Download Genetics and Meiosis Review

Genetics and Meiosis Review
Comparing Mitosis and Meiosis
Type of Cell Division
Purpose of Cells
End Products
#of Cellular Divisions
# of cells produced
Diploid or Haploid
Crossing over occur?
Where produced in body?
Starting Chromosome # - 2n= 38
MITOSIS
MEIOSIS
Draw a picture showing the distinction between metaphase in Mitosis; Metaphase 1 in Meiosis I and
Metaphase II of Meiosis II. The original parent cell starts with a diploid number (2N) – 6
Metaphase
Metaphase I
Metaphase II
How does this affect the chromosome #of the products? How does this increase genetic variability in the final
products of meiosis? What other event increases genetic variability?
A Black Unicorn (BB) mates with a White Unicorn (WW). If unicorn fur color is controlled by a co-dominant
allele relationship, what color would the resulting baby unicorns be?
What if the unicorn fur color is controlled by incomplete dominance allele relationship, what color would the
resulting baby unicorns be?
What if the unicorn fur color is controlled by dominant/recessive allele relationship, what color would the
resulting baby unicorns be if the black allele is dominant to white allele?
Single Trait Cross
Complete the following punnett square for a cross between a
heterozygous purple flower and a white flower.
1. What are the genotypes of the parents?
2.
What are the genotypes of the offspring?
3. What are the phenotypes of the offspring?
Di hybrid Cross
A) DNA Fingerprinting
1.
Write the genotype and phenotype for squares A, B, C
2.
Which alleles are dominant?
3.
What is the phenotypic ratio?
B) Karyotype
C) Pedigree Cart
A) Which suspects DNA matches the DNA found at the crime scene?
B) What is the gender of the individual profiled in the karyotype? What species?
C) How many generations represented by the pedigree? How many individuals expressing the trait? Is
the trait expressed Dominant or Recessive? What do the shapes represent?
Differentiate between the following vocabulary pairs: (gene and allele), (heterozygous and homozygous),
(genotype and phenotype); (dominant and recessive); (multiple alleles and polygenic trait), (gamete and
somatic cell), (linked genes and sex linked genes); (karyotype, dna fingerprint, and pedigree).