WorksheetsYear 8 Genetics
Total questions: 12
Worksheet time: 12mins
Name
Class
Date
1.
Are recessive traits shown with capital or lowercase letters?
a)
Capital
b)
Lowercase
2.
The physical appearance or the way a gene looks is known as it's....
a)
genotype
b)
allele
c)
gene
d)
phenotype
3.
The mathematical chance that something will happen is known as...
a)
chance
b)
luck
c)
probability
4.
The different forms of genes are known as
a)
environment
b)
probability
c)
traits
d)
alleles
5.
An allele or gene that always shows is
a)
recessive
b)
dominant
c)
hidden
d)
present
6.
Two of the same genes for a trait (sometimes called purebred). BB or bb
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
7.
Two different genes for a trait (sometimes called hybrid). Bb
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
8.
G = dominant green and y = recessive yellow
A fish has a Gy genotype, what will its phenotype be?
A fish has a Gy genotype, what will its phenotype be?
a)
yellow
b)
green
c)
greenish-yellow
d)
red
9.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
10.
Heredity is the passing of traits from _____________________ to _____________________
a)
predators to prey
b)
water to rain
c)
parents to offspring
d)
fungi to protists
11.
Which is a true statements about this picture?
a)
Brown is recessive
b)
Brown is dominant
c)
Blue is dominant
d)
Blue is codominant
12.
What are the possible phenotypes in this punnett square?
a)
Bb, bb, BB
b)
purple, white
c)
Bb, bb
d)
light purple
100 %
