Genetic Dominance & Flower Color (w/video)

What is the definition of dominance in genetics?

• A phenomenon where one allele completely masks the effect of another.

• A phenomenon where both alleles contribute equally to the phenotype.

• A phenomenon where a new intermediate phenotype is formed.

• A phenomenon where alleles interact to produce a completely new trait.

In the context of dominance, what does a dominant allele do to the effect of another allele?

• It enhances the effect of the other allele.

• It completely masks the effect of the other allele.

• It blends with the effect of the other allele.

• It has no interaction with the other allele.

What is an 'intermediate phenotype' as described in the video?

• A phenotype where only the dominant gene is expressed.

• A phenotype where both dominant alleles are expressed distinctly.

• A blend of both genes, resulting in a phenotype between the two parental traits.

• A phenotype that is completely different from either parent.

What happens in exceptional cases where both different genes are dominant?

• One dominant allele completely suppresses the other.

• An intermediate phenotype is obtained.

• An individual with both phenotypes is obtained.

• The traits cancel each other out, resulting in no phenotype.

Technically, how is dominance defined?

• The physical appearance of an organism.

• The genetic makeup of an organism.

• The relation between two alleles of a gene and the associated phenotype.

• The process of gene mutation.

Dominance describes the interaction between which genetic components?

• Two different genes on different chromosomes.

• A dominant allele and a recessive or dominant allele of the same gene set.

• Only recessive alleles within a gene set.

• Only dominant alleles within a gene set.

If 'T' represents a dominant allele for height, what does dominance describe in relation to another allele (T or t)?

• The physical location of the alleles on a chromosome.

• The effect of the dominant allele 'T' on the other allele (T or t).

• The blending of the 'T' and 't' alleles.

• The independent assortment of 'T' and 't' alleles.

Based on gene interactions, how many types of dominance are discussed in the video?

• Two types: Complete and Incomplete Dominance.

• Three types: Complete, Incomplete, and Codominance.

• Four types: Complete, Incomplete, Codominance, and Partial Dominance.

• One type: Complete Dominance only.

Which type of dominance is described as being 'very common in nature'?

• Incomplete Dominance

• Codominance

• Complete Dominance

• Partial Dominance

In the hypothetical example, what do the alleles 'B' and 'W' represent?

• B for brown flowers, W for white flowers.

• B for blue flowers, W for white flowers.

• B for black flowers, W for yellow flowers.

• B for big flowers, W for small flowers.