Y10 Bio DNA, Pedigree and Punnett square

What is the purpose of a Pedigree chart?

• To track the inheritance of a trait

• To look retrospectively at family inheritance

• To compare evidence for evolution

• To work out if offspring will be male or female

Tags

NGSS.HS-LS3-1

Heterozygous

• hh

• HH

• hhh

• Hh

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Homozygous Dominant

• HH

• hh

• hH

• Hh

Tags

NGSS.HS-LS3-1

Homozygous recessive

• RR

• rr

• Rh

• Rr

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Genetic diversity

• • The species in a particular ecosystem.

• The total number of different genetic characteristics in a population.

• • The physical characteristics of organisms in a habitat.

• • The changes in population size over time.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Phenotype

• The genetic makeup of an organism.

• The physical expression of a trait.

• The process of cell division.

• The study of heredity.

Genotype

• The observable characteristics of an organism.

• The genetic constitution of an organism.

• The process of natural selection.

• The interaction between species.

Tags

NGSS.HS-LS3-2

Allele

• A variant form of a gene.

• A type of cell division.

• A group of ecosystems.

• A physical trait.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is a mutation?

• A change in the DNA sequence.

• A type of cell division.

• A physical trait.

• A group of ecosystems.

Tags

NGSS.HS-LS3-2

What is a dominant allele?

• An allele that is expressed only in the homozygous state.

• An allele that masks the effect of a recessive allele.

• An allele that is not expressed in the phenotype.

• An allele that is responsible for a mutation.