Genetics and Heredity

Front

What is a homozygous dominant genotype?

Back

A homozygous dominant genotype consists of two identical dominant alleles, represented as 'AA'.

Front

What does a lower case letter represent in a Punnett square?

Back

A lower case letter represents a recessive allele.

Front

How is a recessive allele represented?

Back

A recessive allele is represented by a lower-case letter.

Front

What are the genotypes of the parents if one has shaggy fur (dominant) and the other has short fur (recessive)?

Back

The genotypes of the parents are Ff (shaggy fur) and ff (short fur).

Tags

NGSS.HS-LS3-1

Front

In a genetic cross Tt x Tt, what is the probability of producing a short plant?

Back

The probability of producing a short plant is 25%.

Tags

NGSS.HS-LS3-3

Front

What is the definition of a genotype?

Back

A genotype is the genetic makeup of an organism, represented by the alleles it possesses.

Tags

NGSS.HS-LS1-1

Front

What is the definition of a phenotype?

Back

A phenotype is the observable physical or biochemical characteristics of an organism, determined by its genotype.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their traits even when only one copy is present, while recessive alleles require two copies to express their traits.

Front

What is a Punnett square used for?

Back

A Punnett square is used to predict the genotypes and phenotypes of offspring from a genetic cross.

Front

What does it mean for an allele to be dominant?

Back

An allele is dominant if it masks the effect of a recessive allele when both are present in a heterozygous genotype.