Punnet Square Diagrams

Question 1

What is a phenotype?

Answer 1

The expression of tratis in an organism.

Question 2

What are alleles?

Answer 2

They are certain characteristics of an organism, alternative versions of a gene.

Question 3

What is a genotype?

Answer 3

It is the genetic code of the phenotypes, combination of parental alleles.

Question 4

What is the purpose of a punnet square diagram

Answer 4

It can help predict potential genotypes and phenotypes of offspring.

Question 5

SYsy is an example of a?

genotype, phenotype or allele

Answer 5

Genotype

Question 6

How can a punnet square diagram predict potential genotypes and phenotypes given parental alleles.

Answer 6

By crossing the parent alleles in a punnet square, potential genotypes are created. Genotypes are code for phenotypes and therefore physical traits and characteristics can be predicted.

Question 7

How are genotypes passed down to offspring through inheritance and why some phenotypes may only re-emerge further down the inheritance line.

Answer 7

People can carry recessive genes whilst displaying the dominant gene, such as having a recessive blue eyed gene whilst showing brown eyes. If the recessive gene is then crossed with another person with the same recessive gene, there is a chance that the recessive gene shows.

Question 8

Are genotypes always passed down between people.

Answer 8

No, because there are multiple different genotypes that a person could be.

Question 9

What are Mendels 3 laws of inheritance?

Answer 9

Dominance
Segregation
Independent Assortment

Question 10

What is the law of dominance?

Answer 10

That an allele can be dominant or recessive and that a dominant gene will always be expressed

Question 11

What is the difference between an Allele and a gene.

Answer 11

Genes are the selection of options that a person couold have. Whereas the allele is what is expressed by the person.