Genetics Review

What do you call a section of DNA that codes for a specific trait?

• nucleus
• chromosome
• gene
• DNA

Tags

NGSS.HS-LS3-1

How many chromosomes are found in human egg and sperm cells?

• 20
• 23
• 26
• 46

Tags

NGSS.HS-LS3-1

The two different forms of a gene are called _________.

• zygotes
• traits
• phenotypes
• alleles

Tags

NGSS.HS-LS3-1

What word describes how traits are passed from parent to offspring?

• Alleles
• Dominance
• Probability
• Heredity

Tags

NGSS.HS-LS3-1

How many cycles of cell division occur in meiosis?

• 1
• 2
• 3
• 4

------is the combination of two alleles that are different from one another.

• homozygous
• heterzygous
• phenotype
• trait

Tags

NGSS.HS-LS3-2

---- Is the combination of two alleles that are the same

• genotype
• homozygous
• phenotype
• trait

The letters that make-up the genetic code for a trait

• genotype
• heterzygous
• phenotype
• trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The physical appearance of the allele combination the offspring receives

• genotype
• homozygous
• phenotype
• dominant

Tags

NGSS.HS-LS3-1

A type of gene that can be hidden is called

• genotype
• recessive
• dominant
• allele