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NCEA level 1 Genetics

Question 1 of 39

1

Different forms of the same gene - they can be dominant or recessive

Select one of the following:

  • allele

  • trait

Explanation

Question 2 of 39

1

a fertilized ovum/egg that contains the full set of chromosomes

Select one of the following:

  • zygote

  • gamete

Explanation

Question 3 of 39

1

allele which is always expressed even if only one is present- written with an upper-case letter e.g. "A"

Select one of the following:

  • dominant

  • recessive

Explanation

Question 4 of 39

1

threadlike structure of DNA and protein found in the nucleus of cells- carries genetic information in the form of genes

Select one of the following:

  • nucleotide

  • chromosome

  • cell

Explanation

Question 5 of 39

1

cell part that contains chromosomes

Select one of the following:

  • nucleus

  • gene

Explanation

Question 6 of 39

1

meiosis

Select one of the following:

  • cell division in testies and ovaries producing four new cells (gametes) - genetically different to each other, and to the parent cell

  • cell division body cells for growth and repair - produces 2 new cells genetically identical to each other and to the parent cell

Explanation

Question 7 of 39

1

exchange of genetic information between homologous chromosomes

Select one of the following:

  • crossing over

  • independent assortment

Explanation

Question 8 of 39

1

cross between unknown genotype organism and a homozygous recessive to work out the genotype of the offspring

Select one of the following:

  • punnet square

  • test cross

Explanation

Question 9 of 39

1

short length of DNA that carries the genetic code for a particular trait/characteristic or cell activity

Select one of the following:

  • DNA

  • chromosome

  • cell

  • gene

Explanation

Question 10 of 39

1

having the same structural features (length) and pattern of genes

Select one of the following:

  • homozygous chromosomes

  • variation

  • homologous chromosomes

  • mutation

Explanation

Question 11 of 39

1

a genetically determined characteristic

Select one of the following:

  • trait

  • allele

  • gene

Explanation

Question 12 of 39

1

cell division body cells for growth and repair - produces 2 new cells genetically identical to each other and the parent cell

Select one of the following:

  • mitosis

  • meiosis

Explanation

Question 13 of 39

1

process responsible for forming new alleles

Select one of the following:

  • mutation

  • variation

  • independent assortment

Explanation

Question 14 of 39

1

chromosomes X and Y that determine the sex of an individual

Select one of the following:

  • sex chromosomes

  • homologous chromosomes

  • gamete

Explanation

Question 15 of 39

1

individuals that are homozygous - will always produce the same offspring when crossed together

Select one of the following:

  • pure breeding

  • sexual reproduction

Explanation

Question 16 of 39

1

pest infestation, disease, drought or flood could be examples of a... Changing environment

Select one of the following:

  • True
  • False

Explanation

Question 17 of 39

1

having a full set of chromosomes (2n); having a pair of each type of chromosome

Select one of the following:

  • diploid

  • haploid

Explanation

Question 18 of 39

1

organisim produced asexually from one parent - offspring identical to both its parent and siblings

Select one of the following:

  • clone

  • homozygous

Explanation

Question 19 of 39

1

substance carrying organism's genetic information

Select one of the following:

  • deoxyribonucleic acid

  • chromosome

Explanation

Question 20 of 39

1

difference between organisms within a population - can be continuous or discontinuous

Select one of the following:

  • variation

  • mutation

Explanation

Question 21 of 39

1

the observable characteristics of an individual resulting from its genotype

Select one of the following:

  • phenotype

  • genotype

Explanation

Question 22 of 39

1

forms the basic stuctural unit of DNA, composed of a sugar molecule, a phosphate group and a base

Select one of the following:

  • nucleotide

  • amino acids

Explanation

Question 23 of 39

1

basic building blocks of proteins

Select one of the following:

  • amino acids

  • DNA

Explanation

Question 24 of 39

1

the particular alleles of an organisim

Select one of the following:

  • genotype

  • phenotype

Explanation

Question 25 of 39

1

an individual with two alleles that are different for a particular trait

Select one of the following:

  • heterozygous

  • homozygous

Explanation

Question 26 of 39

1

an individual with two alleles that are the same for a particular trait

Select one of the following:

  • homozygous

  • heterozygous

Explanation

Question 27 of 39

1

individual that carries a gene for a particular trait, does not express the trait, but can pass that trait on

Select one of the following:

  • carrier

  • recessive

  • clone

Explanation

Question 28 of 39

1

sexual reproduction involves two parents - offspring are different to the parent and to each other

Select one of the following:

  • True
  • False

Explanation

Question 29 of 39

1

the joining of the male and female gamete is called fertilization

Select one of the following:

  • True
  • False

Explanation

Question 30 of 39

1

recessive

Select one of the following:

  • allele which is only expressed when two of them are present - written in a lower-case letter E.g. 'a'

  • allele which is always expressed even if only one is present - written with an upper-case letter E.g. 'A'

Explanation

Question 31 of 39

1

name for the offspring of the cross BB x bb and their offspring and their offspring...

Select one or more of the following:

  • F1 generation

  • F2 generation

  • F3generation

Explanation

Question 32 of 39

1

What are the parts of DNA involved in pairing

Select one or more of the following:

  • cytosine

  • guanine

  • adenine

  • thymine

  • nucleotide

Explanation

Question 33 of 39

1

gamete

Select one or more of the following:

  • reproductive cells that contain half the number of chromosomes compared to the parent cell

  • body cells that contain the same number of chromosomes as the parent cell

Explanation

Question 34 of 39

1

important to population and species survival in a changing environment

Select one of the following:

  • variation

  • clones

  • independent assortment

Explanation

Question 35 of 39

1

a chart that shows all the possible combinations of alleles that can result from a genetic cross

Select one of the following:

  • punnet square

  • test cross

  • pedigree chart

Explanation

Question 36 of 39

1

carries instructions to the next generation and determines phenotype

Select one of the following:

  • DNA

  • chromosomes

  • genes

Explanation

Question 37 of 39

1

a permanent change in the base sequence of DNA

Select one of the following:

  • mutation

  • variation

Explanation

Question 38 of 39

1

asexual reproduction

Select one of the following:

  • reproduction involving only one parent (usually female) - offspring genetically identical to the parent and each other

  • reproduction involving two parents - offspring different to the parents

Explanation

Question 39 of 39

1

each homologous pair of chromosomes lines up at equator - maternal or parental - independently of other homologous pairs

Select one of the following:

  • independent assortment

  • crossing over

Explanation