GREGOR MENDEL AND GENETICS

Front

What does heterozygous mean?

Back

An organism that has different genes for a trait (Tt)

Front

Homozygous is when...

Back

the alleles are the same

Front

What allele combination should go in the missing box?

Back

Aa

Front

B = brown fur & b = white fur. In the punnett square, what is the probability for white fur?

Back

50%

Front

Humans have _______ pairs of chromosomes, for a total of _______ chromosomes.

Back

23 pairs, 46 chromosomes

Front

What is the definition of genotype?

Back

The genetic makeup of an organism, represented by alleles.

Front

What is the definition of phenotype?

Back

The physical appearance or observable traits of an organism.

Front

What is a Punnett square used for?

Back

To predict the genetic outcomes of a cross between two organisms.

Front

What does dominant allele mean?

Back

An allele that expresses its trait even in the presence of a recessive allele.

Front

What does recessive allele mean?

Back

An allele that only expresses its trait when two copies are present.