Download Single Autosomal Gene Problems: Try 3

Single Autosomal Gene Problems: Try 3!
Single Autosomal Gene Problems: Try 3!
Directions: Solve these problems in your journal. Show
ALL work and circle the answers.
Directions: Solve these problems in your journal. Show
ALL work and circle the answers.
1. In the dog breed known as Alaskan malamutes,
normal height is dominant to dwarfism. (A dwarf
dog looks a bit like a dachsund!) What genotypes
are expected among the progeny of a homozygous
normal Alaskan malamute and a dwarf Alaskan
malamute?
1. In the dog breed known as Alaskan malamutes,
normal height is dominant to dwarfism. (A dwarf
dog looks a bit like a dachsund!) What genotypes
are expected among the progeny of a homozygous
normal Alaskan malamute and a dwarf Alaskan
malamute?
2. In people, the ability to roll the tongue into a
“U” shape is dominant; not being able to roll the
tongue is recessive. Two heterozygous tonguerollers marry! What are the “odds” of their baby
growing up to be a tongue roller, too?
2. In people, the ability to roll the tongue into a
“U” shape is dominant; not being able to roll the
tongue is recessive. Two heterozygous tonguerollers marry! What are the “odds” of their baby
growing up to be a tongue roller, too?
3. Farmer Jones mates a red hen to a red
rooster. (In chickens, red is dominant to white.)
The chicks hatch in the ratio of
3 red : 1 white. What are the
most likely genotypes of the hen
and the rooster?
3. Farmer Jones mates a red hen to a red
rooster. (In chickens, red is dominant to white.)
The chicks hatch in the ratio of
3 red : 1 white. What are the
most likely genotypes of the hen
and the rooster?
Single Autosomal Gene Problems: Try 3!
Single Autosomal Gene Problems: Try 3!
Directions: Solve these problems in your journal. Show
ALL work and circle the answers.
Directions: Solve these problems in your journal. Show
ALL work and circle the answers.
1. In the dog breed known as Alaskan malamutes,
normal height is dominant to dwarfism. (A dwarf
dog looks a bit like a dachsund!) What genotypes
are expected among the progeny of a homozygous
normal Alaskan malamute and a dwarf Alaskan
malamute?
1. In the dog breed known as Alaskan malamutes,
normal height is dominant to dwarfism. (A dwarf
dog looks a bit like a dachsund!) What genotypes
are expected among the progeny of a homozygous
normal Alaskan malamute and a dwarf Alaskan
malamute?
2. In people, the ability to roll the tongue into a
“U” shape is dominant; not being able to roll the
tongue is recessive. Two heterozygous tonguerollers marry! What are the “odds” of their baby
growing up to be a tongue roller, too?
2. In people, the ability to roll the tongue into a
“U” shape is dominant; not being able to roll the
tongue is recessive. Two heterozygous tonguerollers marry! What are the “odds” of their baby
growing up to be a tongue roller, too?
3. Farmer Jones mates a red hen to a red
rooster. (In chickens, red is dominant to white.)
The chicks hatch in the ratio of
3 red : 1 white. What are the
most likely genotypes of the hen
and the rooster?
3. Farmer Jones mates a red hen to a red
rooster. (In chickens, red is dominant to white.)
The chicks hatch in the ratio of
3 red : 1 white. What are the
most likely genotypes of the hen
and the rooster?