TEST: GENETICS: GOD'S PLAN FOR INHERITANCE

1.hybrid 2.dominant "pure breed" 3.recessive alleles 4.phenotype ratio

1.Bb 2.BB 3.bb 4.3:1

monohybrid

A cross between plants which differ in only one trait is a ______ cross.

gamete

A male or female reproductive cell is called a

gametes

All cells within an organism will have the same number of chromosomes except the

autosomes

All paired chromosomes which are similar within an organism, except the sex chromosomes, are called _____.

true

As the sample size gets larger, the ratio of the results obtained approaches the theoretical prediction.

a0 - R a1 - r a2 - R a3 - RR a4 - Rr a5 - r a6 - Rr a7 - rr

Diagram the genotypes of the P1 monohybrid, which produce round seeds to wrinkled seeds in the ratio of 3:1. Rounds seeds are dominate. Use the letters R and r to denote genotypes. Fill in the blanks to complete the Punnet square.

true

Genetic information is passed from parent to offspring in the form of DNA molecules.

False

Heterozygous genes will always display the recessive trait.

false

If the parent genotypes are Aa and Aa, only two possible genotypes are among the offspring.

X bX b X bY

Mark the genotypes which express hemophilia.

haploid

Meiosis is a type of cell division that produces gamete cells with a _____ number of chromosomes.

all the cells of an organism except the gametes

Somatic cells include:

Rr only

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3:1. If the allele are designated (R & r) receptively. What is the probable genotypes of the round seeds which produced F1?

paired nitrogen bases

The "steps" of the DNA ladder are made of:

codominance

The blood type AB is an example of

multiple alleles

The condition whereby a trait is determined by three or more alleles is called

a paired combination of genes

The genotype represents:

1.thymine 2.guanine

The nitrogen base pairs in the DNA molecule are:

True

Twenty-three is the haploid number of chromosomes in man.

3/4 dominant and 1/4 recessive

What will be the results in the F2 generation after a monohybrid cross?

the sample must have a high probability of representing the population

When using data from population genetics research:

to control the crossing of the traits

Why did Mendel prevent his plants from self-pollinating?

because they did not receive the recessive gene (X b) from their mother.

Why didn't the two sons of Queen Victoria (Alfred and Arthur) display hemophilia?