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Terms in this set (42)
During prophase, _________.
the mitotic spindle begins to form.
Complete the Punnett Square for Seed Coat Texture. Read the directions carefully.
Describe the genotype and phenotype for the parents and offspring. Use the information below to complete the questions.
Type your answers in the short answer text box by writing the letter from the punnett square and the genotype and phenotyperepresented.
(Example: a. Rr, pink)
Punnett Square: SEED COAT TEXTURE
Hairy seed coat is dominant (H)
Smooth seed coat is recessive (h)
a. Father is homozygous recessive
b. Mother is heterozygous
c., d., e., f. potential offspring
a. hh, smooth
b. Hh, hairy
c. Hh, hairy
d. Hh, hairy
e. hh, smooth
f. hh, smooth
Plant photosystems are located in ________.
Crossing over during prophase I (meiosis) contributes to ________.
A P generation plant that produces yellow seeds is crossed with a P generation plant that produces green seeds. The F1 plants have yellow seeds. What is the expected phenotypic ratio of seed color of the offspring of an F1 × F1 cross?
In human sexual reproduction, ________.
haploid sperm fertilizes a haploid egg cell.
Which cross will produce only heterozygous offspring?
AA × aa
In humans, the presence or absence of dimples is a trait controlled by a single gene. What is the genotype of an individual who is heterozygous for dimples?
What is the chromosome composition of a normal human male?
44 autosomes, XY
What are the cells with 39 chromosomes each called?
Which characteristic seen in prophase I does NOT occur in prophase II (meiosis)?
crossing over occurs.
By what process are the cells with 39 chromosomes each produced?
You are diagnosed with a tumor. The doctor tells you it is benign. Based on your knowledge from biology class, you know that __________________.
the tumor is the result of a failure in the cell cycle control system.
If organisms reproduced sexually, but without meiosis, what would result?
The chromosome number would double each generation.
Which process is found in both cellular respiration and in the light reactions of photosynthesis?
electron transport chain
In what part of the cell cycle would there be twice as many chromatids when compared to the original cell's chromosomes?
Family trees used to trace the inheritance of human genes
Offspring of the P Generation
An organism that has two identical alleles for a gene
Parent organisms that are mated
When two alleles of a pair differ, the one that determines appearance
E. F1 Generation
B. P Generation
Genetic variation is accomplished by all but one of the following. Choose the EXCEPTION.
the events of meiosis II
What is the function of stomata?
In photosynthesis, a H+ ion (proton) gradient forms across the ________.
What is the specific location of a gene on a chromosome?
What is NOT correct about the cell labeled #52?
It is haploid.
Eukaryotic cells have their chromosomes packaged in the ________.
When a pigment molecule absorbs a photon, one of its electrons is raised to the ________ state.
Cytokinesis typically begins during the ________ stage of mitosis.
Mendel's Law of independent assortment states that each pair of alleles segregates independently of the other of pairs of alleles during gamete formation. Which statement about Meiosis supports this idea?
random alignment of homologous chromosome pairs.
Mendel developed four hypotheses (postulates). Which answer best summarizes these concepts?
Alternative versions of genes influence phenotype and genotype
Achondroplasia is a form of dwarfism. Which of the following is NOT true about this disorder.
This disorder is caused by a recessive allele.
The final results of meiosis are _________.
4 genetically distinct haploid cells.
Which of these is NOT correct about the 4 pairs of letters inside the box (RR, Rr, Rr, rr)?
They represent the P generation.
During interphase, __________.
chromosome duplication occurs.
During telophase, ________.
The sex chromosomes of a male are ______ and the sex chromosomes of a female are _______.
During anaphase I (Meiosis I), ________.
homologous pairs of chromosomes separate.
The table below compares mitosis and meiosis. Which row on the table (A, B, C, or D) is NOT correct?
A ________ is an autotroph.
An individual that is homozygous ________.
carries two of the same allele for a gene
What are the 2 major phases of the cell cycle?
Interphase and Mitotic Phase
The products of the light dependent reactions of photosynthesis are ________.
ATP and NADPH
A duplicated chromosome consists of two ________.
Gregor Mendel is often called the _____________.
Father of Genetics
The rate of photosynthesis in an aquatic plant can be determined by the number of bubbles released from the plant. What are these bubbles?
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