Heredity
The passing of traits from parents to offspring.
Heredity
This molecule contains the genetic instructions of living organisms.
DNA
This type of cell division produces two identical daughter cells.
mitosis
A genetic disorder that affects the red blood cells and may cause the structure to look like a crescent moon. it causes anemia
Sickle cell
An organism whose DNA has been changed using genetic engineering.
Genetically Modified Organism (GMO)
A characteristic such as eye color, hair type, or blood type.
Trait
A section of DNA that contains instructions for a specific trait.
gene
Before a cell divides, this genetic material must be copied.
DNA
This genetic disorder causes difficulty in distinguishing certain colors, especially red and green.
colorblindness
The variety of genes, species, and ecosystems found on Earth.
Biodiversity
These thread-like structures contain DNA and genes and are found inside the nucleus
Chromosomes
Different forms of the same gene, such as the forms for tall and short plants.
alleles
This type of cell division produces reproductive cells with half the usual number of chromosomes.
meiosis
A person who has one recessive allele for a genetic disorder but usually does not show the disorder.
carrier
This is one possible benefit of genetically modified crops.
increase pest resistance
Humans normally have this number of chromosomes in each body cell.
46 or 23 pairs
An allele that is expressed even when only one copy is present.
domiant allele
This stage of mitosis occurs when chromosomes line up along the middle of the cell.
metaphase
This condition is usually caused by having an extra copy of chromosome 21
Down Syndrome
This farming practice can reduce biodiversity because large areas are planted with only one crop variety.
clue: M-n-c----re
monoculture
These are the two factors that influence many observable characteristics of an organism.
clue: g--- and e----------
Genes and environment
Two heterozygous tall pea plants, Tt × Tt, are crossed. This is the probability of producing a short offspring.
25% or 1/4
Meiosis creates genetic variation through these two important processes.
clue: c------- o---
or I-d-------t A--------t
crossing over or independent assortment
Two parents are carriers of a recessive disorder. This is the probability that their child will inherit the disorder.
25% or 1/4
This may happen when a genetically modified plant transfers its modified genes to wild plant populations.
clue: g-n- -l-w
gene flow