CB3 Genetics Flashcards
In blood groups what 2 alleles are codominant
Group A And B
I. I
When both alleles are present they have their own blood group AB
What are the 4 blood groups
A
B
AB
O
what blood group would be shown if someone had these alleles
1)A. B
I. I
2)O. O
I. I
3)A O
I. I
1)Group AB
2 Group O
3)Group A
If 2 parents one with alleles ,A. ,O. and one with group ,B. ,O what are the chances of having a child with phenotype group O
1in 4
25 percent
What is a genotype and phenotype
Genotype-genome that codes for a protein
Phenotype-protein that is made
What is a gamete and zygote
Gametes are sex cells like the egg cell and spleen cell a a zygote is when the 2 cells combine
What are 2 advantages of asexual reproduction
Not needing to find a mate
Rapid reproductive cycle
What is a disadvantage of asexual reproduction
No variation in population (new disease becomes present likely all species will be affected)
What is an advantage of sexual reproduction
Variation in population
What is a disadvantage of sexual reproduction
Needing to find a mate and taking lots of time and energy
In meiosis what is made at the end
4 haploid daughter cells and each with half the number of chromosomes(23)
Are the daughter cells of meiosis different or similar
They are haploid cells that are genetically different
What base pairs code for each other
A-T
C-G they are complementary to each other
Proteins are made of chains of what
Polypeptides are chains made of amino acids that fold up to make a protein
The bases in the dna determines the amino acid made and when they fold up a protein is made and does a specific thing
How many bases code for one amino acid
3 bases code for a single amino acid a triplet (codons)
Where does transcription take place
In the nucleus
In mRNA what codes for A(adenine) instead of T(thymine)
U(Uracil)
Dna is double stranded and too large to fit through the nucleus so mRNA is made to get through the nucleus
——- binds your a region of non-coding dna in front of a gene
RNA polymerase
