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What Chromosomes Tell Us
A karyotype is the complete set of chromosomes of an individual. This is a picture of the human chromosomes and as expected there are 46 chromosomes. The number of chromosomes in human cells is 46 with 22 autosomal pairs, one of each from the mother and one of each from the father, and 2 sex chromosomes Females have 2 X chromosomes and males have an X and a Y chromosome. The only human cells that do not contain pairs of chromosomes are reproductive cells, or gametes, which carry just one copy of each chromosome. This image is called a karyogram. A karyogram allows a geneticist to determine a person's karyotype: a pictorial representation of their chromosomes.
Question 1
Which of these does not correctly explain why there are pairs of chromosomes in this karyotype?
Responses
A Each individual inherits one of each pair from each parent.Each individual inherits one of each pair from each parent.
B This karyotype represents human cells after fertilization.This karyotype represents human cells after fertilization.
C Gametes each contain a pair of chromosomes.Gametes each contain a pair of chromosomes.
D Humans reproduce via sexual reproduction.Humans reproduce via sexual reproduction.
Question 2
Imagine that this is your karyogram, showing your chromosomes. What information would your karyogram give scientists about you? All BUT ONE could apply.
Responses
A Your gender.Your gender.
B Your personality.Your personality.
C The color of your eyes.The color of your eyes.
D How tall you might be as an adult.How tall you might be as an adult.
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Answer 1

Question 1: Which of these does not correctly explain why there are pairs of chromosomes in this karyotype?
Response: C. Gametes each contain a pair of chromosomes.
Explanation: Gametes (sperm and egg cells) contain only one copy of each chromosome, not pairs. Therefore, this response is incorrect.

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Question 2: Imagine that this is your karyogram, showing your chromosomes. What information would your karyogram give scientists about you? All BUT ONE could apply.
Response: B. Your personality.
Explanation: A karyogram can provide information about physical traits influenced by genetics (like gender, eye color, and height), but it does not provide any information about personality, which is influenced by a variety of genetic and environmental factors.