AnswersFL-2000310-Biology 1 Sem 1 - FlexCell Homeostasis

Laws of Inheritance Answers

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Parents that are heterozygous for having freckles (dominant) are crossed. Which correctly describes their offspring?

A
Twenty-five percent have freckles.
B
Twenty-five percent are Ff.
C
Seventy-five percent have freckles.
D
Seventy-five percent are Ff.
2
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Which of Mendel's laws or principles explains that traits are passed from parents to offspring individually instead of as pairs, groups, or sets?

A
the principle of dominance
B
the law of independent assortment
C
the law of segregation
D
the principle of genetics
3

Which statement summarizes the law of segregation?

A
Gametes are passed in pairs, groups, or sets.
B
Traits that are dominant mask traits that are recessive.
C
Gametes carry one allele for each trait.
D
Traits are passed independently of one another.
4

Which type of scientific statement is defined as "a possible explanation or answer to a scientific question that is based on prior knowledge or research and is testable"?

A
hypothesis
B
theory
C
law
D
probability
5

A pea plant that has round seeds has the genotype Rr. It is crossed with a pea plant that has wrinkled seeds and the genotype rr. What is the probability that the offspring will have wrinkled seeds?

A
0 percent
B
25 percent
C
50 percent
D
75 percent
6

The diagram represents one of Mendel’s laws or principles of inheritance. Which law or principle shown in the diagram is represented by the F2 generation having one gene from each parent?

Question illustration
A
dominance
B
independent assortment
C
segregation
D
genetics
7

What is a gene?

A
the different forms of a trait
B
a segment of DNA that is the basic unit of heredity
C
the appearance or characteristics that are seen in an organism
D
an organism's allele combination
8

What can be known about Mendel’s five-part hypothesis?

A
It is an answer to a scientific question and is based mostly on his research.
B
It identifies three alleles for each gene.
C
It is an answer to a scientific question and is based on publications on genetics.
D
It identifies one allele for each gene.
9

The concept of evolution by way of natural selection is a central tenet in biology that has been tested in numerous ways by many scientists. Evolution by way of natural selection is most likely which type of concept?

A
an explanation of phenomena that can be accepted as true because it is supported by repeated observations and experimentation
B
a likelihood based on the chance that a particular event will or will not occur during an experiment
C
a testable explanation or answer to a scientific question based on prior knowledge or research
D
a statement of fact that is accepted as true because it has always been observed to be true through observations and experimentation
10

Why did Mendel study pea plants?

A
They reproduce asexually and have one trait that is easy to observe.
B
They reproduce asexually and have many traits that are easy to observe.
C
They reproduce sexually and have one trait that is easy to observe.
D
They reproduce sexually and have many traits that are easy to observe.

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