Genetics And Punnett Squares Quiz (3)
10 Questions
| Total Attempts: 4138
Our lesson is on punnett squares. You have learned about dominant and recessive traits and modes of inheritance.
Questions and Answers
- 1.A heterozygous tall pea plant is crossed with a short plant. Tall (T) is dominant to short (t) plants. The probability that the offspring plant will be tall is:
- A.
75%
- B.
25%
- C.
50%
- D.
100%
- 2.Brown (B) is dominant over white (b) in foxes. A homozygous brown fox is crossed with a white fox. The probability that the fox offspring will be white?
- A.
0
- B.
25
- C.
50
- D.
100
- 3.A cross of a white chick (WW) with a black chick (BB) produces all speckled offspring (WB) This type of inhetitance is known as:
- A.
Incomplete dominance
- B.
Polygenic inheritance
- C.
Codominance
- D.
Multiple alleles
- 4.What plants have Homozygous genotypes?
- A.
TT only
- B.
Tt
- C.
Both TT and tt
- D.
Tt only
- 5.If you cross a red plant with a white plant and the offspring is pink, what is that called?
- A.
Incompete dominance
- B.
Polygenic inheritance
- C.
Codominance
- D.
Multiple alleles
- 6.In cats, yellow fur is dominant over white fur. A heterozygous cat is mated with a white cat. The genotypes of offspring that could occur are:
- A.
YY and Yy
- B.
Yy
- C.
Yy and yy
- D.
YY, Yy, and yy
- 7.Which of the following means having more than 2 versions of alleles for genes?
- A.
Polygenic inheritence
- B.
Multiple alleles
- C.
Incomplete dominance
- D.
Codominance
- 8.Organisms that have two identical alleles for a particular trait are said to be
- A.
Homozygous
- B.
Dominant
- C.
Hybrid
- D.
Heterozygous
- 9.Blood is determined by individual combinations of the following gene varieties.IA,IB,and i . When IA and IB exist together, they make blood type AB (which has 2 dominant genes). This shows us that blood type is an example of.
- A.
Polygenic Traits
- B.
Multiple Alleles
- C.
Incomplete Dominance
- D.
Co-Dominance
- 10.
This pedigree shows the inheritance of a trait thorugh generations. The trait described here is known as:- A.
Polygenic traits
- B.
Multiple alleles
- C.
Incomplete domninance
- D.
Codominance
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Sample QuestionA heterozygous tall pea plant is crossed with a short plant. Tall (T)is dominant to short (t) plants. The probability that the offspring plant will be tall is: