Heredity and Evolution Test

Result

Heredity and Evolution Test - 31

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

$$F_2$$ generation is produced as a result of

A
Crossing $$F_1$$ individuals with dominant individuals

B
Crossing $$F_1$$ individuals with recessive individuals

C
Crossing $$F_1$$ individuals amongst themselves

D
All the above

Solution

Progeny or individuals formed by the crossing homozygous dominant and recessive parents is called $$F_1$$ progeny and the generation is called $$F_1$$ generation. The generation formed by crossing of $$F_1$$ progeny among themselves is called $$F_2$$ generation.
So, the correct option is 'Crossing $$F_1$$ individuals amongst themselves'.
Question 2
1 / -0

Human evolution originated in

A
Africa

B
Jawa

C
France

D
China
Solution
The earliest humans were found in Africa, which is where much of early human evolution occurred.
The fossils of these early hominids, which lived 2 to 6 million years ago, all come from this continent.
Most scientists believe that early humans migrated from Africa to Asia between 2 million and 1.7 million years ago, entering Europe some time within the past 1 million years.
So, the correct option is 'Africa'.
Question 3
1 / -0

A cross involving parents differing only in one trait is:

A
Haploid

B
Diploid

C
Monohybrid cross

D
Dihybrid cross

Solution

A. Haploid – Organisms with one set of chromosomes.

B. Diploid – Organisms with two sets of chromosomes

C. Monohybrid – A cross is made between two parents differ on the basis of one trait is called Monohybrid.

D. Dihybrid – A cross is made between two parents differ on the basis of two traits is called Dihybrid.
So, the correct answer is option C.
Question 4
1 / -0

Which of the following traits in humans you can easily study just by observing and making family charts?

A
Dimples

B
Tongue rolling

C
Ear lobes attachment

D
All of the above

Solution

The characteristics of the human that can be studied just by observation and family chart are characters of physical appearance or muscle habits controlled by genetics. So, characters such as dimples, tongue muscle rolling, and earlobe attachment are expressions of genes which can be observed by making charts.
So, the correct answer is 'All of the above'.
Question 5
1 / -0

Which one of the following statements is incorrect?

A
Alleles are different forms of the same gene.

B
Alleles are present at the same locus.

C
Alleles code for different isoforms of a protein.

D
Alleles are non-heritable.

Solution

Alleles are two alternative forms of the same gene. They are present at the same locus on a chromosome. These are heritable. In an offspring, one allele is inherited from father and the other one is inherited from mother. They code for different isoforms of a protein. They are either dominant or recessive. Dominant allele produces dominant phenotype and requires only one copy to express itself. Recessive allele requires two copies to express itself.
Thus, the correct answer is option D.
Question 6
1 / -0

Living organisms on the Earth have evolved gradually from one form to another over the million years. This statement was given by

A
Darwin

B
Robert Hook

C
Linneaus

D
Haldane

Solution

Most of the life forms that we see today have arise by changes that has occurred over the time which allow the organism a better survival. This idea was given by Charles Darwin in 1859 in his book 'The origin of species'
So, the correct answer is 'Darwin'.
Question 7
1 / -0

Darwin proposed that new species evolve from ancestral forms by _______________________.

A
Gradual accumulation of adaptions to changing environment

B
Struggle for limited resources

C
Accumulation of mutations

D
Inheritance of acquired adaptations to environment

Solution

Environmental conditions never are constant. They often get changed and these changes usually become unsuitable for the organisms to survive.
So, for survival in this changed environmental conditions, organisms show adaptations and these adaptations create reproductive isolations and organisms which start as the same species get divided into two or more different species.
So, the correct answer is option A.
Question 8
1 / -0

Which of the following statements is incorrect with respect to evolution?

A
Fossils provide important information.

B
Embryological stages of higher animals are similar.

C
Fore limbs of cows and wings of birds are analogous.

D
Variations among individuals are important for survival.

Solution

Analogous structures are the structures that differ in structure and origin but, perform similar functions. On the other hand, homologous structures are structures that are structurally similar and have a common origin, but the functions are different. The forelimbs of cows and the wings of birds have similar structures but perform different functions. Hence, they are homologous structures, not analogous.
So, the correct answer is option C.
Question 9
1 / -0

An allele is said to be recessive, when it is expressed in:

A
Heterozygous condition only

B
Homozygous condition only

C
$$F_3$$ generation

D
Both homozygous and heterozygous conditions.

Solution

An allele is said to be recessive only when it is expressed in Homozygous condition because when any dominant allele is present the phenotype will be dominant.
Therefore, the option (B) is correct.
Question 10
1 / -0

The cross TT $$\times$$ tt is a:

A
Test cross

B
Back cross

C
Monohybrid cross

D
Reciprocal cross.

Solution

A cross made between homozygous organisms for a single trait is called a monohybrid cross. In this question, a homozygous dominant (TT) tall plant is crossed with a homozygous recessive (tt) dwarf plant. Only one trait is involved i.e. height. Therefore, it is a monohybrid cross.
So, the correct option is C.

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Heredity and Evolution Test - 31

Result

Heredity and Evolution Test - 31

Score

-

Rank

-

SHARING IS CARING

Question 1

Crossing $$F_1$$ individuals with dominant individuals

Crossing $$F_1$$ individuals with recessive individuals

Crossing $$F_1$$ individuals amongst themselves

All the above

Solution

Question 2

Africa

Jawa

France

China

Solution

Question 3

Haploid

Diploid

Monohybrid cross

Dihybrid cross

Solution

Question 4

Dimples

Tongue rolling

Ear lobes attachment

All of the above

Solution

Question 5

Alleles are different forms of the same gene.

Alleles are present at the same locus.

Alleles code for different isoforms of a protein.

Alleles are non-heritable.

Solution

Question 6

Darwin

Robert Hook

Linneaus

Haldane

Solution

Question 7

Gradual accumulation of adaptions to changing environment

Struggle for limited resources

Accumulation of mutations

Inheritance of acquired adaptations to environment

Solution

Question 8

Fossils provide important information.

Embryological stages of higher animals are similar.

Fore limbs of cows and wings of birds are analogous.

Variations among individuals are important for survival.

Solution

Question 9

Heterozygous condition only

Homozygous condition only

$$F_3$$ generation

Both homozygous and heterozygous conditions.

Solution

Question 10

Test cross

Back cross

Monohybrid cross

Reciprocal cross.

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.