MCQ-3: Inheritance

Some features of cell division are listed.

1. haploid cells are produced
2. new cells are genetically identical
3. reduction division
4.  results in variation

Which features would be associated with meiosis?

Sickle-cell anaemia is an inherited disease.

Which genotypes represented in the diagram would increase an individual’s resistance to malaria?

Cystic fibrosis is an inherited disease. The allele for cystic fibrosis is recessive.
A woman is heterozygous and her partner is homozygous dominant.
What is true of any children they produce?

Which graph shows the correct change in mass of DNA in one cell during cell division by mitosis?

Cell X contains 16 chromosomes. It divides by meiosis.
How many chromosomes do each of the new cells contain?

What happens as a result of meiosis?

Why is the allele for sickle-cell anaemia common in some parts of the world?

The diagram shows the chromosomes in the nucleus of a cell that divides by mitosis.

Which diagram shows the chromosomes in the nucleus of one of the daughter cells produced?

The diploid number for mice is 40 chromosomes.
How many chromosomes will be in a mouse cell formed by meiosis?

Which statement is correct?

During protein synthesis, what is the function of the ribosome?

The table shows some inherited features.
Which features show co-dominance?

key
✓ = co-dominant
x = not co-dominant

In some animals, B is the allele for normal skin (without spots) and b is the allele for spotted skin.
A pair of these animals has 37 offspring, 18 with spots and 19 without.
What are the most likely genotypes of the parents?

Which type of reproduction and which type of cell division produces nuclei with half the number of chromosomes?

The diagram shows a family tree and the inheritance of the ability to taste a certain substance.
The allele for the ability to taste this substance is dominant.

Which statement about the genotypes of the sisters Mary and Jeanne is correct?

What are the chromosomes for the two sexes in human beings?

The colour of a mouse’s fur is controlled by a single pair of alleles.
A mouse with black fur was crossed with a mouse with white fur. All the offspring had black fur.
What would be the most likely ratio in several litters of offspring if two of these black offspring were crossed?

A pure-breeding white mouse was crossed with a pure-breeding black mouse. All their offspring were black.
Then, one of the offspring was bred with a pure-breeding white mouse. They produced 10 baby mice.
What are the most likely colours of these mice?

How does a haploid nucleus differ from a diploid nucleus of the same species?

Most birds have a coloured pigment in their feathers, but in a few individuals, pigment is absent and the birds are albinos.
Albinism occurs when a bird is homozygous recessive for the gene which creates the coloured pigment.
If two albino birds mated, what describes the appearance of their offspring?