Cell Division
What are the two types of Cell Division?
Mitosis and Meiosis
What machine was used to discover the structure of DNA?
X-Ray
Freckles
Green/Brown/Blue eyes
Tall/Short
Curly/Wavy/Straight hair
In squash, yellow color (Y) is dominant to green (y). What will be the result of cross-pollination of a heterozygous female and heterozygous male?
What are the genotypes of their offspring and their probability?
YY - 25%
Yy - 50%
yy - 25%
How many chromosomes do mitosis cells have?
46
What is the purpose of Mitosis
- Growth and Repair
- To create more cells
Tightly wound DNA is called what?
Chromosomes
What are examples of Genotype
RR
Tt
hh
GG
What are the genotypes and probability for their offspring?
Ss - 50%
ss - 50%
How many chromosomes do meiosis cells have?
23
What is the purpose of Meiosis?
- Help with sexual reproduction
- Genetic Variation
Nucleus
Humans are genetically different from other humans and their parents. These genetic differences are a result of
Sexual Reproduction
In dogs, erect ears (E) are dominant over droopy ears (e). What are the results if tow heterozygous dogs had a litter of puppies?
What are the genotypes and probability of the offspring?
EE - 25%
Ee - 50%
ee - 25%
True or False: Parents pass down half of their genetic information to their offspring?
TRUE
How many times does Mitosis split?
Once
- 2 identical daughter cells
What is DNA made out of?
- Sugar
- Phosphates
- 4 nitrogenic bases
True or False: Examples of a diploid cell are
- Sperm
- Egg
FALSE
In humans, wavy hair (CS) results by the co-dominant situation of curly hair (C) and straight hair (S). What are the possible results if a curly-haired man and wavy haired woman have children?
What is the genotype and probability of their offspring?
CC - 50%
CS - 50%
If a starfish loses one of its limbs and grows it back (regeneration) what cellular process is responsible for the regeneration of their limbs?
Mitosis
How many times does Meiosis split?
Twice
- 4 unidentical daughter cells
Name the 4 nitrogenic DNA bases
Adenine
Guanine
Cytosine
Thymine
A diploid cell has how many chromosomes?
46
In crocus flowers, white (W) and purple (P) colors are co-dominant, and result in a purple and white striped flower when both genes are present. What are the possible results from the cross-pollination of a striped crocus with a white crocus?
WW - 50%
WP - 50%
23