Question

1. read the sentence below. (2 points)

several students were having a discussion about the role of chromosomes in inheriting traits.
which statements made by the students provide the most accurate description?
select all that apply
a. chromosomes are the structures found in the nucleus of a cell. they are made from dna, containing hereditary information in the form of genes that control how an organism will look and behave.
b. genes contain thousands of chromosomes that carry specific information about building proteins for a particular trait.
c. chromosomes are small sections of dna that contain specific information about a trait to build proteins that people inherit. the thousands of different chromosomes passed from the parents allow for humans to look uniquely different.
d. chromosomes come in homologous pairs (one from each parent) that each contain thousands of genes, determining traits expressed in the offspring.
e. homologous chromosomes carry different gene sequences from each parent so the offspring may inherit more genes from one parent than they do from another parent.

1. which is an analogy of a genetic relationship?

a. dna is like a scriptwriter for the genes.
b. chromosomes are like the author of dna.
c. dna is like the actors for the chromosomes.
d. chromosomes are the directors of specific genes.

1. drag the structure from the column on the left to the column on the right organizing the size of the structures from smallest to largest.

use all choices
chromosomes
nucleotides
genes
smallest
1.
2.
3.
largest

Explanation:

Question 26

• Option A: Chromosomes are in the nucleus, made of DNA with hereditary info (genes) controlling traits. Correct.
• Option B: Genes are on chromosomes, not vice versa. Incorrect.
• Option C: Genes (not chromosomes) are small DNA sections with trait info. Incorrect.
• Option D: Chromosomes are homologous pairs (one from each parent), with genes determining traits. Correct.
• Option E: Homologous chromosomes have similar (not different) gene sequences for same traits. Incorrect.

• Option A: DNA contains genes (like a scriptwriter provides the script for a story, genes are the "script" for traits). This is a valid analogy.
• Option B: Chromosomes are made of DNA, so DNA is not authored by chromosomes. Incorrect.
• Option C: Actors perform, but DNA doesn’t "act" for chromosomes. Incorrect.
• Option D: Chromosomes don’t direct genes; genes are on chromosomes. Incorrect.

Step1: Recall the size hierarchy of genetic structures. Nucleotides are the building blocks of DNA (smallest). Genes are segments of DNA (larger than nucleotides). Chromosomes are made of DNA and proteins, containing many genes (largest).

Step2: Assign to smallest to largest. Smallest: Nucleotides (1), then Genes (2), then Chromosomes (Largest, 3).

Answer:

A. Chromosomes are the structures found in the nucleus of a cell. They are made from DNA, containing hereditary information in the form of genes that control how an organism will look and behave., D. Chromosomes come in homologous pairs (one from each parent) that each contain thousands of genes, determining traits expressed in the offspring.

Question 27