Heredity Flashcards
1
Q
What is a chromosome?
A
A chromosome is a rod-like structure visible in the nucleus during cell division. It is made up of DNA and contains heredity information for making new organisms.
2
Q
What is a gene?
A
A gene is a small segment of DNA that controls a particular characteristic or protein in an organism.
3
Q
What is the difference between a dominant and recessive allele?
A
A dominant allele expresses itself in both homozygous and heterozygous conditions. A recessive allele only expresses itself in the homozygous condition.
4
Q
What is the difference between a phenotype and a genotype?
A
Phenotype refers to the expressed trait in an organism while genotype refers to the genetic makeup of an organism.
