Inheritance and Alleles

A segment of DNA that codes for a trait

• gene

• centromere

• chromosome

• chromatid

Tags

NGSS.HS-LS1-1

NGSS.HS-LS3-1

Genetic traits are determined by one or more

• genes

• organelles

• random chances

• cells

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A version or variation of a gene

• trait

• gene

• allele

• DNA

Long strands of DNA are wrapped into

• DNA

• Chromosome

• Alleles

• Phenotype

Chromosomes are made of

• DNA
• RNT
• WWE
• DMA

Humans have _______ pairs of chromosomes, for a total of _______ chromosomes.

• 10, 20

• 25, 100

• 23, 46

• 46, 92

These types of alleles are only expressed if the organism has two copies

• dominant

• recessive

• homozygous

• heterozygous

This type of allele is expressed whether there are one or two copies present.

• dominant

• recessive

• homozygous

• heterozygous

In pea plants, purple flowers (P) are dominant to white flowers (p). The characteristic of a PP plant would be

• purple

• white

• homozygous

• heterozygous

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In pea plants, purple flowers (P) are dominant to white flowers (p). The characteristic of a pp plant would be

• purple

• white

• homozygous

• heterozygous