Question

before testing the pea plants, mendel formed a five-part hypothesis. what did mendel include in his hypothesis? check all that apply.

a pair of factors (known as genes) control traits.
one gene comes from each parent for every trait.
each trait is passed from generation to generation.
some traits are passed together from generation to generation.
when gametes are formed, genes separate.
if there are two unlike genes, one may be seen while the other is hidden.

Explanation:

Identify Mendel's five-part hypothesis

Mendel's classical model of inheritance consists of five key conceptual parts:

1. Alternative versions of factors (now called alleles/genes) account for variations in inherited characters.
2. For each character, an organism inherits two factors (a pair), one from each parent.
3. If the two factors at a locus differ, then one (the dominant factor) determines the organism's appearance, while the other (the recessive factor) has no noticeable effect on the appearance (it is hidden).
4. The two factors for a heritable character segregate (separate) during gamete formation and end up in different gametes (Law of Segregation).
5. These factors are passed unchanged from generation to generation.

Evaluate each option

• A pair of factors (known as genes) control traits: Correct. This is a core part of his hypothesis.
• One gene comes from each parent for every trait: Correct. Organisms inherit one factor from each parent.
• Each trait is passed from generation to generation: Correct. Traits are passed down as discrete, unchanged units.
• Some traits are passed together from generation to generation: Incorrect. Mendel's Law of Independent Assortment states that traits are inherited independently, not linked or passed together.
• When gametes are formed, genes separate: Correct. This describes the Law of Segregation.
• If there are two unlike genes, one may be seen while the other is hidden: Correct. This describes the Law of Dominance.

Answer:

• A pair of factors (known as genes) control traits. (Correct answer)
• One gene comes from each parent for every trait. (Correct answer)
• Each trait is passed from generation to generation. (Correct answer)
• Some traits are passed together from generation to generation.
• When gametes are formed, genes separate. (Correct answer)
• If there are two unlike genes, one may be seen while the other is hidden. (Correct answer)