Genetic inheritance
Studied by 0 people
Learn
Practice Test
Spaced Repetition
Match
Flashcards1/13
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
|---|
No study sessions yet.
14 Terms
Allele definition
Different forms of the same gene e.g. hair colour
Dominant definition
When only one copy of the allele is needed to show in the offspring
Recessive definition
When the allele only shows when there are two copies
Homozygous definition
Two copies of the same allele
Heterozygous definition
Two different alleles
Genotype definition
The set of genes in our DNA
Phenotype definition
The outward appearance a set of genes displays
Inherited disorders definition
Disorders that are caused by inheriting faulty genes from parents
Polydactyly definition
A dominant inherited disorder which causes extra fingers or toes to form
Cystic fibrosis definition
A recessive inherited disorder which causes sticky mucus to block air ways
Number of chromosomes in a human
23 pairs (22 normal, 1 pair of sex)
What are the male chromosomes?
XY (50% chance)
What are the female chromosomes?
XX (50% chance)
What chromosomes can sperm hold?
Can hold Y or X chromosome so determine gender of embryo