genetics, punnett squares, heredity

Homozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

An organism’s genetic makeup

• genotype

• phenotype

• homozygous

• heterozygous

Look at the punnett square. What is the probability of the offspring showing the recessive trait?

• 100%

• 75%

• 50%

• 25%

• 0%

Which of the following allele pairs is homozygous?

• Ee

• BB

• Tt

What is heredity?

• traits passing from offspring to parents
• plants that are cross-pollinated
• traits passing from parents to offspring
• the ratio of dominant to recessive traits

In a certain species of plant, the color purple (P) is dominant to the color white (p).
According to the Punnett Square, what is the probability of an offspring being purple?

• 25%
• 0%
• 100%
• 50%

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

When writing allele pairs, the dominant allele is written as a 

• capital letter
• lower case letter
• a number

What are the probabilities of the phenotype(s) of the offspring? (A-Brown hair; a-blond hair)

• 50 % Brown Hair and 50% Blond Hair

• 25 % Brown Hair and 75% Blond Hair

• 75 % Brown Hair and 25% Blond Hair

• 0% Brown Hair and 100% Blond Hair

Look at the punnett square. What is the probability that the offspring's alleles will be homozygous dominant?

• 100%

• 75%

• 50%

• 25%

• 0%