Question

which principle states that the inheritance of one trait does not affect the inheritance of another trait?
a. phenotype ratio
b. dominance principle
c. independent assortment
d. allele segregation

which of the following statements about dominant alleles is true?
a. they overpower recessive alleles when present
b. they are always expressed in the phenotype
c. they can be masked by recessive alleles
d. they are only present in homozygous genotypes

what is the term for the physical expression or appearance of a particular trait?
a. dominance
b. genotype
c. allele
d. phenotype

in a genetic cross, what does a recessive allele require to be expressed?
a. two recessive alleles
b. at least one dominant allele
c. a heterozygous genotype
d. a homozygous dominant genotype

Explanation:

1. The principle that the inheritance of one trait does not affect the inheritance of another is independent assortment. It is a fundamental principle in genetics.
2. Dominant alleles overpower recessive alleles when present. They are expressed in the phenotype when at least one copy is present.
3. The physical expression or appearance of a particular trait is called the phenotype.
4. A recessive allele requires two recessive alleles (homozygous recessive genotype) to be expressed in a genetic cross.

Answer:

1. c. Independent Assortment
2. a. They overpower recessive alleles when present
3. d. Phenotype
4. a. Two recessive alleles