In humans, albinism (a total lack of pigmentation) is inherited as a recessive trait. If an albino man and a non-albino woman (whose father is albino) have a child, calculate the probability that the child is albino.

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Half of a strand of DNA bases is shown above. Identify the complementary DNA strand.

Choose the correct term for the following definition: ‘Genetic change in the characteristics of a species over many generations, resulting in the formation of new species.’

Which of the following should be an outcome of natural selection?

Domesticated animals such as budgerigars and dogs show a great variety of shapes, colours and sizes. Observing animals in the wild, such as a population of wild budgerigars or wolves, there is less variability. Which of the following is a likely reason for this difference?

 Two English biologists, Cain and Sheppard, studied predation of the brown-lipped snail by a bird called the song thrush. The snails had two basic shell colours, yellowish or pinkish-brown.

In one experiment in a woodland, they studied the predation on the snails in early and late spring. In early spring the woodland floor was covered in many dead leaves. In late spring the leaves had decayed and been covered by grass. They obtained the following results:

Which of the following is a reasonable deduction?

In pea plants, the tall allele (T) is dominant over dwarf (t). Which genotypic ratio below would come from a punnet square showing the cross between dwarf peas and heterozygous tall peas and the F1 generation?

 Which of the options below explain why variation is necessary before natural selection can occur?

Below is a pedigree that shows the heredity trace of Huntington’s disease over three generations (I, II, III).  There are no carriers for Huntington’s Disease- you either have it or you don’t

Which members of the family in the above pedigree are afflicted with Huntington’s Disease?

Referring to the pedigree above what would the genotypes of individuals 1 & 2 be respectively?

The diagram below shows a simplified model of a part of a DNA molecule.

The parts labelled 1, 2, and 3 are respectively are?

In tomatoes red fruit is controlled by a single dominant allele, R. Tomato plants homozygous for the recessive allele, r, are yellow in colour. Two plants that both produce red fruit are crossed, however some of the plants from this cross bear yellow fruit.

The genotypes of the parent plants are?

 The family tree below shows the inheritance of a characteristic in a particular family. From the diagram, it possible to be sure that the gene for this characteristic is present in:

A biologist was studying a population. Of mice that lived in an area with few trees and scattered low shrubs separated from each other by large areas of bare soil. He found that the mice had two genes that controlled their coat colour. One tended to give the coat a dark-brown colour, while the other produced a lighter yellowish brown colour.

The area contained three different soil types: dark red clay, pale yellow sand and light grey sand. Studies of the proportion of mice with the different coat colour were done and are shown in the table. The area was a very dry semi-desert climate. The mice were preyed upon by hawks that hunted mainly in the morning and late afternoon.

Which of the following is a fair interpretation of the data?

A scalar is:

All of the following are vector quantities except:

Convert 90km/h to m/s

Which of the above graphs, A, B, or C represents an object moving at a constant velocity?

Shown in the image is a displacement–time graph for Bob as he walks to a friend’s house and returns over a day. Which of the following statements concerning this journey is correct?

A car takes 5.0 hours to cover 450 kilometers. What is the average speed?

A batsman hits a ball into the outfield. His average running speed is 4.0 m/s. How long will he take to make three runs if the pitch is 20 meters long?

An object at rest or that is moving in a straight line with a constant speed will remain at rest or in motion unless an unbalanced force acts upon it. This is . .

Which of the following statements agrees with one of Newton’s laws of motion?

A sled is moving across a level, frozen pond, with negligible friction acting. To maintain a steady velocity, you would need to apply:

A 1 500 kg car accelerates from 0 m/s to 20 m/s in 5.0 s. Calculate the force that the engine must exert on this car in order for it to accelerate

A weightlifter lifts a barbell that has a total mass of 80kg from the floor to a height of 1.8m above the ground. Calculate the gravitational potential energy of the barbell at this height.

The mass of a motorbike together with its rider is 230 kg. If the motorbike is travelling at 80 km/h determine its kinetic energy.

Identify the type of mutation shown in the image

Identify the sex of the individual from the karyotype

What is the work done when a 20-N force pushes a cart 3.5 m?

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy?

A 20 kg bike accelerates at 10 m/s². What was the force?

A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s². Determine the mass of the encyclopedia?

Jerry walked from home to school, then from the school to the park. What is his total displacement?

Which runner won the race?

T is brown eyes, and t is blue. If an organism has the genotype Tt. What colour would their eyes be?

What is the probability/likelihood of the individual expressing the recessive trait

Determine the phenotype that would appear in the missing punnet square

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