Vocabulary
Set of genes or inherited alleles responsible for the expression of a trait.
What is a genotype?
If an organism (sexually reproduced) has 38 chromosomes in its body cells, it has this many chromosomes from each parent.
What is 19 chromosomes (half from each parent).
This person is known as the "father of genetics".
Who is Gregor Mendel?
__________ are sections of DNA, which code for a trait.
What are genes?
Which of the following is example of a phenotype?
A) Hh, Bb, AA
B) Brown Hair, Blue Eyes
C) Zz, Tt, Aa
D) AA, TT, HH
B) Brown Hair, Blue Eyes
A form of a gene, one is received from each parent, represented by a letter.
What is an allele?
I received a dominant allele for eye color from my mom, and a recessive allele from my dad. What word would describe my genotype?
a) Brown b) Blue c) homozygous d) heterozygous
(Hint: My genotype looks like this ~ Bb)
d) heterozygous
If an organism has a hybrid trait, it is also called which of the following?
A) heterozygous
B) homozygous
A) heterozygous
This is a tool used to determine the probablity of an offspring's genotype, which determines the phenotype.
What is a Punnett Square?
Tt, AA, Bb, and ZZ are all examples of which?
A) phenotype
B) acquired traits
C) genotype
C) genotype
Refers to an organisms physical appearance or physical traits.
What is a phenotype?
Dominant vs Recessive: Does the following describe dominant or recessive traits?
takes two alleles to be visible
A) dominant
b) recessive
b) recessive
Which type of allele is always represented by a capital letter?
A) recessive
B) dominant
B) dominant
Traits that are developed by an envrionmental influence, such as a scar, are called ____________ traits.
A) inheritated traits
B) acquired traits
B) acquired traits
If mom has the genotype BB for eye color, and dad has the genotype Bb for eye color, where B = brown and b = blue, which is the most probably eye color of the offspring?
(HINT: you can draw a Punnett square to help you)
A) Brown B) Blue
A) Brown
Two dominant (AA) or two recessive (aa) genotypes are referred to as this type of genotype.
What is homozygous?
Dominant vs Recessive: Does the following describe dominant or recessive traits?
Always shows up when present.
A) dominant
b) recessive
A) dominant
A recessive allele is represented by a ______________ letter.
What is lowercase?
Your natural hair color is considered an ___________ trait.
A) inherited
B) acquired
A) inherited
How would we describe this genotype: bb
A) Heterozygous dominant
B) Homozygous dominant
C) Homozygous recessive
D) Heterozygous recessive
C) Homozygous recessive
Which set of alleles represents a heterozygous pair?
a) AA
b) zz
c) Bb
c) Bb
Dominant vs Recessive: Does the following describe dominant or recessive traits?
Can be a hidden trait.
A) dominant
b) recessive
b) recessive
Normal human DNA has this number of chromosomes.
What is 46?
Which of the following shows all heterzygous traits?
A) HH, bb, Aa, YY
B) hh, Bb, Aa, Yy
C) Aa, Tt, Hh, Zz
C) Aa, Tt, Hh, Zz
The instructions for an inherited trait.
(HINT: it's in your notes)
What are genes?