Download Genetics Study Guide

Name _______________________
Genetics Study Guide
Know the definitions of the following terms:
Alleles - ______________________________________________________
Fertilization - __________________________________________________
Genetic disorder - _______________________________________________
Genetics - _____________________________________________________
Genotype.- _____________________________________________________
Hybrid - ______________________________________________________
Percentage - ___________________________________________________
Phenotype - ____________________________________________________
Punnett square - _________________________________________________
___________________________________________________________
Purebred - _____________________________________________________
In ________________ reproduction the offspring is identical to the parent.
In ________________ reproduction the offspring gets half of it’s chromosomes
from each parent.
Hair color is an example of an __________________ trait .
Tt, TT, and tt are ______________________________ .
The allele combination “PP” is considered to be ______zygous ____________ .
In turtles, long(L) tails are dominant. Short(t) tails are recessive. If a turtle has a
short tail what must its genotype be? ______
If a rat has one allele for black eyes, but has red eyes, black eyes must be dominant
or recessive? ___________________
What is the combination of sex chromosomes for a male? _____
for a female? _____
How many chromosomes are in the sex cells (egg and sperm) of humans? _____
Gregor Mendel found through his experiments that alleles can be _____________ or
_______________ .
DNA is condensed into structures called ____________________________ .
Which nitrogen base is in RNA but not in DNA? _______________________
Deoxyribose in DNA is a _________________ .
DNA can be describe as the shape of a _______________________ .
In which cell organelle would you find DNA? __________________________
If half of a DNA molecule has a nitrogen base sequence of ATTGCGTG, what would
be the other half of the DNA molecules bases? __________________
What are the three types of RNA? _______________ , __________________,
____________________ .
Use the following picture to answer questions.
What is the homozygous dominant genotype in the above example? _____
What is the hybrid phenotype in the above example? _____________________
Is the shape of eyes in humans an acquired trait or inherited trait? __________
Do a punnett square for a heterozygous red-haired fox and a purebred white fox.
What percentage of their offspring will be white? _____
Use the following punnett square to answer the following questions.
LL
Ll
Ll
ll
What were the parents’ genotypes in the above punnett square? ___ x ___
What percentage of the offspring in the above example are homozygous? _____
Use the following information to answer the questions.
Albinism is an inherited genetic condition. The following pedigree shows 3
generations of a family who have albinism in their family. Answer the following
questions using the diagram.
What do the squares in the above pedigree represent? Males or Females
How many people in the above example are carriers of albinism, but are not albino? ___
What gender is most likely to be albino in this diagram? Male or Female
A white circle in the above pedigree show: _____________________________
Read the following information to answer questions.
A mother and a father who are both brown-eyed have a son named John that is also
brown eyed. John marries Jane and they have a blue-eyed daughter named Jill.
What is the dominant phenotype in the above example? _____________________
What must John’s genotype be, using the letters B and/or b? _____