Inheritance

What is the definition of an allele?

• An allele is a version of a gene.

• An allele is the genetic makeup of an organism

• An allele is another word for a gene.

A gene is...

• A a pair of pants

• An allele

• A length of DNA which occupies a specific position on the chromosome and codes for a specific trait

What is the definition of a genotype?

• The genetic makeup of an organism (sometimes shown with two letters).

• The physical traits of an organism.

• When one allele is dominant and one allele is recessive.

• When both alleles are dominant.

What is the definition of the phenotype?

• The physical traits of an organism based on the genotype

• The genetic makeup of an organism

• The letters eg, Aa

• The specific section of DNA

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

What is the definition of Homozygous?

• When one allele is dominant and one is recessive
• When an individual has two sets of the same allele.
• when it is neither dominant or recessive

Tags

NGSS.HS-LS3-2

What is the definition of heterozygous?

• When both alleles are dominant

• When one allele is dominant and one is recessive.

• When both alleles are recessive.

• When one gene is dominant and one is recessive.

Which answer includes the dominant homozygous genotype?

• AA

• Aa

• aa

Tags

NGSS.HS-LS3-1

Which answer contains the heterozygous genotype?

• AA

• aa

• Aa

Tags

NGSS.HS-LS3-2

In dogs, the allele for black fur (B) is dominant over the allele for white fur (b). A breeder breeds a heterozygous dog with a recessive homozygous dog. If the female dog has a litter of 12 puppies, predict how many will have black fur.

• 12

• 3

• 6

• 4