Dr. Richard Genetics Quizizz

A human being has a somatic cell that has 46 chromosomes. What is the haploid number found in a gamete? A. 23 B. 46 C. 69 D. 92

A. 23

Diploid Cells are represented by A. 2n B. n C. 4n D. 1/2 n

A. 2n

The products of meiosis are genetically... A. Different B. Identical

A. Different

The trait that always shows. A. Dominant B. Recessive C. Hidden D. Overt

A. Dominant

The study of heredity A. Genetics B. Genome C. Allele D. Punnett Square

A. Genetics

The letter symbols for both homologous alleles. BB Bb bb AA Aa aa. A. Genotype B. Phenotype C. Recessive D. Dominant

A. Genotype

The ratio of homozygous dominant to heterozygous to homozygous recessive offspring A. Genotypic Ratio B. Phenotypic Ratio C. Monohybrid Cross D. Homologous Pair

A. Genotypic Ratio

Green peas are dominant (G) to yellow peas (g). What is the genotype for a hetereozygous dominant offspring? A. Gg B. gg C. GG

A. Gg

MEIOSIS PRODUCES 4 CELLS, THEY ARE A. N B. 2N C. 3N

A. N

Referring to the original parents. A. P1 B. F1 C. F2 D. Homozygous

A. P1

The observable traits dictated by the genotype A. Phenotype B. Genotype C. Homozygous Recessive D. Homozygous Dominant

A. Phenotype

The ratio of phenotypes in a Punnett Square A. Phenotypic Ratio B. Genotypic Ratio C. Dihybrid Cross D. Independent Assortment

A. Phenotypic Ratio

The chance that a genotype or phenotype will actually occur in offspring. A. Probability B. Phenotype C. Genotype D. Homozygous Recessive

A. Probability

Identify a purpose of meiosis. A. Produce gametes for reproduction & reduce the chromosome number. B. Repair damaged or dead cells & growth of organisms from birth to adulthood.

A. Produce gametes for reproduction & reduce the chromosome number.

Round (R) seeds are dominant to wrinkled (r) seeds.What is the genotype for a homozygous dominant offspring? A. RR B. Rr C. rr

A. RR

FERTILIZATION OCCURS WHEN A. THE SPERM UNITES WITH THE EGG B. THE SPERM UNDERGO MEIOSIS C. THE EGG UNDERGOES MEIOSIS D. THE EGG AND SPERM UNDERGOES MEIOSIS

A. THE SPERM UNITES WITH THE EGG

Which of the following best describes a GENOTYPE? A. The allele/genetic makeup of an organism. B. The physical expression of a trait.

A. The allele/genetic makeup of an organism.

Which of the following cells is a gamete? A. egg B. bone C. heart D. muscle

A. egg

Chromosomes that carry genes that code for the same products, such as hemoglobin or eye pigment, are said to be: A. homologous B. heterozygous C. heterogeneous D. homozygous

A. homologous

The dominant trait in this punnett square is A. yellow pea seeds B. green pea seeds C. there is no dominant seed

A. yellow pea seeds

NORMAL HUMANS HAVE 46 CHROMOSOMES, HOW MANY WILL THE GERM CELLS HAVE AFTER MEIOSIS? A. 46 B. 23 C. 12 D. 92

B. 23

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed? A. 0 % B. 25% C. 50% D. 75%

B. 25%

If a trait is heterozygous, the letters (alleles)are A. The same B. Different

B. Different

The instruction of one allele covers up the instruction of the other allele in a homologous pair. Symbolized by a capital letter. A. Recessive Allele B. Dominant Allele C. Heredity D. Trait

B. Dominant Allele

MEIOSIS PRODUCES 4 CELLS-THE CHROMOSOME NUMBER IS ... A. DIPLOID B. HAPLOID

B. HAPLOID

A genotype where only dominant alleles were passed on from both parents for one trait - BB AA TT LL A. Homozygous Recessive B. Homozygous Dominant C. Dihybrid D. Heredity

B. Homozygous Dominant

During meiosis and gamete formation, homologous (paired up) alleles split up A. Phenotype B. Law of Segregation .C. Genotype D. Dihybrid Cross

B. Law of Segregation

The hidden trait. You need two of these alleles for the trait to show. A. Dominant B. Recessive C. Hidden D. Overt

B. Recessive

The letters on the TOP AND SIDE of a punnett square represent ______________. A. The combination of alleles in offspring. B. The possible alleles given by the parents following meiosis. C. The genotype and phenotype of offspring. D. The results of genetic mutations in offspring.

B. The possible alleles given by the parents following meiosis.

Why do we need meiosis? A. To double the number of chromosomes going into sex cells B. To halve the number of chromosomes going into sex cells C. triple the number of chromosomes going into sex cells D. To not change the number of chromosomes going into sex cells

B. To halve the number of chromosomes going into sex cells

In Mendel's pea plants, the homozygous recessive phenotype was white flowers. If Mendel crossed two homozygous recessive pea plants, what color flowers would be seen in the offspring? A. white and purple B. white C. purple D. lavendar

B. white

What is the percentage of homozygous recessive offspring? A. 0% B. 25% C. 50% D. 75%

C. 50%

A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells? A. 20 B. 40 C. 80 D. 160

C. 80

First Filial (child) Generation: the offspring of P1 A. P1 B. F2 C. F1 D. Heterozygous

C. F1

Second Filial Generation: the offspring of F1 A. P1 B. F1 C. F2 D. Homozygous Recessive

C. F2

Passing on traits from parents to offspring A. Chromosome B. Genotype C. Heredity D. Allele

C. Heredity

A genotype where only recessive alleles were passed on from both parents for one trait - bb aa tt ll A. Heredity B. Homozygous Dominant C. Homozygous Recessive D. Phenotype

C. Homozygous Recessive

The genetic cross between two parents for one trait: Example BB x bb B = dominant for brown b = recessive for blue A. Incomplete Dominance B. Dihybrid Cross C. Monohybrid Cross D. Iron Cross

C. Monohybrid Cross

The instructions of this allele are covered up by the other allele in a homologous pair. Symbolized by a small letter. A. Homozygous B. Dominant C. Recessive D. Genetics

C. Recessive

D = dimples d = no dimplesWhat is the genotype for a homozygous recessive offspring? A. DD B. Dd C. dd

C. dd

Tt is- A. homozygous dominant B. homozygous recessive C. heterozygous D. none of these

C. heterozygous

The chromosomes that pair up during meiosis, are called __________ chromosomes. A. homozygous B. asexual C. homologous D. genes

C. homologous

What do you call the physical expression of a gene? A. genotype B. dominant C. phenotype D. allele

C. phenotype

Dominant alleles are represented by a(n) A. phenotype B. lower case letter C. upper case letter D. punnett square

C. upper case letter

What is the percentage of a homozyogus dominant offspring? A. 75% B. 50% C. 25% D. 0%

D. 0%

WHAT TYPE OF CELLS STORE THE GENETIC INFORMATION THAT IS PASSED TO OFF-SPRING A. BODY CELLS B. EGG C. SPERM D. EGG AND SPERM

D. EGG AND SPERM

Which of the following is a heterozygous dominant genotype? A. GG B. gg C. ggg D. Gg

D. Gg

Compared to the number of chromosomes contained in a body cell, how many chromosomes would normally be contained in a gamete? A. The same number B. One-fourth as many C. Twice as many D. Half as many

D. Half as many

A genotype where one dominant and one recessive allele was passed on from both parents for one trait. Bb Aa Tt Ll. A. Allele B. Homozygous Dominant C. Homozygous Recessive D. Heterozygous

D. Heterozygous

During meiosis, the homologous pairs of chromosomes and the matching alleles are lined up independently. Offspring are a mix of maternal genes and paternal genes. This increases genetic variation. A. Homozygous Dominant B. Law of Segregation C. Crossing Over D. Independent Assortment

D. Independent Assortment

The Italian monk/scientist who first showed the principles of genetics A. Watson and Crick B. Linnaeus C. Darwin D. Mendel

D. Mendel

Each parent contributes one of the genes for a particular trait. The genes of the pair are called: A. variables B. gametes C. hybrids D. alleles

D. alleles

If green is dominant over purple, then what is the genotype for this individual? A. Purple B. Green C. GG D. gg

D. gg

True or False:A heterozygous dominant trait can be written as BB.

False

TRUE OR FALSE - 1N AND N MEAN THE SAME THING (LIKE MATH)

True