Punnet Square
A right handed heterozygous man marries a left handed women. What are the possible genotypes of their children?
R r
Rr rr r
Rr rr r
Rr and rr
Stages of Mitosis?
P-prophase
M-metaphase
A-anaphase
T-telophase
What happens in the differentiation phase of oogenesis?
Ootid splits to become ovum and second polar body
Law of Dominance
The dominant allele will express itself will the resistive one will remain hidden.
Which chromosome carries colour blindness?
X chromosome
A man has brown eyes and curly haired. His father was heterozygous for curly hair and homozygous for brown eyes and his mother is straight haired and blue eyed. If he marry's a blue eye woman with straight hair, what is the phenotypic ratio of their children?
bbhh x BbHh
BbHh, Bbhh, bbHh, bbhh
1:1:1:1
Which process creates haploid cells?
Meiosis
Where does meiosis take place in females?
ovaries
Law of Independent Assortment
Alleles of one gene are passed down independently from other alleles from other genes.
When should you half shade a pedigree?
When someone is a carrier for an autosomal disease
A red flower and a yellow flower produce an offspring that follows the law of incomplete dominance. What is the phenotype of the offspring?
orange
What process do somatic cells go through to reproduce?
Mitosis
What is non disjunction? When is it most likely to occur?
- when sister chromatids or homologous pairs refuse to split
- anaphase
Law of Segregation
The two alleles for a trait separate during formation of a gamete so each one has 1 allele for each trait.
What does Adenine bond with? Bonus: is it triple or double bond?
Bonds with Thymine (double bond)
A roan cow and a white cow mate. What are the phenotypes of their offspring?
R W
RW WW W
RW WW W
(imagine the letters are superscripts for C)
P: roan and white
What happens in G1 phase?
- rapid growth
- metabolic roles
Which chromosome error happened here?
M N P O R
R O P N M
Inversion
Which of Mendal's Laws happen during Anaphase II?
Segregation
- sister chromatids split and each gamete has 1 allele
What is a nucleotide and what are the 3 parts of it?
- Lego block of DNA
- Unit of DNA
- Deoxyribose, phosphate and nitrogenous base pair
Is it possible for two people with the blood types AB and O to produce a baby with the blood type AB? Why or why not?
The parent with O blood would give little I alleles leading to all of the children having A or B blood.
What is the name of the enzyme that attaches free nucleotides to complimentary base pairs?
DNA polymerase
Which chromosome error happened here?
S S R T E E F
S S S S R T E E F
Duplication
Which of Mendel's Laws happen during Metaphase I?
Law of Independent Assortment
- the way that the chromosomes line up on metaphase plate is random and independent from the other alleles
What is the loose phosphate end called?
5 prime