Question

1.8.2.a formative 1
which statement best describes a gene and its role in sexual reproduction?
a gene is the basic unit of heredity, made of dna, and each parent donates one copy from each parent
a gene is a type of cell that controls how an organism develops
a gene is created during reproduction and is not passed from parent to offspring
a gene is found only in organisms that reproduce asexually

Explanation:

• Analyze Option 1: A gene is the basic unit of heredity, made of DNA, and in sexual reproduction, offspring inherit one copy of each gene from each parent (maternal and paternal chromosomes), so this describes a gene and its role in sexual reproduction.
• Analyze Option 2: A gene is not a type of cell; cells contain genes. So this is incorrect.
• Analyze Option 3: Genes are passed from parents to offspring in sexual reproduction (through gametes), so saying a gene is not passed is wrong.
• Analyze Option 4: Genes are present in all living organisms, including those that reproduce asexually (e.g., bacteria have genes and reproduce asexually), so this is incorrect.

Answer:

A. A gene is the basic unit of heredity, made of DNA, and each parent donates one copy from each parent