Q.1
What does the notation TT mean to a geneticist?
  • two dominant alleles
  • heterozygous alleles
  • at least one dominant allele
  • one dominant and one recessive allele
Q.2
Autosomes are
  • chromosomes found in autotrophs, only
  • chromosomes that automatically correct all errors in the DNA
  • chromosomes that determine traits other than sex
  • chromosomes that determine the sex of the individual
Q.3
The 2 male sex chromsomes are _____.
  • XY
  • XX
Q.4
An organism’s genotype is its
  • stem height
  • feather color
  • genetic makeup
  • physical appearance
Q.5
Walther Flemming noticed chromosome in the larvae of .........................
  • Tadpole
  • Salamanders
  • Bacteriophage
  • Amoeba
Q.6
The term “chromosomes” literally means
  • Inherited bodies
  • Twisted threads
  • Coloured bodies
  • Shining threads
Q.7
The substance that chromosomes are composed of is called
  • nucleosomes
  • DNA
  • chromatin
  • histones
Q.8
Haploid in the number of chromosomes they contain (example: sperm or egg)
  • somatic cells
  • muscle cells
  • gametes
  • neurons
Q.9
Made of chromatin and become visible during cell division
  • chromosomes
  • histones
  • mitochondria
  • nucleosomes
Q.10
Determine the sex of an individual and are represented by XX or XY
  • sex chromosomes
  • autosomes
  • somatic cells
  • diploid cells
Q.11
Body cells are also known as
  • prokaryotic cells
  • somatic cells
  • gametes
  • sperm or egg
Q.12
A segment of DNA
  • nucleosome
  • gene
  • histone
  • chromatin
Q.13
A histone core with DNA wrapped around it is called a
  • somatic cell
  • gene
  • centromere
  • nucleosome
Q.14
Chromosomes contain genetic information in the form of
  • DNA
  • histone
  • centromere
  • karyotypes
Q.15
A chromosome is composed of two identical sister
  • centromeres
  • chromatids
  • autosomes
  • somatic cells
Q.16
The disc shaped protein core that DNA wraps around is called
  • histone
  • nucleosome
  • chromatin
  • gene
Q.17
Cells that contain two sets of chromosomes (example:=are called
  • gametes
  • haploid
  • diploid
  • chromatin
Q.18
A picture or image of a person's chromosomes taken through a microscope
  • pedigree
  • centromere
  • karyotype
  • none are correct
Q.19
Sister chromatids are held together by a
  • histone core
  • chromatin
  • nucleosome
  • centromere
Q.20
Gametes that contain one set of chromosomes (example: n =are called
  • diploid
  • autosomes
  • haploid
  • somatic cells
0 h : 0 m : 1 s