Life Science-Genetics

The allele for hemophilia is on the X chromosome and is a ________________.

• hybrid gene
• heterozygous gene
• sex-linked gene
• incomplete dominance gene

A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?

• 100% BB
• 75% BB and 25%Bb
• 50 % BB and 50% Bb
• 50% Bb and 50% bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

The man who studied genetics and came up with genetics is

• Watson
• Crick
• Mendel
• Darwin

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

Tags

NGSS.HS-LS3-1

Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?

• Purebred
• Hybrid

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

An offspring will receive how many alleles from each parent to determine a specific trait?

• one
• two
• three
• five

Tags

NGSS.HS-LS3-1

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

What is a phenotype

• The genetic make up (code)
• The physical trait

the passing of genetic traits from parent to offspring.

• heredity
• trait
• gene
• allele

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

having two of the same genes for the trait (sometimes called purebred).

• homozygous
• hetrozygous
• protein
• chromosome

Tags

NGSS.HS-LS3-1