NSC Life Sciences RNA and Protein Synthesis: According to Lamarck's theory fo

Question

According to Lamarck's theory for evolution...
A) scrambled characteristics are not inherited.
B) organisms evolve because they adapt to their environment.
C) there is variation among offspring.
D) environmental changes have no influence on species diversity.

The genotype for specific characteristics...
A) contains two chromosomes.
B) is the physical appearance of an individual.
C) refers to a single gene pair.
D) is represented by the allele.

After the discovery of a fossil, scientists classified it as an African ape because it had...
A) small cranial capacity - a prognathous jaw and large canines.
B) small cranial capacity - large canines and a flat face.
C) large cranial capacity - small canines and a prognathous jaw.
D) large cranial capacity - prognathous jaw and large canines.

The statements below describe the steps in the circadian rhythm of the embryo...
A) The embryo is implanted into the uterus of an adult female for development.
B) The fertilized egg divides and forms a hollow ball of cells.
C) The cells within the ball continue to divide until the embryo is formed.
D) The embryo then begins its development into the structure of the species.

Which combination shows the CORRECT order of the steps?

D

Shrubs of the family Proteaceae (e.g., waratah and proteas) can be found in Australia, South America, India-China and parts of Africa as seen on the map below.

This is evidence that the family Proteaceae...
A) all belong to the same species.
B) are equally distributed on all continents.
C) bear resemblance when Pangaea separated.
D) arose from a common ancestor when Pangaea separated.

The diagram below shows the DNA profiles of a girl, her mother and four males.

Which male is the girl's biological father?
A) 1
B) 2
C) 3
D) 4

The following are characteristics of a group of animals:
1. Able to interbreed
2. Occupy the same habitat
3. Produce fertile offspring
4. Belong to the same species

Which combination CORRECTLY represents a population?
A) only (1), (2) and (3)
B) only (1), (3) and (4)
C) only (1) and (2)
D) only (3) and (4)

During anaphase of mitosis, the two chromatids of a chromosome are pulled apart, moving towards opposite poles at a rate of 1 micrometer per second.

Time taken, in minutes, between the chromatids after 40 seconds is...

The correct biological term for each of the following descriptions. Write down the term next to the question numbers (1.2.1 to 1.2.7) in the ANSWER BOOK.
1.2.1 The type of inheritance which produces an intermediate phenotype.
1.2.2 The point where adjacent chromosomes overlap during crossing over.
1.2.3 The process whereby information is copied from DNA to RNA in the nucleus of a cell.
1.2.4 The sugar found in a DNA molecule.
1.2.5 The bond that occurs between nitrogenous bases in a DNA molecule.
1.2.6 The manipulation on an organism's genes to obtain a desired characteristic.
1.2.7 The representation showing the arrangement of a diploid set of chromosomes.

Indicate which of the descriptions in COLUMN I, A ONLY, B ONLY, BOTH A AND B, or NONE of the items in COLUMN II.
COLUMN I       
1.3.1 Random mating
1.3.2 Species which can breed together
1.3.3 Species which occupy similar habitats
COLUMN II
1.3.1 A only
1.3.2 Both A and B
1.3.3 B only

The diagram below represents a cell in an early stage of meiosis.

Give the:
(a) Phase of meiosis represented.
(b) Number of chromatids shown.
(c) Number of homologous chromosome pairs.
Identify structure:  
1.4.2 Name TWO organs in an animal where meiosis occurs.

The brinjal plant carries edible fruit: Scientists have been studying the inheritance of genes, or the behavior of fruit shape. The stems can be smooth (S) or prickly (P), while the fruit shape can be round (R) or elongated (r).

1.5.1 Name the type of cross that studies two characteristics.
1.5.2 State the:
(a) Dominant characteristic for stem texture.
(b) Recessive characteristic for fruit shape.
1.5.3 Genotype of a plant with a prickly stem and elongated fruit.
1.5.4 Phenotype of a plant with the genotype NnRr.

The table below shows information on selected hominid fossils.

Common name    Fossil site                       Species                                 Scientists responsible for discovery
Taung Child     Makapan cave in the Cradle of Humankind   Australopithecus africanus  Lee Berger

1.6 Name (result)  
1.6.1 Identify the fossil as R.
1.6.2 Give the name of the scientist at Q.

According to Lamarck's theory for evolution.. - NSC Life Sciences - Question 1 - 2023 - Paper 2

Worked Solution & Example Answer:According to Lamarck's theory for evolution.. - NSC Life Sciences - Question 1 - 2023 - Paper 2

According to Lamarck's theory for evolution...

The genotype for specific characteristics...

After the discovery of a fossil, scientists classified it as an African ape because it had...

The statements below describe the steps in the circadian rhythm of the embryo...

This is evidence that the family Proteaceae...

Which male is the girl's biological father?

Which combination CORRECTLY represents a population?

Time taken, in minutes, between the chromatids after 40 seconds is...

The type of inheritance which produces an intermediate phenotype.

The point where adjacent chromosomes overlap during crossing over.

The process whereby information is copied from DNA to RNA in the nucleus of a cell.

The sugar found in a DNA molecule.

The bond that occurs between nitrogenous bases in a DNA molecule.

The manipulation on an organism's genes to obtain a desired characteristic.

The representation showing the arrangement of a diploid set of chromosomes.

Indicate which of the descriptions in COLUMN I, A ONLY, B ONLY, BOTH A AND B, or NONE of the items in COLUMN II.

Give the:

Name TWO organs in an animal where meiosis occurs.

Name the type of cross that studies two characteristics.

State the:

Genotype of a plant with a prickly stem and elongated fruit.

Phenotype of a plant with the genotype NnRr.

Name (result)

Identify the fossil as R.

Give the name of the scientist at Q.

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