Font size
WorksheetsUnderstanding Inheritance
Total questions: 25
Worksheet time: 27mins
Scientists discovered that inside each cell is a nucleus that contains thread-like structures called?
Genes
Alleles
Chromosomes
DNA
Chromosomes contain ______ __________ controls traits.
(a)
Chromosomes exist as...
Pairs
Groups
Thirds
Singles
Humans have how many pairs of chromosomes?
46
29
96
23
Each pair has how many chromosomes from each parent? How many from the father, how many from the mother?
What is a section on a chromosome that has genetic information from one trait?
Allele
Phenotype
Gene
Genotype
What are the different forms of a gene called?
Genotypes
Alleles
Phenotypes
Gene
Geneticists call how a trait appears, or is expressed, is the trait's what?
(a)
The two alleles that control the phenotype of a trait are called the trait's what?
(a)
What do scientists use to represent the alleles in a genotype?
Numbers
Symbols
Colors
Letters
In genetics, what does the upper and lowercase letters represent?
Which allele, if present is written first?
(a)
When the two alleles of a gene are the same, its genotype is?
Homozygous
Heterozygous
If the two alleles of a gene are different, its genotype is?
Homozygous
Heterozygous
The chance of getting an outcome can be represented by what?
(a)
What are the two models used to predict and identify traits among genetically related individuals?
What is a model used to predict possible genotypes and phenotypes of offspring?
Diagram
Pedigree
Punnett Square
Chart
The ratio of phenotype is written?
4:2
5:3
9:3
3:1
What is another model that can show inherited traits?
Chart
Diagram
Punnett Square
Pedigree
Alleles show ________ ________ when the offspring's phenotype is a combination of the parents' phenotypes.
(a)
When both alleles can be observed in a phenotype, this type of interaction is called.
(a)
Unlike the genes in Mendel's pea plants, some genes have more, what would this be called?
What is an example of a trait that is determined by multiple alleles?
(a)
What occurs when multiple genes determine the phenotype of a trait?
Polygenic Inheritance
Incomplete Dominance
Codominance
Inheritance
What can affect an organism's phenotype?
(a)
