Genetics

Question 1

RNA contains all the genetic information of an organism true or false?

Answer 1

False

Question 2

How many bases are there in DNA?

Answer 2

4

Question 3

What type of pattern does the bases attach to in DNA and is made of sugar and phosphate?

Answer 3

Double helix

Question 4

What is the genetic make up of an organism called?

Answer 4

Genotype

Question 5

A biological unit of heredity is called what?

Answer 5

Gene

Question 6

What are the chromosomes called which are not the sex chromosomes?

Answer 6

Autosomes

Question 7

What are 23 pairs of chromosomes called?

Answer 7

Haploid

Question 8

What are the sex chromes for a male?

Answer 8

XY

Question 9

What is the process where information is exchanged during meiosis?

Answer 9

Crossover

Question 10

Genes can either be recessive or?

Answer 10

Dominant

Question 11

Which chromosomes determine sex?

Answer 11

X and Y

Question 12

Colour blindness is what type of inheritance?

Answer 12

Sex linked

Question 13

Which of the sex chromosomes contain sex linked inheritance?

Answer 13

X

Question 14

Which of the following is correct?

A.
The genotype is the actual DNA sequence, or gene, for a trait.

B.
The phenotype is the physical expression of a trait.

C.
An allele is one of several alternate forms of a gene for a given trait.

D.
Dominant alleles are fully expressed.

E.
All of these are correct.

Answer 14

E

Question 15

Which of the following is not controlled by complex inheritance?
A.
blood type

 	B.	
skin color
 	C.	
height
 	D.	
hair color
 	E.	
metabolic rate

Answer 15

Blood type

Question 16

Genotype is…

Answer 16

The genetic makeup of an organism

Question 17

Phenotype is defined as…

Answer 17

The traits expressed by the organism - how a person looks and functions

Question 18

The alternate form of a gene is…

Answer 18

Allele

Question 19

Homozygosity and heterozygosity of an individual can be determined by…

Answer 19

back cross

Question 20

Alleles are

Answer 20

Alternative forms of genes

Question 21

What is a section of DNA that codes for a protein called?

Answer 21

Gene

Question 22

How do somatic cells reproduce?

Answer 22

Mitosis

Question 23

How do sex cells reproduce?

Answer 23

Meiosis

Question 24

Which of the following statements is true about mitosis in humans?
A.
All cells of the body go through mitosis more or less constantly from conception until death.
B.
Each cell undergoing mitosis divides into two complete new cells that are usually identical to the cell from which they are originated.
C.
It takes roughly two weeks for a cell to go through all six phases of mitosis.
D.
Following cell division each cell has half the number of chromosomes.

Answer 24

B - each cell undergoing mitosis divides into 2 complete new cells that are usually identical to the cells from which they are originated

Question 25

Which of the following statements is true in humans? A. Mitosis produces cells that have a haploid number of chromosomes B. Meiosis produces cells that have a diploid number of chromosomes C. Meiosis produces cells that have a haploid number of chromosomes D. Females produce far more gametes that males

Answer 25

C- Meiosis produces cells that have a haploid number of chromosomes

Question 26

How many human gametes are normally present?

Answer 26

23

Question 27

``` Which of the following is NOT part of the DNA strand? A. Deoxyribose sugar B. Uracil C. Phosphate D. Thymine ```

Answer 27

Uracil

Question 28

``` Which of the following is correct? A. Somatic cells are diploid B. During meiosis prophase 1 the cell is haploid C. During meiosis prophase 2 the cell is haploid D. The result of mitosis is 2 diploid cells ```

Answer 28

During meiosis prophase 1 the cell is haploid