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WorksheetsCh. 12 - Inheritance
Total questions: 15
Worksheet time: 8mins
In a cross between a homozygous purple flowered plant and a homozygous white flowered plant, all of the F1 hybrid offspring have purple flowers. What is the term for the white trait?
Dominant
Genotype
Recessive
Phenotype
In heterozygous individuals, there is/are ______ allele(s).
2 identical
2 different
1
0
An example of phenotype is (select 2 answers)
RR
White flowers
Rr
Purple flowers
Genotype refers to the -
Set of alleles
Physical appearance
A diagram of genetic relationships among family members is called a/n
Punnett square
Karyotype
Generation
Pedigree
The law of independent assortment states that —
Each pair of factors segregates independently of other pairs
All possible combinations of factors cannot occur in gametes
Any assortment of genes is possible regardless of parent genes
Genetic traits are independent of genes on the chromosome
All gene copies are identical
True
False
The term genotype refers to the physical appearance, while the term phenotype refers to the genetic makeup.
True
False
Homozygous recessive
RR
Rr
rr
Which of these is not part of Mendel's 5 element model?
Parents transmit genes to their offspring
Allele presence guarantees expression
Offspring obtain one copy of a gene from each parent
Not all gene copies are identical
Alleles remain discrete
Pedigrees with recessive inheritance show that heterozygotes are
Affected by the disease
Not affected by the disease
Carriers of the disease
Genotypic ratio for the F1 generation
1:2:1
3:1
1:1
2:2:1
When heterozygotes have characteristics of both homozygotes
Pleiotropy
Codominance
Polygenic
Multiple alleles
When creating a Punnett square, it is assumed that all possible types of sperm fertilize all possible types of eggs.
True
False
In a Mendelian cross for pea plants that are heterozygote for flower color (Tt), what is the probability that the offspring will be homozygous recessive?
3/4
1/2
1/4
1
