DNA Flashcards
What is the name of the 4 chemical bases? and what can pair with what?
Guanine (G) and Cytosine (C)
Adenine (A) and Thymine (T)
with the base-pair code of CGTACCGA, how would you finish the sequence?
GCATGGCT…
In DNA, what does SNP stand for?
Single Nucleotide Polymorphisms
What is Heterozygous?
having 2 DIFFRENT alleles of a particular gene
What is Homozygous?
having 2 IDENITICAL alleles of a particular gene
You have 46 chromosomes, how many do you get from your mother?
Half or 23
Which genotype contains 2 of the same alleles?
Homozygous
What is the name of diagram that is used to show the genotypes and/or phenotypes of individuals in a family?
A Pedigree
_____ are lengths of the DNA carries the genetic information. Fill in the blank
Genes
How many “X” chromosomes do men have?
1 “X” and 1 “Y”
If you have 2 “X” chromosomes, you are born a ______. Fill in the blank.
Female
What is a Haploid cell?
A cell that contains a single set of chromosomes
What is a Diploid cell?
A cell that contain two copies of each chromosome
Who was the English chemist who used X-ray crystallography to produce photos of DNA?
Rosalind Franklin
What are the 3 parts in a DNA Nucleotide?
Phosphate, Deoxyribose sugar, Nitrogenous base
What is done in the Nitrogenous base?
Where the code is written, includes Adenine ad thymine, Gnomon and Cytosine
What is the definition of a Trait?
A variation of characteristics that make us who we are.
What is the definition of a Chromosome?
A structure of wound up DNA.
What is the definition of a Gene?
A part of the DNA that carries the information which determines a trait.
Do haploid cells have homologous chromosomes in them?
No, homologous only has one set of chromosomes.
How many strands are present in DNA?
2 strands
What shape does the double helix resemble?
A ‘twisted ladder’.
Which of the following substances is an example of an enzyme. Lipid. Lactose. Glucase. Lactase. Glucose. Keratin.
Glucose
What is the name of the Nitrogenous base pairing rule?
Complementary base pairing.
