Question

question 9
which of the following statements is false?

1. the genetic makeup (genes it possesses) of an organism is its genotype.
2. an organism with two different alleles for a single trait is said to be heterozygous for that trait.
3. alleles are alternate forms of a gene.
4. the expressed physical traits (what it looks like) of an organism are called its karyotype.

Explanation:

• Statement 1: Genotype is indeed the genetic makeup of an organism.
• Statement 2: Heterozygous means having two different alleles for a trait.
• Statement 3: Alleles are alternate forms of a gene.
• Statement 4: The expressed physical traits of an organism are called the phenotype. A karyotype is the number and appearance of chromosomes in the nucleus of a eukaryotic cell.

Answer:

1. The expressed physical traits (what it looks like) of an organism are called its karyotype.