Genetic Crosses

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

Tags

NGSS.HS-LS3-1

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Tags

NGSS.HS-LS3-1

Which of the following genotypes is homozygous dominant?

• A
• Aa
• AA
• aa

Tags

NGSS.HS-LS3-1

Long tongues (T) are dominant to short tongues (t) in green tree frogs. What is the probability that two frogs that are heterozygous (Tt) for long tongues could produce offspring with short tongues?

• 100%

• 75%

• 50%

• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In watermelons, green rinds (G) are dominant to striped rinds (g).  What is the genotype of a heterozygous green watermelon?

• GG
• Gg
• gg
• green

Tags

NGSS.HS-LS3-1

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

The passing of genetic traits from parent to offspring is known as

• heredity

• trait

• gene

• allele

Tags

NGSS.HS-LS3-1

A dog gives birth to 5 puppies. What percentage of the chromosomes does each puppy share with the mother?

• 25%
• 50%
• 75%
• 100%

Tags

NGSS.HS-LS3-1

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt
• Tt
• Bb
• TT

Tags

NGSS.HS-LS3-1

Heterozygous is when...

• the alleles are the same
• the alleles are different
• the alleles are absent
• the alleles are present

Tags

NGSS.HS-LS3-2