bio quizzes

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la jornada

work day

The Hardy

Weinberg equation is used to - predict genotype frequencies in a population.

Which condition would disturb the Hardy

Weinberg equilibrium and cause the gene pool to change? - Several homozygous recessive individuals leave the population.

If a population is in Hardy

Weinberg equilibrium and remains in equilibrium, which of the following will be true? - Individuals survive and reproduce equally well regardless of their genotype.

What variable remains constant, or in equilibrium, in the Hardy

Weinberg model? - genetic variation

According to the ______ model, evolution occurs in spurts; species evolve relatively rapidly and then remain unchanged for long periods.

punctuated equilibrium

el punto de vista

point of view

All the rabbits living in a particular area would be an example of a(n)

population

If an intestinal cell in a grasshopper contains 24 chromosomes, then a grasshopper sperm cell contains ______ chromosomes.

12

A fruit fly somatic cell contains 8 chromosomes. This means that ______ different combinations of chromosomes are possible in its gametes.

16

In a cell containing 10 chromosomes, meiosis results in the formation of daughter cells containing ______ chromosomes.

5

Which of the following are NOT aspects or results of sexual selection?

Hardy-Weinberg equilibrium

Which of the following statements applies to real populations?

Hardy-Weinberg equilibrium is rare.

Which scientist proposed that if an organism used a structure so much that it grew, the trait for that larger structure could be passed to its offspring?

Jean Baptiste Lamarck

In an individual of genotype Aa, where are the A and a alleles physically located?

One allele is on one chromosome, and the other is in the same position (locus) on the homologous chromosome.

Which of the following is a key difference between meiosis and mitosis?

Pairing of homologous chromosomes.

Which is a postzygotic reproductive barrier?

The hybrid offspring of two species of jimsom weeds always die before reproducing.

hacer su sueño realidad

To make one's dream a reality

ganarse dinero por su cuenta

To make your own money

Which of the following indicates Turner syndrome?

XO

Which of the following represents a chromosomally normal human female?

XX

If a version of a gene is dominant, then

a single copy of it will produce its trait.

The evolution of numerous ecologically diverse species from a single ancestor in a relatively short time period, as seen in Darwin's finches, is called

adaptive radiation

Previously, it was thought that the blending hypothesis explained inheritance. The blending hypothesis explained that

after a mating, genes of the two parents are mixed in the offspring and lose their individual identities.

una oferta

an offer

Two animals are considered members of the different biological species if they

are male and female, but cannot interbreed.

The development by scientists to create a new color in a rose is the result of

artificial selection

A difference of chemical scents between two populations is an example of what kind of isolation?

behavioral

los beneficios

benefits

When a horse and a donkey mate, they produce infertile hybrids called mules. According to the ______ species concept, horses and donkeys are ______.

biological; different species

When applied to Mendel's experiments, the term true

breeding means a self-fertilization of two plants that produces - offspring identical to the parent.

la carrera

career

un/una cajero/a

cashier

Microevolution is

changes in the gene pool of a population from one generation to the next.

el campo

countryside

perjudicial

damaging, harmful

Many years of evolution is most likely to produce

differences between species and their ancestors.

Biogeography is the study of the

distribution of organisms around the world.

What is speciation?

divergence of two or more species from an existing one

If an organism has a vestigial structure, that structure likely once had a function in a(n)

early ancestor

el/la ingeniero/a

engineer

un establecimiento

establishment

What is suggested by the similarity of early embryos of different species of vertebrates?

evolution from a distant common ancestor

Allopatric speciation is most likely to occur in which of the following scenarios?

fish living in two different spring pools separated by a large expanse of desert

What is the typical result when a diploid cell undergoes meiosis?

four haploid cells

DdEe pea plants can produce ______ type(s) of gametes, but a ddee plant can produce ______ type(s) of gametes.

four; one

Crossing over occurs during

prophase I

Over time, adaptations can lead populations to experience

genetic changes.

Mutations are important because they bring about

genetic variation needed for a population to evolve.

What is the first step in allopatric speciation?

geographic isolation

la contratación

hiring, contracting

During anaphase I,

homologous chromosomes separate and migrate toward opposite poles.

A new species can arise in a single generation

if a change in chromosome number creates a reproductive barrier.

When you cross two heterozygous (Aa), the offspring will most likely be

in the ratio 1:1 homozygous to heterozygous

When we say that an organism is haploid, we mean that

its cells each have one set of chromosomes.

un puesto en el mercado laboral

job/position in the labor market/workforce

Several inherited disorders are much more common in close

knit religious communities, such as the Amish, than in the general population. This is at least partly because - people in such communities are more likely to reproduce with relatives.

los conocimientos y las habilidades

knowledge and skills

laborioso/a

laborious, hard-working

el/la abogado/a

lawyer

What is the term for a change in the relative frequencies of alleles in a population over several generations?

microevolution

The ______ species concept is the most applicable to classifying species from the fossil record.

morphological

Down syndrome can be the result of

nondisjunction of chromosome 21 during meiosis.

For which of the following groups would the biological definition of species be useful?

oaks and other sexually reproducing, extant (currently living) trees

mayor

older

por su cuenta

on his/her own

four principles of natural selection

overproduction, variation, adaptation, descent with modification

un trabajo de medio tiempo

part-time job

una función

performance

Protein sequences in one organism that resemble those of another suggest a

shared ancestry

What evidence for a past evolutionary relationship can be seen in different groups of vertebrates?

similar features in early stages of embryos

In meiosis II,

sister chromatids are separated.

una destreza

skill, ability

An example of a cell that is 2n is a

somatic cell

apto/a

suitable

los meses veraniegos

summer months

Which of the following is an example of a vestigial structure?

the wings of an ostrich

A proposed explanation for a wide range of observations and experimental results that is supported by a wide range of evidence is what we call a

theory

adjuntar

to attach

convertirse

to convert

culminar

to end, to culminate

apetecer

to feel like

seguir un horario

to follow a schedule

involucrarse

to get involved

atender

to help, to assist

solucionar problemas

to solve problems

At the end of telophase I of meiosis, as cytokinesis occurs, there are

two haploid cells

The difference in the physical traits of an individual from those of other individuals in a group is called a(n)

variation.

The remnant of an organ that had a function in an early ancestor is known as a(n)

vestigial structure.


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