AnswersHVA 26-27 IM Biology ALaws of Inheritance

Lesson 2: Laws of Inheritance Answers

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1
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Why did Mendel study pea plants?

Answer:

Mendel studied pea plants because they reproduced sexually and had traits that were easily observable.

2
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What is the definition for "hypothesis"?

A
a scientific concept that explains what patterns of behavior will be seen through repeated investigations
B
a hypothesis or group of related hypotheses that can be accepted as true based on repeated experimentation with similar results
C
a possible explanation or answer to a scientific question that is based on prior knowledge or research and is testable
3

3. ✔ ryRyRYRy

A
ry
B
Ry
C
RY
D
Ry
4

Before testing the pea plants, Mendel formed a five-part hypothesis. What did Mendel include in his hypothesis? Check all that apply.

A
A pair of factors (known as genes) control traits.
B
One gene comes from each parent for every trait.
C
Each trait is passed from generation to generation.
D
Some traits are passed together from generation to generation.
E
When gametes are formed, genes separate.
F
If there are two unlike genes, one may be seen while the other is hidden.
5

A plant heterozygous for yellow pod color (Yy) is crossed with a plant homozygous for green pod color (yy). Which trait is dominant?

A
green pod color
B
yellow pod color
C
They are both recessive.
6

A plant TT for tall height is crossed with a plant tt for short height. The offspring have the genotype Tt. What is the phenotype of the plant? tall heightshort heightTttt

A
tall height
B
short height
C
Tt
D
tt
7

The law of ⇒ independent assortment states that traits are passed from parents to offspring independently of one another.

Answer:

Mendel

8

The law of ⇒ segregation explains how alleles separate during gamete formation.

Answer:

Mendel

9

A plant contains the alleles Gg for green pod color. It is crossed with a plant that has the alleles gg for yellow pod color. The offspring have green pods. What is the allele combination?ggGgGG

A
gg
B
Gg
C
GG
10

Identify the genotype for each numbered item. 1. X rryyRryy✔ RRYyRrYy

A
rryy
B
Rryy
C
RRYy
D
RrYy
11

Question text not available

Answers:
Selection 1:RRYy
Selection 2:Rryy
Selection 3:ry
12

Identify the phenotype for item 4.wrinkled greensmooth greenwrinkled yellowsmooth yellow

A
wrinkled green
B
smooth green
C
wrinkled yellow
D
smooth yellow
13

If a plant with purple petals (PP) is crossed with a plant with white petals (pp), what is the phenotype for the F1 generation?

A
purple petals
B
white petals
C
a combination of purple and white petals
14

2. rryyRryyRRYyRrYy

A
rryy
B
Rryy
C
RRYy
D
RrYy

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