Genetics

Question 0

An organism is ___________ if both its factors for a particular trait are different.

Answer 0

Hybrid

Question 1

In genetics, a cross is

Answer 1

A test to see how traits are inherited

Question 2

According to Mandel, how many factors are there for each inherited trait?

Answer 2

Two

Question 3

After Mandel published his theories, they were…

Answer 3

Ignored for 35 years

Question 4

If a TT plant is crossed with a TT plant what will the offspring be?

Answer 4

All TT

Question 5

If a purebred brown hamster mates with a purebred white hamster and all the offspring in the first generation are brown, which statement is true of the brown and white traits?
A.brown is dominant, white is recessive
B.white is dominant, brown is recessive
C.these traits are examples of incomplete dominance
D.not enough information is given to decide

Answer 5

A.brown is dominant, white is recessive

Question 6

Suppose that a dogs long hair is dominant and short hair is recessive. If a hybrid long haired dog mates with a purebred short haired dog and 12 puppies are produced, one would expect:
A. All the puppies to have long hair
B. Exactly 6 of the puppies to have long hair
C. Approximately half of the puppies to have long hair
D. All the puppies to have short hair

Answer 6

C. Approximately half of the puppies to have long hair