Genetics & Heredity

The substances that genes are made of is

• DNA

• cells

• alleles

The form of a gene that is hidden or masked if the dominant form of the gene is present ... usually represented by a lower case letter

• Recessive gene
• Dominant gene
• Phenotype

A heterozygous gene pair would look like this (hybrid combination)

• Gg
• gg
• GG

Different forms of the same gene

• recessive
• dominant
• alleles
• genes

Tags

NGSS.HS-LS3-2

A characteristic that an organism can pass on to its offspring

• heredity

• punnett square

• trait

• tattoo

Pick the homozygous alleles

• Tt
• Ff
• dd
• Ii

What is a Dominant Allele?

• An allele whose trait always shows up in the organism when the allele is present.
• An allele that is masked when a dominant allele is present.
• The scientific study of heredity.
• A characteristic that an organism can pass on to its offspring through its genes.

What does homozygous mean?

• Having two identical alleles
• Having two different alleles for a trait.
• A segment of DNA on a chromosome that codes for a specific trait.
• An organism's genetic makeup.

What does heterozygous mean?

• Having two identical alleles for a trait.
• Having two different alleles for a trailt
• An organizm that always produces offspring with the same form of a trait as the parent.
• A condition in which neither of two alleles of a gene is dominant or recessive.

What is an acquired trait?

• scar from a burn
• freckles
• blonde hair
• widow's peak