NCEA level 1 Genetics

Summery16
Quiz by Summery16, updated more than 1 year ago
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Question 1

Question
Different forms of the same gene - they can be dominant or recessive
Answer
  • allele
  • trait

Question 2

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a fertilized ovum/egg that contains the full set of chromosomes
Answer
  • zygote
  • gamete

Question 3

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

Question 4

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threadlike structure of DNA and protein found in the nucleus of cells- carries genetic information in the form of genes
Answer
  • nucleotide
  • chromosome
  • cell

Question 5

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cell part that contains chromosomes
Answer
  • nucleus
  • gene

Question 6

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meiosis
Answer
  • 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

Question 7

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exchange of genetic information between homologous chromosomes
Answer
  • crossing over
  • independent assortment

Question 8

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cross between unknown genotype organism and a homozygous recessive to work out the genotype of the offspring
Answer
  • punnet square
  • test cross

Question 9

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

Question 10

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having the same structural features (length) and pattern of genes
Answer
  • homozygous chromosomes
  • variation
  • homologous chromosomes
  • mutation

Question 11

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a genetically determined characteristic
Answer
  • trait
  • allele
  • gene

Question 12

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

Question 13

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process responsible for forming new alleles
Answer
  • mutation
  • variation
  • independent assortment

Question 14

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chromosomes X and Y that determine the sex of an individual
Answer
  • sex chromosomes
  • homologous chromosomes
  • gamete

Question 15

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individuals that are homozygous - will always produce the same offspring when crossed together
Answer
  • pure breeding
  • sexual reproduction

Question 16

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pest infestation, disease, drought or flood could be examples of a... Changing environment
Answer
  • True
  • False

Question 17

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having a full set of chromosomes (2n); having a pair of each type of chromosome
Answer
  • diploid
  • haploid

Question 18

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organisim produced asexually from one parent - offspring identical to both its parent and siblings
Answer
  • clone
  • homozygous

Question 19

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substance carrying organism's genetic information
Answer
  • deoxyribonucleic acid
  • chromosome

Question 20

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difference between organisms within a population - can be continuous or discontinuous
Answer
  • variation
  • mutation

Question 21

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the observable characteristics of an individual resulting from its genotype
Answer
  • phenotype
  • genotype

Question 22

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forms the basic stuctural unit of DNA, composed of a sugar molecule, a phosphate group and a base
Answer
  • nucleotide
  • amino acids

Question 23

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basic building blocks of proteins
Answer
  • amino acids
  • DNA

Question 24

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the particular alleles of an organisim
Answer
  • genotype
  • phenotype

Question 25

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an individual with two alleles that are different for a particular trait
Answer
  • heterozygous
  • homozygous

Question 26

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an individual with two alleles that are the same for a particular trait
Answer
  • homozygous
  • heterozygous

Question 27

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individual that carries a gene for a particular trait, does not express the trait, but can pass that trait on
Answer
  • carrier
  • recessive
  • clone

Question 28

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sexual reproduction involves two parents - offspring are different to the parent and to each other
Answer
  • True
  • False

Question 29

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the joining of the male and female gamete is called fertilization
Answer
  • True
  • False

Question 30

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recessive
Answer
  • 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'

Question 31

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name for the offspring of the cross BB x bb and their offspring and their offspring...
Answer
  • F1 generation
  • F2 generation
  • F3generation

Question 32

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What are the parts of DNA involved in pairing
Answer
  • cytosine
  • guanine
  • adenine
  • thymine
  • nucleotide

Question 33

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gamete
Answer
  • 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

Question 34

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important to population and species survival in a changing environment
Answer
  • variation
  • clones
  • independent assortment

Question 35

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a chart that shows all the possible combinations of alleles that can result from a genetic cross
Answer
  • punnet square
  • test cross
  • pedigree chart

Question 36

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carries instructions to the next generation and determines phenotype
Answer
  • DNA
  • chromosomes
  • genes

Question 37

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a permanent change in the base sequence of DNA
Answer
  • mutation
  • variation

Question 38

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asexual reproduction
Answer
  • 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

Question 39

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each homologous pair of chromosomes lines up at equator - maternal or parental - independently of other homologous pairs
Answer
  • independent assortment
  • crossing over
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