Genetics Review

What is the genetic makeup of an organism?

• genotype

• phenotype

• gene type

• comparative alleles

Tags

NGSS.HS-LS1-1

What are the different variations of a gene ?

• mutation

• genotype

• phenotype

• allele

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

What is the physical expression of a trait?

• genotype

• mutation

• genetic disorder

• phenotype

What does homozygous mean?

• when an offpsring has 2 of the same alleles for a trait

• when an offspring has 2 different allels for a trait

• when the offspring only has 1 allele for a trait

• when the offspring has 2 alleles for a trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What are the letters Ss and example of ?

• homozygous genes

• domianant genes

• heterozygous genes

• recessive genes

What do the letters nn represent?

• recessive genes

• dominant genes

• heterzygous genes

• homozygous genes

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

• 50% BB and 50% Bb

• 25% BB and 75%Bb

• 75% BB and 25% Bb

• 100% BB

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Long tails in monkeys (L) is dominant to short tails (l). What are the percentages of genotypes if you cross a homozygous dominant monkey with a homozygous recessive monkey.

• 50% LL 50% ll

• 50% LL and 50% Ll

• 75% LL and 25% Ll

• 100% Ll

Tags

NGSS.HS-LS3-1

How many alleles does an offspring inherit from each parent for every trait?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-1

When an offspring has the recessive form of a trait, what does that mean about the parents?

• Both parents must have 2 dominant alleles

• one of the parents has 2 dominant alleles and the other parent has 2 recessive alleles

• one parent has 2 recessive alleles and the other parent 1 dominant and 1 recessive allele

• recessive traits never show up

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2