Question 1

The image above shows two cells undergoing a process. Which phase of the cell cycle is most likely depicted here?

Accepted Answer

M phase, specifically cytokinesis, where the cytoplasm divides to form two daughter cells

Question 2

During mitosis, chromosomes become highly condensed and visible under a light microscope. Approximately how much is the DNA condensed during this stage?

Accepted Answer

About 100,000 times its original length

Question 3

Which checkpoint in the eukaryotic cell cycle ensures that all chromosomes are properly attached to the spindle before the cell proceeds to cytokinesis?

Accepted Answer

M checkpoint

Question 4

If a cell fails the G1 checkpoint due to insufficient growth signals, what is the most likely outcome?

Accepted Answer

The cell will enter a resting state called G0

Question 5

Which of the following best describes the difference between haploid and diploid cells?

Accepted Answer

Haploid cells have one set of chromosomes, while diploid cells have two sets

Question 6

During meiosis, what is the result after Meiosis I?

Accepted Answer

Two haploid cells, each with duplicated chromosomes

Question 7

Which process is responsible for reducing the chromosome number by half in sexually reproducing organisms?

Accepted Answer

Meiosis

Question 8

Artificial selection in plants has led to the development of many vegetables from a single species. Which species is the source of cabbage, brussels sprouts, and broccoli?

Accepted Answer

Brassica oleracea

Question 9

A karyotype is used to analyze chromosomes. Which of the following is NOT a typical use of karyotyping?

Accepted Answer

Sequencing the entire genome

Question 10

Which equation correctly represents the total length of DNA in a human body, given that each cell contains approximately 2 meters of DNA and the body has about $$10^{13}$$ cells?

Accepted Answer

$$2 	imes 10$$^{13}$$ meters

Question 11

Which of the following best explains why chromosome number does NOT directly correlate with organismal complexity?

Accepted Answer

Chromosome number is determined by evolutionary pressures and speciation events, not complexity

Question 12

In forensic science, how has genetic genealogy contributed to solving cold cases such as the Golden State Killer?

Accepted Answer

By comparing DNA profiles from crime scenes to genealogy databases

Question 13

Which of the following is a consequence of inbreeding, as illustrated by the Habsburg family and Charles II of Spain?

Accepted Answer

Increased likelihood of inheriting recessive genetic disorders

Question 14

Which phase of the cell cycle includes DNA synthesis?

Accepted Answer

S phase

Question 15

Which of the following best describes the role of alleles in genetics?

Accepted Answer

Alleles are different forms of a gene found at the same locus on homologous chromosomes

Question 16

Which of the following is a real-world application of genetics in medicine?

Accepted Answer

Using gene-editing technologies to develop therapies for genetic diseases

Question 17

Which process is responsible for producing genetically identical cells for growth and repair?

Accepted Answer

Mitosis

Question 18

Which of the following is a direct result of artificial selection in agriculture?

Accepted Answer

Domesticated maize has large, soft kernels suitable for human consumption

Question 19

Which equation represents the reduction in chromosome number during meiosis from diploid ($$2n) to $$haploid ($$n$$)?

Accepted Answer

$$2n \rightarrow n$$

Question 20

Which of the following is a potential future application of genetics mentioned in the study materials?

Accepted Answer

De-extinction of species such as the woolly mammoth using sequenced genomes

Introduction to Genetics, Cell Division, and Applications in General Biology

Guida di studio - Domande di pratica

Study guide - Flashcard