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AURORKA [14]
3 years ago
15

Index fossils are the remains of species that existed on Earth for relatively short periods of time. True or false?

Biology
1 answer:
GenaCL600 [577]3 years ago
5 0

Answer:

yh that true cause they are useful

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Who criticized Marx for focusing exclusively on economics and social class as explanations for human behavior and advocated soci
GaryK [48]

Answer:

The answer is Max Weber.

Explanation:

Max Weber assumed that society and the problems of governments were dominant consequences in society, and the enhancement of balance was transformed into an establishment in sociology. In society, culture, ideas, religion, etc., they contribute to the prosperity of the social order. The subjective for Max Weber became the interpretative in human science.

6 0
3 years ago
In cats, the gene for Calico (multicolored) cats is an x-linked trait that is
hichkok12 [17]

Answer:

Considering the <u>whole progeny</u> (100%), there will be

  • 25% Black male kittens, XBY
  • 0% Calico Male kittens
  • 25% Calico female kittens, XBXR

Explanation:

<u>Available data:</u>

  • The gene for Calico (multicolored) cats is an x-linked trait and codominant
  • Calico Females receive a "B" and an "R" gene, and have black and orange splotches on white coats. Their genotype is XBXR.
  • Males can only be black or orange, but never calico. Their genotype is XBY and XRY

Cross: a female calico cat with a black male

Parentals)   XBXR    x    XBY

Gametes)  XB  XR       XB   Y

Punnett square)    XB        XR

                   XB   XBXB   XBXR

                    Y      XBY      XRY  

F1) Among the whole progeny:

  •     2/4 = 50%  will be black (female XBXB and male XBY)
  •     1/4  = 25% will be Calico (female XBXR)
  •     1/4  = 25% will be Orange (male XRY)  

   Among females:

  •    1/2 = 50% of females will be black, XBXB
  •    1/2 = 50% of females will be Calico, XBXR

   Among males:

  •    1/2 = 50% of males will be black, XBY
  •    1/2 = 50% of males will be orange, XRY        
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3 years ago
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The beating or fanning movements of three pairs of maxilliped flagella in crabs and crayfish modify exhalent gill currents while drawing water over chemoreceptors on the head. They play an integral part both in signalling by distributing urine odours, and in active chemosensation.

Explanation:

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Which of the following statements about rural communities is true?
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The Correct Answer Is C
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Sporophytes are? <br> a. Gametes <br> b. zygotes <br> c. haploid <br> d. diploid
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