Punnett Square

If black fur is dominant (B) and white fur is recessive (b), what is the genotype of an organism with black fur?

• BB (homozygous dominant)

• bb (homozygous recessive)

• Bb (heterozygous)

• Bb (homozygous dominant)

How can you determine the phenotype of an organism from a Punnett Square?

• By analyzing the environmental factors affecting the organism.

• By looking at the genotypes in the boxes, you can determine the corresponding phenotypes based on dominant and recessive traits.

• By counting the number of offspring produced by the organism.

• By observing the physical characteristics of the organism without any genetic analysis.

What is the genotype of an organism with white fur if white fur is recessive?

• FF (homozygous dominant)

• Ff (heterozygous)

• ff (homozygous recessive)

• Ff (homozygous dominant)

In a Punnett Square, what does each box represent?

• Each box represents a possible genotype of the offspring resulting from the combination of the parents' alleles.

• Each box represents the physical appearance of the offspring.

• Each box represents the number of offspring produced.

• Each box represents the dominant allele of the parents.

What is the difference between dominant and recessive traits?

• Dominant traits are expressed when at least one dominant allele is present, while recessive traits are only expressed when two recessive alleles are present.

• Dominant traits are always expressed, while recessive traits are never expressed.

• Dominant traits require two dominant alleles to be expressed, while recessive traits require only one.

• Dominant traits are expressed in males only, while recessive traits are expressed in females only.

What is the expected phenotypic ratio from a monohybrid cross of two heterozygous parents (Bb x Bb)?

• 1:1 (1 black fur: 1 white fur)

• 2:1 (2 black fur: 1 white fur)

• 3:1 (3 black fur: 1 white fur)

• 4:0 (4 black fur: 0 white fur)

What does heterozygous mean?

• Having two identical alleles for a particular gene, such as AA

• Having two different alleles for a particular gene, such as Aa

• Having no alleles for a particular gene

• Having multiple alleles for a particular gene

What does homozygous mean?

• Having two different alleles for a particular gene, such as Aa

• Having two identical alleles for a particular gene, such as AA or aa

• Having one allele for a gene

• Having three alleles for a particular gene

What does it mean if an organism is homozygous recessive?

• It means the organism has two dominant alleles for a trait, such as AA.

• It means the organism has one dominant and one recessive allele for a trait, such as Aa.

• It means the organism has two recessive alleles for a trait, such as aa.

• It means the organism has no alleles for that trait.

What is an allele?

• An allele is a variant form of a gene that can produce different traits.

• An allele is a type of chromosome that determines the sex of an organism.

• An allele is a protein that helps in the synthesis of DNA.

• An allele is a structure that carries oxygen in the blood.