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I Dream of Gene-ie (genetics)

Total questions: 14

Worksheet time: 2hrs 13mins

Name
Class
Date
1.

Species that produce gametes through MEIOSIS undergo___________ reproduction

a)

asexual

b)

sexual

c)

neither

2.

A huge advantage of sexual reproduction is

a)

high variation in offspring

b)

low variation in offspring

c)

not much time or energy needed

d)

lots of time and energy needed

3.

Meiosis involves ALL of the following EXCEPT_________

a)

gamete production

b)

somatic cells (body cells, non-sex cells) production

c)

4 haploid daughter cells

d)

crossing over of DNA

4.

Dominant genetic disorder involving genes 1, 14, and 21. Causes progressive mental deterioration in old age

a)

sickle cell anemia

b)

autism

c)

Alzheimer's

d)

Cystic Fibrosis

5.

A human body (somatic) cell usually has how many chromosomes?

a)

6

b)

22

c)

4

d)

46

6.

Why do we need meiosis?

a)

To double the number of chromosomes going into sex cells

b)

To halve the number of chromosomes going into sex cells

c)

To triple the number of chromosomes going into sex cells

7.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
8.
What process, and which type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
9.
What is one of the advantages, why is it better to reproduce sexually versus asexually?
a)
survival of the fittest
b)
overproduction
c)
genetic variation
d)
cloning
10.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
11.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
12.

Alzheimer's is hereditary

a)

False

b)

True

13.
What ratio of the offspring from the cross shown will be homozygous recessive for the  trait of tallness? 
a)
0 in 4
b)
1 in 4
c)
2 in 4
d)
4 in 4
14.
In a pedigree, what shape represents a male?
a)
circle
b)
square
c)
triangle
d)
diamond