Life Science FCAT review #1

The gene for curled ears is (C) is dominate over the gene for straight ears (c). This image shows a cat with curled ears (Cc) and a cat with straight ears (cc). What percentage of offspring are expected to have curled ears as a result of a cross between the cats shown?

• 100%

• 75%

• 50%

• 25%

Which of these statements is correct according to the diagram?

• Each offspring has 25% probability of inheriting the alleles (PP).

• Each offspring has 25% probability of inheriting the alleles (Pp).

• Each offspring has equal probability of inheriting the alleles (PP and Pp).

• Each offspring is more likely to inherit (pp) than any other combination of alleles.

Tags

NGSS.HS-LS3-3

Gregor Mendel observed that two plants with purple flowers could produce offspring with white flowers and some offspring with purple flowers. Which of these choices did Mendel use to support his result?

• genetic mutations

• environmental conditions

• inherited and acquired traits

• dominate and recessive traits

Having attached or unattached earlobes is an inherited trait. The figure shown is of an attached earlobe and the alleles responsible for this trait. Which statement correctly describes the genotype and phenotype?

• The genotype is the attached earlobe and the phenotype is (e).

• The genotype is (e) and the phenotype is attached earlobe.

• The genotype is the attached earlobe and the phenotype is (ee).

• The genotype is (ee) and the phenotype is attached earlobe.

Each pea plant has a gene that determines seed color. One version of the gene is for green seed color, and another version is for yellow seed color. Which of these choices is another word for the two versions of the gene for seed color?

• allele

• genotype

• phenotype

• trait

Indicate whether TT is heterozygous or homozygous.

• heterozygous

• homozygous

Indicate whether Bb is heterozygous or homozygous.

• heterozygous

• homozygous

Indicate whether bb is heterozygous or homozygous.

• heterozygous

• homozygous

Determine the phenotype for each genotype using SpongeBob's characteristics. Yellow body is dominate over blue. What would the phenotype for YY be?

• Blue

• Yellow

Determine the phenotype for each genotype using SpongeBob's characteristics. Yellow body is dominate over blue. What would the phenotype for Yy be?

• Blue

• Yellow

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4