Chapter 3 Test Review Flashcards
What are sperm and eggs known as?
Sex cells
What is a phenotype?
The expression of a trait
What is the phenotype determined by?
The combination of alleles which is called the genotype.
What is a genotype?
The combination of alleles
What does meiosis do?
Produces cells with half the number of chromosomes
What is an allele?
Different versions of the same genes
Genes carry info that determines what?
Traits
What process produces sex cells?
Meisosis
What is heredity?
The passing of traits from parents to offspring
Four cells are produced form a single cell is what process?
Meiosis
What is incomplete dominance?
When one trait is not completely dominant over another
What is a recessive trait?
A recessive trait is not expressed or hidden if a dominant trait is present in the genotype. You need two recessive traits in a genotype to actually see the recessive trait.
How are sex cells different from body cells?
Sex cells have half the number of chromosomes
Put the following in largest: cell, gene, chromosome
Gene Chromosome Cell
What is a sex-linked disorder and what is an example?
A recessive trait that is only carried on the X chromosome.
Color blindness
