STARR/EOC Review (12:37-27:19)

Two heterozgyous tall pea plants are crossed. What is the expected phenotypic outcome for the offspring?

• 100% tall

• 50% tall, 50% short

• 75% tall, 25% short

• 100% short

Answer explanation

When two heterozygous tall pea plants are crossed, the expected phenotypic outcome for the offspring is 75% tall and 25% short due to the 3:1 phenotypic ratio predicted by Mendel's laws of inheritance.

Tags

NGSS.MS-LS3-2

In guinea pigs, the allele for short hair is dominant. If all the guinea pigs are born short haired what are the possible genotypes of the parents? (There are two possible combinations.)

• Ss + Ss

• SS + SS

• SS + Ss

• ss + ss

Answer explanation

The possible genotypes of the parents for all short-haired guinea pigs are SS + Ss and SS + SS, as short hair is dominant and all offspring are short haired.

Tags

NGSS.HS-LS3-1

DNA molecule segment is : TTA-CGC-AAG

The mutated DNA segment is TTC-GCA-AG.

This is an example of ___ mutation.

• Substitution

• Deletion

• Insertion

• Inversion

Tags

NGSS.MS-LS3-1

Original DNA: CAT GAT CCA

New DNA: CAT TGA TCC A

What mutation occurred?

• deletion

• substitution

• tranverse

• insertion

Tags

NGSS.MS-LS3-1

What is the outcome of DNA transcription and translation?

• Make muscles

• Make protein

• Make cells

• Make DNA

Tags

NGSS.HS-LS1-1

Which amino acid will be added to a protein chain if the codon is UAA?

• Ser

• Lys

• Ala

• STOP

Tags

NGSS.MS-LS3-1

What is the longest stage of the cell cycle called?

• Cytokinesis

• M phase

• Interphase

• G1 Phase

During what phase of the cell cycle is DNA replicated?

• G1 phase

• S phase

• G2 phase

• M phase

A sequence of a DNA template strand is shown.

3' TCC AAT GGC TTA TTT 5'

Which of these is the correct amino acid chain produced from the DNA template strand?

• Arginine, Leucine, Proline, Asparagine

• Tryptophan, Phenylalanine, Leucine

• Serince, Leucine, Proline, Asparagine

• Tryptophan, Phenylalanine, Leucine, Glycine

Tags

NGSS.MS-LS3-1

Which RNA bases would pair with TACGAA in transcription? 

• AUGCUU
• ATGCTT
• GCATCC
• GCAUCC