Science

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1. A dog is trained to sit and shake hands. These traits are most likely. (1 point)

A. inherited
B. not inherited
C. not acquired
D. innate

2. In a particular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a black bull that is heterozygous for coat color, what percentage of their offspring would you expect to be black? (1 point)

A. 25%
B. 50%
C. 75%
D. 100%

3--

4. What is a mutation?

A. a mutation is a permanent change I the order of the bases of DNA.
B. a mutation is a temporary change in the order of the bases of DNA.
C. a mutation is a permanent change in the way a cell carries out mitosis.
D. a mutation is a temporary change in the way a cell carries out mitosis.

5. In humans, having dimples Is a dominant trait. in order for a child to have dimples (1 point)

6. A scientist is studying a plant species in which the flower color genes are codominant. The scientist crosses a plant with red flowers and a plant with white flowers. The offspring will most likely have
A. red flowers
B. white flowers
C. pink flowers
D. red flowers with white patches

7. In order for a child to inherit a recessive genetic disease, like sickle cell anemia, healthy parents must both
A. have the disease
B. be homozygous for the mutated gene that causes the disease.
C. be carries of the mutated gene that causes the disease
D. have another offspring that have the disease

8. Chromosome pairs contain different versions of genes, which are called __________________. (1 point)

9. The process in which body cells are duplicated in order to grow and repair body tissues is called __________________. (1 point)

10. The process in which the chromosomes in sex cells are reduced by half is called ________________. (1 point)

11. A white mouse is crossed with a black mouse. All the offspring were grey. The genes for fur color in mice show _________________. (1 point)

12. Genes are specific sections of ______________________. (1 point)

13. To pass its traits on to the next generation, an organism must ______________. (1 point)

14. Explain how a mutation in an individual's DNA occurs, and describe the effect it may have on the individual's traits.

15. Explain how sexual reproduction increases genetic diversity in many species of plants and animals, make sure to include the importance and function of gametes.

16. Explain how asexual reproduction occurs and how it limits the spread of harmful characteristics.

My Answers are listed below and Need help 16.
1. B.
2. B.
3. C.
4. A.
5. D.
6. D.
7. C.
8. Alleles
9. Mitosis
10. Meiosis
11. Incomplete Dominance
12. DNA
13. Reproduce
14. Mutations in a DNA can occur at certain levels. They can occur due to base substitution where one an incorrect base is incorporated in DNA instead of the correct one or they can also occur as a result of changes within base, like formation of thymine dimers within DNA. Other forms of mutation include deletion, insertion and frameshift mutation. When the base sequence of DNA is altered, and if the base substitution is non-synonymous, then it leads to a different amino acid being incorporated into protein when DNA is transcribed and translated into a protein. One different amino acid can have a great effect on person's characteristics. Sickle cell anemia is a result of change of one amino acid in hemoglobin protein molecule.

15. Sexual reproduction is a process involving the fusion of two gametes to form a zygote. Gametes are special reproductive cells produced by meiosis. It produces genetically dissimilar offspring. Offspring may inherit beneficial qualities from both parents and there is a greater genetic variation in the offspring, leading to species that are better adapted to changes in the environment.

16. ?????

  • Science -

    ok

  • Science -

    Can someone check my answers and help me on Number 16 Ms Sue anyone guides can you help me.

  • Science -

    What is question 16?

  • Science -

    16. Explain how asexual reproduction occurs and how it limits the spread of harmful characteristics.

  • Science -

    Help Help Help

  • Science -

    I don't know enough biology to help you with your questions. However, this site may help with # 16.

    http://www.ucmp.berkeley.edu/glossary/gloss6/asexual.html

  • Science -

    This answer is from a website called brainly

    Asexual reproduction occurs when a single organism has an offspring. Asexual reproduction requires only one parent, and the cells divide by budding, regeneration, or fission. Asexual reproduction limits the spread of harmful characteristics because the offspring is only inheriting from one parent, so therefore it will be inheriting only those characteristics. And the parent would already be adapted to the living environment.

  • Science -

    Ms. Sue anon is copying and pasting from a website.

  • Science -

    Yes, and anon cited his source.

  • Science -

    ASAP ASAP ASAP Still that's paralyzing because it's not her own words. Do you agree or not agree. ASAP ASAP ASAP.

  • Science -

    hi

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