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Posted by on Wednesday, January 16, 2013 at 8:17pm.

1.
How many chromosomes do human sex cells have? (1 point)

22
43
46
23

2.
The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point)

genotype; phenotype
genome; allele
dominant; recessive
none of the above

3.

Of the following, which represents a homozygous recessive genotype?
(1 point)

TT
Tt
tt
TTT

4.
Structures in organisms that are no longer of use are called ______ structures. (1 point)

homologous
obsolete
vestigial
analogous

5.
Change in the hereditary features of a type of organism over time is ______. (1 point)

growth
biogenesis
spontaneous generation
evolution

6.
Studying the early growth and development of animals provides clues to their shared ancestry; this field of study is called ______. (1 point)

embryology
ecology
radiology
oncology

My answers:
1. 23
2. genotype; phenotype
3. tt
4. vestigial
5. growth
6. embryology

  • I don't know - , Wednesday, January 16, 2013 at 8:18pm

    I don't know much about science.

  • 7th grade science ms sue please - , Wednesday, January 16, 2013 at 8:19pm

    okay thanks anyway!

  • 7th grade science ms sue please - , Thursday, January 17, 2013 at 3:53pm

    Connections student? Well, I just took the test;

    1 is correct
    2 I think is correct
    3 is not, it's TT
    As for 4, 5, and 6, I'm not sure of.

  • 7th grade science ms sue please - , Thursday, January 17, 2013 at 7:06pm

    1. 23
    2. correct
    3. tt
    4. correct
    5. correct
    6. correct

  • 7th grade science ms sue please - , Sunday, May 15, 2016 at 9:29pm

    A "normal" human has 46 chromosomes or 23 pairs so if you put 23 then your answer is invalid.

  • 7th grade science ms sue please - , Sunday, May 15, 2016 at 9:30pm

    Lauren, please refrain from making fool out of yourself. A sex cell has 23 chromosomes.

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