Genetics Review

Front

How many alleles does a child inherit from each parent for each trait?

Back

1 allele from each parent.

Tags

NGSS.HS-LS3-1

Front

What is the probability of a child having blue eyes if both parents are heterozygous brown-eyed (Bb)?

Back

25% chance of being blue-eyed.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

Front

True or False: The passing of traits from one parent to offspring is called heredity.

Back

True.

Tags

NGSS.HS-LS3-1

Front

What are the phenotype probabilities for the offspring of a homozygous dominant brown mouse crossed with a heterozygous brown mouse?

Back

100% brown.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Front

What is the expected phenotype ratio when crossing two roan cows (BW) that show co-dominance in fur color?

Back

1 Brown: 2 Brown and White: 1 White.

Front

Define allele.

Back

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

Front

What is the difference between homozygous and heterozygous genotypes?

Back

Homozygous has two identical alleles, while heterozygous has two different alleles.

Front

What does it mean for a trait to be recessive?

Back

A recessive trait is expressed only when two recessive alleles are present.

Front

Explain co-dominance in genetics.

Back

Co-dominance occurs when both alleles in a heterozygote are fully expressed, resulting in a phenotype that shows both traits.

Front

What is 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