Why did Gregor Mendel use pea plants for his experiments on heredity?

Pea plants have easily observable traits, produce several generations in a year, and self pollinate.

Peas taste good and are easy to cook.

Pea plants look very lovely in the garden and produce beautiful flowers.

Peas are a good source of vitamin A, vitamin C, folate, thiamine, iron and phosphorus. They are rich in protein, carbohydrates, and fiber and low in fat.

The passing of traits from parent to offspring.

A family tree that shows the relationships between an organism and its ancestors.

A diagram that is used to predict the genotypes of offspring produced by two parents.

A notable feature or characteristic of an organism.

What does Homozygous dominant mean?

That both alleles for a gene are dominant, so the dominant form of the trait will be expressed.

That both alleles for a gene are recessive, so the recessive form of the trait will be expressed.

That one allele is dominant and one is recessive, which mean the dominant trait will be expressed in the offspring.

Why did Mendel choose to work with the garden pea plant?

Because the pea plant is easy to work with.

Because pea plants are fast growing

Because the pea plant has a number of characteristics, each with only two forms

a certain form of a gene that can be recessive or dominant

A dominant allele.....

is expressed in homozygous dominant and heterozygous individuals

is only expressed in homozygous individuals

The parental genotypes ( Gg and gg ) can be described as being--

Heterozygous; homozygous recessive

What is a dominant allele?

A trait that is always shown (capital letter)

A trait that can be hidden (lower case letter)

Which of the following statements best describes Mendel's Law of Segregation?

Each parent only passes one allele for each trait to their offspring.

All offspring inherit the same traits from each parent.

Alleles for each trait blend to create a new trait in offspring.

Traits are passed down unchanged to offspring.

Why are traits sometimes different between parents and offspring?

Traits are randomly chosen from either parent's alleles, which can result in different combinations

Offspring always inherit dominant traits from both parents

Offspring create new alleles not present in their parents

Parents pass down identical traits to all offspring

What did Mendel conclude about the inheritance of traits?

Traits are controlled by factors that exist in pairs

Traits are only inherited from the mother

What did Mendel observe in the F₁ generation when crossed purebred tall plants with purebred short plants?

All of the plants in the F₁ generation were tall.

All the plants in the F₁ generation were short.

3/4 of the plants in the F₁ generation were short and 1/4 were tall.

3/4 of the plants in the F₁ generation were tall and 1/4 were short.

genetics and segregation

Quiz

•

Biology

•

9th Grade

•

Practice Problem

•

Medium

Science Al Arab Al Washm

Used 1+ times

FREE Resource

36 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What does heterozygous mean?

An organism that has the same genes for a trait (TT or tt)

An organism that has different genes for a trait (Tt)

When neither gene is fully dominant; offspring is a mixture of both

the different forms of a trait (hair color--> brown, blonde, red

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A heterozygous yellow pea plant's genotype would be:

YY

yy

Yy

Yg

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

TT,tt,PP,pp,SS,ss are examples of alleles that are?

homozygous

heterozygous

different

homologous

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Heterozygous is when...

the alleles are the same

the alleles are different

the alleles are absent

the alleles are present

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following alleles is homozygous (purebred) recessive?

Tt

tt

TT

t

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following genotypes is homozygous dominant?

A

Aa

AA

aa

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following genotypes is heterozygous?

Bb

BB

bb

B

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genetics and segregation

36 questions

What does heterozygous mean?

A heterozygous yellow pea plant's genotype would be:

TT,tt,PP,pp,SS,ss are examples of alleles that are?

Heterozygous is when...

Which of the following alleles is homozygous (purebred) recessive?

Which of the following genotypes is homozygous dominant?

Which of the following genotypes is heterozygous?

Each parent passes ___ allele to their offspring.

The different forms of a gene are called

How many alleles do we inherit for each gene?

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