele needed to see trait: Dominant
Part of a chromosome that determines a trait: Gene
Two of this allele needed to see trait: Recessive
A form of a gene: Allele
The observed trait of an organism: Phenotype
- What is the TRAIT for the animals?
noseshape
- What is the genotype of animal 1?
NN
- What is the recessive form of the
trait? Horizontal nose shape
- What is the phenotype for animal 3?
Horizontal nose
What is the TRAIT for flowers? Leaf position (even vs uneven)
What is the genotype of flower 1? EE
What is the recessive form of the trait? Uneven leaves
What is the phenotype for flower 3? Uneven leaves
DdbbWwTTll
Draw an animal with:
Dark eyes
White fur
Wide stripes
Complex tail
Short legs