WorksheetsHeredity Unit Review
Total questions: 19
Worksheet time: 32mins
Which 3 of the following are the processes that increase genetic variation in sexual reproduction?
Crossing Over
Independent Assortment
Mitosis
Random fertilization
Splitting Chromatids (Haploidy)
2 points
Somatic cells in carrots have 18 chromosomes. Therefore, carrot sperm (pollen) would have how many chromosomes?
(Picture is carrot flowers)
(a)
3 points
Match the processes with the type of cells produced.
Skin cells (Somatic 1)
Mitosis (1)
Blood cells
(Somatic 2)
Mitosis (2)
Egg cells
(Gamete 1)
Meiosis (1)
Sperm cells
(Gamete 2)
Meiosis (2)
Zygote
Fertilization
Why is crossing over important in sexual reproduction?
It combines the two sets of DNA from the mother's egg and the father's sperm
It creates an identical copy of the original DNA
It shuffles the DNA from your parents when you make gametes (sex cells)
It randomly determines which gamete gets which copies of each chromosome.
2 points
If you cross two heterozygotes, what percentage of the offspring will show the dominant phenotype?
(a)
2 points
If you cross a heterozygous parent with a homozygous recessive parent, what percentage of the offspring will be homozygous recessive
(a)
What process is responsible causing plants to wilt or sag when it is dry?
Active transport of ions
Photosynthesis
Osmosis
Cell respiration
Worth 3 pts
Select the two genotypes of these two parents.
CcHh
ccHh
CCHh
Cchh
ccHH
Which description best identifies this type of cellular transport?
Active transport, because energy is used to move molecules against the concentration gradient
Facilitated diffusion, because energy is used to move molecules with the concentration gradient
Osmosis, because energy is not used to move molecules with the concentration gradient
Endocytosis, because energy is not used to move molecules against the concentration gradient
Worth 3 pts
What percentage of the offspring from a BbLl x BbLl cross would be expected to be heterozygous for both traits?
Use either the FOIL method or the double-monohybrid method
(a)
What function of the cell membrane is shown here?
Forming a hard protective layer around the cell.
Regulating what gets in and out of the cell.
Communication and cell signaling.
Movement of the cell through the environment.
What effect does crossing over have of sexual reproduction?
Shuffles the parent's DNA to create 4 unique combinations of their alleles.
Producing 4 genetically identical gametes (sex cells).
Shuffles the parent's DNA to create genetically different body cells for cell differentiation.
Producing 4 unique and specialized cells that perform different functions in the body.
2 points
In cattle the allele for cloven hooves (H) is dominant over the allele for mule-foot hooves (h).
The phenotype for each trait is shown in this picture.
What is percentage of the offspring of heterozygous parents will have mule-foot hooves?
(a)
2 points
What is the probability of producing offspring with the recessive trait if we breed a heterozygous parent with a homozygous dominant parent?
(MISTAKE CORRECTED: Answer is NOT 50%)
(a)
This image is an example of:
Codominance
Multiple alleles
Incomplete dominance
Mendelian inheritance
A polygenic trait
If you breed two of the pink flowers together, what would be the phenotypes of the offspring?
100% Pink
75% Pink
25% White
25% Red
50% Pink
25% White
33% Red
33% Pink
33% White
50% Red
50% White
A woman has type AB blood and her husband has type O blood. The doctor tells them their child has type O blood. She thinks this is very strange. Why?
She can't be the mother of a type O child.
Her husband can't be the father of a type O child.
Type O blood is very rare.
There's nothing strange about it.
Two pea plants are crossed that are heterozygous for both height and flower color. Tall is dominant to short and purple is dominant to white. What is the phenotypic ratio of the children.
9:3:3:1
10:2:2:2
5:4:4:3
6:6:2:2
2 pts
Match the following heredity vocabulary terms
Homozygous dominant
AA
Heterozygous
Ao
Homozygous recessive
oo
Blood Phenotypes
Type A, Type B, Type AB, & Type O
Blood Genotype
AA, AB, BB, Bo, Ao, & oo
