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Science learning

HEREDITY is the process through which traits are passed from parents to offspring
List 3 examples of traits passed by heredity Face shape Hair color Blood type
An ACQUIRED TRAIT in a organism develops after its born
Give an example of the following traits~ Environmental~ Learned~ Manipulated~ Environmental~ A flamingo is pink because it eats pink foods Learned~ The ability to ride a skateboard or bike Manipulated~ Breeding plants or animals to get the most desirable traits
________________determines the inherited traits of an organism. DNA
CHROMOSOMES are ___________________. short, thick coils of DNA
How many chromosomes are in the human cells? 46
How many chromosomes are in the human gametes? 23
Why do body cells have trice as many chromosomes as gamete? Gametes (egg's sperm) have 23 because when the egg and the sperm combine and creates a new individual (baby) with a complete set of 46 chromosomes.
The different forms of a gene are called Alleles
A _______________allele always shows up in a organism. Dominant
A ________________ allele is hidden whenever the dominate allele is present. recessive
A ________________has two different alleles for a trait hybird
A _________________is a characteristic, such as seed color. trait
The ___________________passing traits from parents to offspring is called heredity
The study of heredity is called genetics
A ______________always produces offspring that have the same trait. purebred
Phenotype is the way an organism looks.
Genotype is the genetic makeup, or combination of alleles in an organism.
homozygous has two of the same alleles for a trait
heterozygous An organism with two different alleles for a trait
heterozygous Bb
homozygous BB
Dominant BB
recessive bb
Factors that control traits genes
Created by: 17jhodges