Bio 130 – Quiz March 28
Q. 1 - Imagine crossing a pea heterozygous at the loci for
flower color (white versus purple) and seed color (yellow
versus green) with a second pea homozygous for flower color
(white) and seed color (yellow).
What types of gametes will the first pea produce?
A. two gamete types: white/white and purple/purple
B. two gamete types: white/yellow and purple/green
C. four gamete types: white/yellow, white/green,
purple/yellow, purple/green
D. four gamete types: white/purple, yellow/green,
white/white, and purple/purple
E. one gamete type: white/purple/yellow/green
Q. 2 - A cross between homozygous purple-flowered and
homozygous white-flowered pea plants results in
offspring with purple flowers. This demonstrates
A.
B.
C.
D.
E.
the blending model of genetics.
true-breeding.
dominance.
a dihybrid cross.
the mistakes made by Mendel.
Q. 3 – In dachsunds Brown hair (B) is dominant to
yellow hair (b). Curly hair (C) is dominant to straight
hair (c). We mate a female BBcc with a male bbCC.
What is the chance of a puppy with yellow curly hair?
A.
B.
C.
D.
E.
0
1/4
1/8
3/8
3/16
Q. 4 – In dachsunds Brown hair (B) is dominant to
yellow hair (b). Curly hair (C) is dominant to straight
hair (c). We mate a female BbCc with a male bbCC.
What is the chance of a puppy with yellow curly hair?
A.
B.
C.
D.
E.
½
¼
1/8
3/8
1/16