Modern Genetics

The different forms of a gene are called
________________________.

• traits
• Kelly and Wilder
• allele
• Chromosomes

Tags

NGSS.HS-LS3-2

What is a segment of DNA called?

• Chromosome
• gene
• dominant trait
• nucleus

What is the genotype of a pea plant that's homozygous for height?

• tt
• Tt
• TT
• tall

What is the phenotype of a pea plant with a heterozygous genotype for height?

• Tt
• TT
• tall 
• short

What are the alleles of a pea plant with two recessive traits, such as a short white-flowered pea plant? (Tall and purple flowers and the dominant traits.)

• S and W
• s and w
• T and P
• t and p

If mice with white coats are dominant to those with brown coats, what is the genotype of a heterozygous mouse?

• WW
• Ww
• BB
• bb

If mice with white coats are dominant to those with brown coats, what is the phenotype of a heterozygous mouse?

• white
• brown
• Ww
• Bb

How many letters does a genotype contain?

• 1
• 2
• 3
• 4

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 a recessive 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