Genetics and Inheritance

A HETEROZYGOUS individual would have the genotype:

• Hh

• hh

• HH

• Hi

In humans, blue eyes are a recessive trait. What genotype would a blue eyed child have?

• BB

• Bb

• bb

• None of the above, brown eyes are dominant.

The passing of genes from parents to children is called

• heredity

• allele

• genotype

• traits

A trait is

• Two different traits

• physical characteristic

• An allele

• Not sure

An allele is

• heteroybous

• one or two versions of a gene

• homoezygous

• Phenotype

How many alleles do we inherit?

• both from father

• we dont inherit alleles

• 1 from each parent

• both from mother

Homozygous is:

• different of the same alleles for a gene (Rr, Rr)

• two of the same alleles for a gene (RR, rr)

The Dominant Allele (RR) (Rr)

• Is always homozygous

• is the trait that always shows up

• is a karytype

• is the trait that never shows up

a phenotype is:

• Is the karytype of chromosomes

• the way we write the allele in symbols (RR, rr)

• the physical trait we see (eye colour, hair colour, bending thumb)

Genotype is:

• the alleles that manifest and we can see (attached earlobe)

• Genotype is always homozygous

• the alleles for a gene written in symbols (RR, Rr rr)