Copy of 2024 Genetics & Heredity Flashcard

Front

What is the probability of getting heterozygous offspring from a monohybrid cross?

Back

50%.

Front

What explains the difference in physical features between siblings?

Back

Siblings inherit different combinations of alleles from their parents.

Front

What information can a pedigree NOT provide about a person?

Back

The age of the person.

Front

If a homozygous patterned spider is crossed with a plain spider, what percentage of the offspring will be patterned?

Back

100%.

Front

What will happen to the leaf pattern of sunflower plants grown from seeds of a sunflower with chewed leaves?

Back

None of the plants will inherit the chewed leaf pattern.

Front

Define allele.

Back

An allele is a variant form of a gene that can produce different traits.

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 genotype?

Back

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

Front

What is a phenotype?

Back

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

Front

What is a Punnett square used for?

Back

A Punnett square is used to predict the genetic outcomes of a cross between two organisms.