Bsc1005 BIO Chapter 7 2024/2025 Exam
Questions and Answers 100%
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Put the potential offspring genotypes in order from highest expected
frequency to lowest expected frequency for a cross in which both parents
have the RrTt genotype.
a. RrTt rrTt RRtt
b. RrTt RRtt rrTt
c. rrTt RRtt RrTt - 🧠ANSWER ✔✔a
Which of the following describe conclusions drawn by Gregor Mendel?
a. Dominant traits are capable of masking the phenotype of recessive traits.
b. An organism's phenotype is determined by genes located on
chromosomes.
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,c. The alleles responsible for a trait are separated and passed down to the
following generation.
d. Some traits are complex and controlled by many different genes. -
🧠ANSWER ✔✔a, c
Two people of medium skin tone have five children, each with a different
skin tone ranging from very pale to very dark. Most of the children's skin
becomes a little bit darker after exposure to the sun. Judging from this
information, skin tone is probably what?
a. influenced by the environment
b. a pleiotropic trait
c. a Mendelian trait
d. a polygenic trait - 🧠ANSWER ✔✔a, d
In Labrador dogs, coat color is controlled by the genotypes of two genes. In
one gene, the dominant allele, B, produces black fur, and the recessive
allele, b, produces brown fur. However, if a second gene possesses two
recessive alleles, ee, the dog produces yellow fur, regardless of the
genotype of the first gene. If two dogs that are heterozygous for both
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, genes, BbEe mated, what would be the frequency of the three phenotypes,
black, brown, and yellow? - 🧠ANSWER ✔✔yellow: 4/16
black: 9/16
brown: 3/16
BIO cpt2,5 - 🧠ANSWER ✔✔starred
Tess's sister is known to carry an allele for a single-gene recessive genetic
disorder that is fatal in very early life. Tess's mother was tested for the
allele and found not to carry it. What are the odds that Tess is a carrier for
the allele? - 🧠ANSWER ✔✔Since the alleles that are passed on are
random, Tess has a 1/2 (or 50%) chance of carrying the allele.
In pea plants, height is controlled by a single gene and the tall allele (T) is
dominant to the short allele (t). You find a tall pea plant in your yard and
cross it with a short pea plant. It gives rise to 43 tall offspring and 35 short
offspring. What is the genotype of the tall parent plant?
a. tt
b. TT
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STATEMENT. ALL RIGHTS RESERVED
Questions and Answers 100%
Guaranteed Success | Already Rated A+
Put the potential offspring genotypes in order from highest expected
frequency to lowest expected frequency for a cross in which both parents
have the RrTt genotype.
a. RrTt rrTt RRtt
b. RrTt RRtt rrTt
c. rrTt RRtt RrTt - 🧠ANSWER ✔✔a
Which of the following describe conclusions drawn by Gregor Mendel?
a. Dominant traits are capable of masking the phenotype of recessive traits.
b. An organism's phenotype is determined by genes located on
chromosomes.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
,c. The alleles responsible for a trait are separated and passed down to the
following generation.
d. Some traits are complex and controlled by many different genes. -
🧠ANSWER ✔✔a, c
Two people of medium skin tone have five children, each with a different
skin tone ranging from very pale to very dark. Most of the children's skin
becomes a little bit darker after exposure to the sun. Judging from this
information, skin tone is probably what?
a. influenced by the environment
b. a pleiotropic trait
c. a Mendelian trait
d. a polygenic trait - 🧠ANSWER ✔✔a, d
In Labrador dogs, coat color is controlled by the genotypes of two genes. In
one gene, the dominant allele, B, produces black fur, and the recessive
allele, b, produces brown fur. However, if a second gene possesses two
recessive alleles, ee, the dog produces yellow fur, regardless of the
genotype of the first gene. If two dogs that are heterozygous for both
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
, genes, BbEe mated, what would be the frequency of the three phenotypes,
black, brown, and yellow? - 🧠ANSWER ✔✔yellow: 4/16
black: 9/16
brown: 3/16
BIO cpt2,5 - 🧠ANSWER ✔✔starred
Tess's sister is known to carry an allele for a single-gene recessive genetic
disorder that is fatal in very early life. Tess's mother was tested for the
allele and found not to carry it. What are the odds that Tess is a carrier for
the allele? - 🧠ANSWER ✔✔Since the alleles that are passed on are
random, Tess has a 1/2 (or 50%) chance of carrying the allele.
In pea plants, height is controlled by a single gene and the tall allele (T) is
dominant to the short allele (t). You find a tall pea plant in your yard and
cross it with a short pea plant. It gives rise to 43 tall offspring and 35 short
offspring. What is the genotype of the tall parent plant?
a. tt
b. TT
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
