Question

if two heterozygous individuals for a particular trait (aa x aa) have offspring, what is the genotypic ratio of the offspring?
a. 3:1
b. 2:1:1
c. 1:2:1
d. 1:1

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

which of the following best describes alleles?
a. identical genes that determine a trait
b. different versions of a gene that can code for variations of a trait
c. the physical appearance of a trait
d. the genetic makeup of an organism

Explanation:

For the first question, when two heterozygous (Aa) individuals cross - breed, using a Punnett square, the genotypes of the offspring are AA:Aa:aa = 1:2:1. For the second question, the principle that states the inheritance of one trait does not affect the inheritance of another is Independent Assortment. For the third question, alleles are different versions of a gene that can code for variations of a trait.

Answer:

1. c. 1:2:1
2. a. Independent Assortment
3. b. Different versions of a gene that can code for variations of a trait