Question

1. chromosomes carry ____________.a. genesb. dnac. all of the above3. the variance in a gene, which occur on a fixed spot on a chromosome is called a/an _______.a. alleleb. cellc. centromere4. on a punnett square two capital letters indicate a gene which is______.a. homozygous dominantb. homozygous recessivec. heterozygous5. probability in genetics is expressed in ________.a. equationsb. fractionsc. percentages

Explanation:

• Question 2: Chromosomes are made of DNA and genes are segments of DNA. So chromosomes carry both DNA and genes.
• Question 3: An allele is a variant form of a gene at a specific locus (fixed spot) on a chromosome. A cell is the basic unit of life. A centromere is a region of a chromosome.
• Question 4: In a Punnett square, two capital letters (e.g., \(AA\)) represent a homozygous dominant genotype. Two lowercase letters (\(aa\)) are homozygous recessive. One capital and one lowercase (\(Aa\)) is heterozygous.
• Question 5: Probability in genetics can be expressed as fractions (e.g., \(\frac{1}{2}\)) or percentages (e.g., \(50\%\)). Equations are not the typical way to express genetic probability in this context.

Answer:

1. C. all of the above
2. A. allele
3. A. homozygous dominant
4. B. fractions, C. percentages