Genes and Heredity

Allele

• A diagram that shows the occurrence of a genetic trait in several generations of a family.

• having two different alleles for a trait

• inherited characteristic that increases an organism's chance of survival

• Different forms of a gene

Tags

NGSS.HS-LS3-3

Chromosomes

• A person who has one recessive allele for a trait, but does not have the trait.
• fertilized egg, fused sex cells
• threadlike structures made of DNA molecules that contain the genes
• containing two complete sets of chromosomes, one from each parent.

Tags

NGSS.HS-LS3-1

Gene

• A segment of DNA on a chromosome that codes for a specific trait
• inherited characteristic that increases an organism's chance of survival
• A person who has one recessive allele for a trait, but does not have the trait.
• fertilized egg, fused sex cells

Tags

NGSS.HS-LS3-1

Genotype

• new cells produced by cell division
• A segment of DNA on a chromosome that codes for a specific trait
• Asexual reproduction in which a part of the parent organism pinches off and forms a new organism
• An organism's genetic makeup, or allele combinations.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Heterozygous

• having two different alleles for a trait
• An organism's physical appearance, or visible traits.
• An organism's genetic makeup, or allele combinations.
• Different forms of a gene

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-2

NGSS.HS-LS4-3

Homozygous

• Different forms of a gene
• Having two identical alleles for a particular gene
• Asexual reproduction in which a part of the parent organism pinches off and forms a new organism
• threadlike structures made of DNA molecules that contain the genes

Phenotype

• An organism's physical appearance, or visible traits.
• A diagram that shows the occurrence of a genetic trait in several generations of a family.
• having two different alleles for a trait
• fertilized egg, fused sex cells

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-2

NGSS.HS-LS4-4

Chromosomes are found in the ____________ of the cell

• Chloroplast
• Nucleus
• Cytoplasm
• Mitochondria

Tags

NGSS.HS-LS3-1

What is a dominant allele?

• A trait that is always shown (capital letter)
• A trait that can be hidden (lower case letter)
• Alleles that are the same
• Alleles that are different

What is Bb?

• Homozygous
• Heterozygous
• Recessive
• Alleles