Genetics And Heredity Unit Test REVIEW Question Preview (ID: 29832)


Mendel, Punnett Squares, Genes, Chromo, Pedigrees, Basic Sex Vs Asex Repro. TEACHERS: click here for quick copy question ID numbers.

What does a Punnett square show?
a) all the possible types of offspring parents could produce
b) the exact type and percentage of offspring parents will produce
c) the possible pedigrees that Mendel's genetic crosses produced
d) only the dominant alleles in a genetic cross

What do sexual reproduction and asexual reproduction have in common?
a) the offspring are identical to one parent
b) the offspring traits are unpredictable
c) the offspring are always different from the parents
d) traits are passed to offspring for the continuation of the species

Factors that control traits are called . . .
a) punnett squares
b) genes
c) pedigrees
d) hybrids

Where are chromosomes located?
a) inside the nucleus
b) inside the genes
c) inside the DNA
d) inside the traits

A purebred blue fish is crossed with a purebred red fish. The resulting offspring are 100% patchwork fish. Why does this happen?
a) Blue is dominant over red.
b) Both blue and red are dominant.
c) Red is dominant over blue.
d) Neither blue nor red is dominant.

A purebred red cow is crossed with a purebred white cow. The result is a roan cow (red and white cow). Why does this happen?
a) Red has complete dominance.
b) White has complete dominance.
c) Red and white are codominant.
d) Red and white are corecessive.

A cell has 40 chromosomes. How many chromosomes will be in each daughter cell after the parent cell has undergone meiosis?
a) 40
b) 30
c) 20
d) 10

A cell has 8 chromosomes. How many chromosomes will be in each daughter cell after the parent cell has undergone mitosis?
a) 16
b) 8
c) 4
d) 2

An organism's physical appearance is its
a) genotype
b) phenotype
c) homozygous
d) heterozygous

An organism's genetic makeup is its
a) genotype
b) phenotype
c) homozygous
d) heterozygous

In peppers, red is dominant over yellow. If a red pepper is crossed with a yellow pepper and all of the offspring are red, then what are the probable genotypes of the parents?
a) RR and rr
b) Rr and Rr
c) Rr and rr
d) rr and rr

In peppers, hot flavor is dominant over mild flavor. A hot pepper is crossed with a mild pepper and these were the results: 42% hot, 58% mild. What are the probable genotypes of the parents?
a) RR and rr
b) Rr and RR
c) Rr and rr
d) Rr and Rr

In poodles, white is recessive and black is dominant. Suppose two black poodles are crossed, resulting in 9 babies. If two of the babies are white and the rest are black, what are the probable genotypes of the parents
a) Rr and Rr
b) Rr and RR
c) RR and rr
d) RR and RR

Which of the following shows a cross of two hybrid flowers?
a) Aax AA
b) aa x aa
c) Aa x Aa
d) AA x aa

Chromosomes are made of
a) a cell membrane and mitochondria
b) a nucleus which is the control center of the cell
c) male and female sex cells
d) strands of DNA , segmented into genes

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