A) Only 10 percent of the energy stored in an organism can be passed on to the next trophic
level. Of the remaining energy, some is used for the organism’s life processes, and the rest is
(1 point)
eliminated as heat
stored as body tissue
used in reproduction
stored as fat
11 answers
eliminated as heat
A) Two populations of mice living in the same forest are separated by a large river. After a
rainstorm, severe flooding brings several mice from one population to the other population.
When the mice from the first population reproduce with members of the second population,
which of the following will likely occur? (1 point)
The offspring will be forced to leave the second population.
The offspring in the second population will have greater genetic variety
All the offspring will die as a result of reproductive mutations.
The offspring will be genetically identical to its parent from the first population
rainstorm, severe flooding brings several mice from one population to the other population.
When the mice from the first population reproduce with members of the second population,
which of the following will likely occur? (1 point)
The offspring will be forced to leave the second population.
The offspring in the second population will have greater genetic variety
All the offspring will die as a result of reproductive mutations.
The offspring will be genetically identical to its parent from the first population
The offspring in the second population will have greater genetic variety
A) Complete the statement using the word bank provided. (1 point)
Meiosis creates
two genetically different somatic cells four genetically identical gametes
two genetically identical somatic cells four genetically different gametes
Meiosis creates
two genetically different somatic cells four genetically identical gametes
two genetically identical somatic cells four genetically different gametes
Meiosis creates
four genetically different gametes
four genetically different gametes
A) Hint: Draw a Punnett Square to help you with this question. (1 point)
In a genetics laboratory, a heterozygous tall plant (Tt) is crossed with a homozygous short plant (tt). If tall (T)
is dominant over short (t), what are the expected phenotypic results? Use the pull-down menu to identify the
expected percentages in the table below
Tall Short
0% 0%
25% 25%
50% 50%
75% 75%
100% 100%
In a genetics laboratory, a heterozygous tall plant (Tt) is crossed with a homozygous short plant (tt). If tall (T)
is dominant over short (t), what are the expected phenotypic results? Use the pull-down menu to identify the
expected percentages in the table below
Tall Short
0% 0%
25% 25%
50% 50%
75% 75%
100% 100%
Tall 50%
Short 50%
Short 50%
A) The white cattail is a hybrid species of plant that is a result of the cross between the broadleafed cattail and the narrow-leafed cattail. Over time, the white cattail has established itself in
the wetlands of the Midwestern United States.
Which of the following would best explain the success of the white cattail? (1 point)
Inherited traits passed on from parental generations make hybrid species more susceptible to
disease.
Hybridization produces offspring traits that allow different species to survive in extreme
environments.
Favorable genes from parental generations provide advantageous characteristics to the hybrid
species.
Hybrid species display more adaptations due to their reduced genetic diversity.
the wetlands of the Midwestern United States.
Which of the following would best explain the success of the white cattail? (1 point)
Inherited traits passed on from parental generations make hybrid species more susceptible to
disease.
Hybridization produces offspring traits that allow different species to survive in extreme
environments.
Favorable genes from parental generations provide advantageous characteristics to the hybrid
species.
Hybrid species display more adaptations due to their reduced genetic diversity.
Favorable genes from parental generations provide advantageous characteristics to the hybrid species.
A)
A group of biologists studied the genes of 500 members of a species of freshwater fish called
Mozambique tilapia over five generations. Their results are provided in the table below. Use
this information to answer the following question.
Generation Black tilapia (DD) Bronze tilapia (Dd) Gold tilapia (dd)
0 250 100 150
1 234 243 23
2 307 177 16
3 358 131 11
4 392 104 4
5 429 67 4
Which of the following statements is true?
(1 point)
The frequency of the dominant and recessive alleles decreased
The frequency of the dominant allele increased. The frequency of the recessive allele decreased.
The frequency of the dominant allele decreased. The frequency of the recessive allele increased.
The frequency of the dominant and recessive alleles increased
A group of biologists studied the genes of 500 members of a species of freshwater fish called
Mozambique tilapia over five generations. Their results are provided in the table below. Use
this information to answer the following question.
Generation Black tilapia (DD) Bronze tilapia (Dd) Gold tilapia (dd)
0 250 100 150
1 234 243 23
2 307 177 16
3 358 131 11
4 392 104 4
5 429 67 4
Which of the following statements is true?
(1 point)
The frequency of the dominant and recessive alleles decreased
The frequency of the dominant allele increased. The frequency of the recessive allele decreased.
The frequency of the dominant allele decreased. The frequency of the recessive allele increased.
The frequency of the dominant and recessive alleles increased
The frequency of the dominant allele increased. The frequency of the recessive allele decreased.