B1 - Topic 3 - Genetics

Question 1

What is the basic unit of heredity?

Answer 1

Gene

Question 2

True or False: DNA is made up of nucleotides.

Answer 2

True

Question 3

Fill in the blank: The observable characteristics of an organism are called its _____.

Answer 3

Phenotype

Question 4

What are the two types of alleles?

Answer 4

Dominant and Recessive

Question 5

Multiple choice: Which of the following is a homozygous genotype? A) Aa B) AA C) Ab

Answer 5

B) AA

Question 6

What is the role of chromosomes in genetics?

Answer 6

They carry genes that determine traits.

Question 7

True or False: A phenotype can be influenced by environmental factors.

Answer 7

True

Question 8

Fill in the blank: The genetic makeup of an organism is known as its _____.

Answer 8

Genotype

Question 9

What is a Punnett square used for?

Answer 9

To predict the genotypes of offspring from parental crosses.

Question 10

Multiple choice: Which of the following represents a recessive trait? A) T B) t

Answer 10

B) t

Question 11

What is the difference between mitosis and meiosis?

Answer 11

Mitosis produces two identical cells, while meiosis produces four genetically diverse cells.

Question 12

True or False: Genetic variation is important for evolution.

Answer 12

True

Question 13

Fill in the blank: The process by which DNA is copied to make RNA is called _____.

Answer 13

Transcription

Question 14

What is the function of ribosomes in protein synthesis?

Answer 14

They translate mRNA into proteins.

Question 15

Multiple choice: What type of mutation involves a change in a single nucleotide? A) Frameshift B) Point mutation C) Deletion

Answer 15

B) Point mutation