Traits and Reproduction Test Flashcards
What is a gene? What does it do?
Gene is a small part of dna that can code for proteins
What is a chromosome?
A large condensed piece of dna that contains many genes
What is heredity?
How traits are passed down from parent to offspring
What does DNA stand for?
Deoxyribonucleic acid
What is asexual reproduction?
To be able to form offsprings without a mate
What’s the main difference between offspring resulting from asexual reproduction vs sexual reproduction?
Asexual - no mate for offspring, genes are copied and pasted, sexual - opposite of asexual
What is a nucleotide? What are ALL of its parts?
Nucleotide is the building blocks of dna
Parts: 1. Deoxyribose/Sugar 2. Phosphate 3. Nitrogenous Base
What are the 4 bases?
A, T, G, C
What bases pair with each other?
A+T, C+G
What is DNA’s shape?
A double helix
What makes up DNA’s backbone or frame?
Sugar phosphate
How many chromosomes do humans have? How many pairs?
46 chromosomes, 23 pairs
What is a feature? And give an example.
A characteristic that 99.9% of the species have
ex: having hair
What is a trait? And give an example.
A specific characteristic of an individual
ex: having black hair
What is a variation? And give an example.
Any difference in traits between individual organisms
ex: many different hair colors
Why do siblings have different traits from each other?
inheritence patterns