Genetics Flashcards
Who is the father of genetics?
Gregor Mendel
What is TT
Homozygous Dominant
What is Tt
Heterozygous
What is tt
Homozygous Recessive
What does heterozygous mean?
Different
What does homozygous mean?
Same
What is a punnet square?
Diagram used to predict the offspring by crossing the parent’s genetics.
Cross homozygous dominant and heterozygous
BB- 50% 2
Bb- 50% 2
bb- 0% 0
Cross heterozygous and heterozygous
BB- 25% 1
Bb- 50% 2
bb- 25% 1
Passing of genetic traits from parent to offspring
Hereditary
Science of heredity and the mechanisms of which are passed from parent to offspring
Genetics
Phenotype
The physical appearance of an organism
Genotype
Genetic makeup, the combination of alleles
What are sex chromosomes?
X and Y
Female is:
XX
Male is:
XY
Which parent determines the sex of the offspring
Father, because he has both alleles, it depends which one he passes on
How does a person get down syndrome?
The person would have three chromosomes in the 21 chromosome pair
If both parents have cystic fibrosis, what are the chances of the child having it?
25%
What is a karyotype?
Organized profile of someones chromosomes
What is the normal number of chromosomes in a person?
46
How many chromosomes does a person have with trisomy?
47
Where is hereditary information stored?
Chromosomes
Describe Meiosis
Reduces chromosome number by half, produces haploid gametes
List the stages of meiosis
(Interphase) Meiosis 1 and Meiosis 2
