Copy of Heredity, Reproduction, and Punnett Square Check (2/9/2024) (5/28/2024)

Posljednje ažuriranje about 2 years ago

Directions: Black is the DOMINANT fur color for rabbits and white is the recessive. B stands for the black allele and b represents the white allele. A white rabbit would have a genotype of bb and a black rabbit could have a genotype of BB or Bb.

Copy of Heredity, Reproduction, and Punnett Square Check (2/9/2024) (5/28/2024)

Posljednje ažuriranje about 2 years ago

Heredity, Reproduction, and Punnett Square Check

Complete the following questions. Use your notes if you need assistance. You can submit this as many times as you need, but it must be done within the class period.

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Who was Gregor Mendel?

He was a monk who first used probability to explain inheritance in pea plants

He is well known for his experiments on tomato plants.

He is known as the father of modern archaeology.

Which of the following is not true about Meiosis

It involves one diploid cell forming four egg or sperm cells

It involves crossing over between chromosomes which makes independent assortment of alleles possible

It can happen to most of the cells in our body

It makes sexual reproduction possible

It allows bacteria to reproduce asexually.

Select ALL of the follwoing that are true about Sexual Reproduction.

offspring are unique and look different from parents

offspring is produced by only ONE parent

specific forms include budding, fragmentation, and binary fission

offspring is produced by TWO parents genetically combining

fish, amphibians, and mammals can reproduce this way

it is more time intensive

bacteria, yeast, hydra, and flatworms can reproduce this way

genetic variation from the parent can also come from mutations in the DNA of the offspring

Which of the following are true about Mitosis

It involves one diploid cell forming two identical diploid cells

It happens most quickly to our skin cells and the lining of our digestive tract

It results in one diploid cell forming four egg or sperm cells

It allows bacteria to reproduce Asexually

Select ALL of the following that are true about Asexual Reproduction.

bacteria, yeast, hydra, and flatworms can reproduce this way

genetic variation from the parent mostly comes from mutations in the DNA of the offspring

organisms who reproduce this way can reproduce in as little as 20 minutes

specific forms include budding, fragmentation, and binary fission

fish, amphibians, and mammals can reproduce this way

offspring are identical to their parents

offspring is produced by only ONE parent

offspring is produced by TWO parents genetically combining

Match the following terms with their description

Stavka koja se može prevući		Odgovarajuća stavka
diploid		examples are eggs and sperm
pigment		describes most cells in our bodies, having two pairs of each chromosome
embryo		the cell formed when a sperm fertilizes an egg
gametes		the growing mass of cells as a zygote increases in size through mitosis
zygote		substance like chlorophyll or melanin that can absorb some colors of light

What is a trait?

an inherited physical characteristics passed from parent to offspring.

the passing of traits from parents to offspring

a piece of DNA that controls the development of one or more traits

a different form of a gene

What is Heredity?

a piece of DNA that controls the development of one or more traits

a different form of a gene

the passing of traits from parents to offspring

a characteristic of an organism

What is a gene?

a different form of a gene

the passing of traits from parents to offspring

a characteristic of an organism

a section of DNA that controls the development of one or more traits

What is an Allele?

a piece of DNA that controls the development of one or more traits

a characteristic of an organism

a different form or version of a gene

the passing of traits from parents to offspring

TRUE OR FALSE: You get one allele for a trait from you mom, and one from you dad.

Tačno

Netačno

TRUE OR FALSE: Recessive alleles will only express a trait when there are NO dominant alleles.

Tačno

Netačno

Fill in the blank: _________________ Alleles - An allele that covers another allele.

dominant

recessive

homozygous

heterozygous

Fill in the blank: ______________________ Alleles - An allele that is covered, or hidden by another allele.

dominant

recessive

homozygous

heterozygous

Which TWO of the following are correct?

an upper case letter = the recessive allele

an upper case letter = the dominant allele

a lower case letter = the recessive allele

a lower case letter = the domanint allele

Which of the following is the correct defintion of Genotype?

an organisms genetic makeup – the combination of alleles

a type of chromosome

an organisms outward appearance or behavior

the number of genes an organism contains

Which of the following is the correct defintion of Phenotype?

an organisms genetic makeup – the combination of alleles

an organisms outward appearance or behavior

the number of genes an organism contains

a type of chromosome

Select ALL the following that are examples of a Genotype.

Select ALL the following that are examples of a Phenotype.

Select ALL the following staments that are true.

If the two alleles are different, its Genotype is homozygous

If the two alleles are the same, its Genotype is heterozygous

If the two alleles are the same, its Genotype is homozygous

If the two alleles are different, its Genotype is heterozygous

What is a punnett square?

A model used to show the cross of true-breeding pea plants.

A model used to determine exact genotypes of offspring.

A model used to predict possible genotypes of offspring.

None of the choices are correct.

A heterozygous tall (Tt) pea plant with a heterozygous tall (Tt) pea plant were crossed. Note: tt indicates a short plant. The punnet square is below. What are the correct ratios and percentages of the offspring's genotypes?

TT= 1/2= 50%, Tt= 1/2= 50%, tt= 1/4= 25%

TT= 1/4= 25%, Tt= 1/2= 50%, tt= 1/4= 25%

Tt= 1/2= 50%, tt= 1/2= 50%

Tt= 1/2= 75%, tt= 1/4= 25%

A heterozygous tall (Tt) pea plant with a heterozygous tall (Tt) pea plant were crossed. Note: tt indicates a short plant. The punnet square is below. What are the correct ratios and percentages of the offspring's phenotypes?

Tall= 1/2= 50% , Short= 1/2= 50%

Tall= 3/4= 75% , Short= 1/4= 25%

Tall= 1/4= 25% , Short= 3/4= 75%

Tall= 4/4= 100%

Which of the following is true about Melanin

It is produced by Melanocytes.

It protects our DNA from mutations causing ultraviolet radiation.

It limits the light entering our eyes through our pupils

It is regulated by more than one gene

List eye colors from the greatest to least amount of Melanin in the iris

Blue
Hazel
Brown
Green

Down's Syndrome is a chromosomal disorder resulting from nondisjunction of the 21st chromosome and is equally common among those of any race or genetic background.

Tačno

Netačno