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WorksheetsMendelian genetics review
Total questions: 35
Worksheet time: 29mins
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
Complete a cross between A speckled flower and a red flower. Find the phenotype ratio.
What pigment determines eye color?
keratin
melanin
chlorophyll
anthocyanin
____________ eyes tend to be more common in people of Asian or African descent, while _____ eyes tend to be more common in people of European descent.
Brown / Blue
Blue / Brown
How many genes influence eye color?
1
8
50
150
What is phenotypic plasticity?
Ability of an organism to change its color based on mood
Ability of an organism to change its phenotype in response to environmental changes
The ability of an organism to change its genetic code
The ability of an organism to change its size based on temperature
How many genes control human height?
4
40
400
4,000
What causes genetic variation in meiosis?
chromosomes lining up
crossing over of chromosomes
segregation of chromosomes
chromosomes staying together
Meiosis in males (spermatogenesis) results in the formation of
one haploid gamete (sperm cell)
three diploid gametes
four diploid gametes
four haploid gametes (sperm cells)
Oogenesis results in formation of
1 egg and 3 polar bodies
2 eggs and 2 polar bodies
3 eggs and 1 polar body
4 eggs
A parent with heterozygous B blood and a parent with AB blood have a kid. The cross between these parents is pictured. Match the correct probabilities to each blood type:
Type AB
25%
Type A
25%
Type B
50%
Type O
0%
If a mother is Rh- and her developing baby is Rh+, what can happen?
Mother's cells will reject baby
Baby's cells will reject mother
Nothing will happen
Which blood type is codominant?
A
B
AB
O
The universal donor blood type is (a) and the universal recipient blood type is (b)
Which type of twin formation does the picture show?
identical twins
fraternal twins
multiple (2+) births
cannot tell based on this photo
Match each genotype to its description
HOMOZYGOUS DOMINANT
RR
HETEROZYGOUS
Rr
HOMOZYGOUS
RECESSIVE
rr
In cats, the gene for black fur (D) is dominant to the gene for grey fur (d). If two heterozygous cats have kittens, (a) are expected to be black and (b) are expected to be grey.
If a person has 2 different alleles for a gene, they are (a) , but if they have 2 of the same alleles, they are (b) .
Homozygous Dominant
BB
Homozygous Recessive
bb
Heterozygous
Bb
Genotype
Heterozygous
Phenotype
Brown Eyes
What type of twins is the illustration describing?
identical
fraternal
multiple (2+) births
cannot tell based on illustration
