1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
OverLord2011 [107]
3 years ago
13

Fill in the blank Blank 1 -they share a common ancestor -they do not share a common ancestor -they are not linked through evolut

ion Blank 2 -the Archaeopteryx evolved from birds -the Archaeopteryx came after dinosaurs but before birds -the Archaeopteryx evolved before nonflying dinosaurs

Biology
1 answer:
Pavel [41]3 years ago
6 0

Answer:

1) they share a common ancestor

2) the Archaeopteryx came after dinosaurs but before birds

Explanation:

Birds, dinosaurs and Archaeopteryx evolved from a common ancestor so we can say that they share a common ancestor. With the passage of time, changes occurs in the structure of an organism and a new species is formed. Same events occurs with ancestor of birds, dinosaurs and Archaeopteryx. Archaeopteryx is a transitional fossil that comes after the dinosaurs and before the birds. Archaeopteryx is also known as the first on the earth. With the passage of time some dinosaurs bears wing and then converted into birds.

You might be interested in
22. A plant geneticist is investigating the inheritance of genes for bitter taste (Su) and explosive rind (e) in watermelon (Cit
mylen [45]

Answer:

See the answer below

Explanation:

Using the formula for calculating Chi square (X^2):

X^2  =  \frac{(O - E)^2}{E} where O = observed frequency and E = expected frequency.

The observed frequencies for the four phenotypes are 88, 62, 62, and 81 respectively.

For the expected frequency, the phenotypes are supposed to assort in 9:3:3:1 according to Mendel ratio.

Hence, expected frequencies are calculated as:

phenotype (1) = 9/16 x 293 = 164.81

phenotype (2) = 3/16 x 293 = 54.94

phenotype (3) = 3/16 x 293 = 54.94

phenotype (4) = 1/16 x 293 = 18.31

The X^2 is calculated thus:

Phenotype            O               E                             X^2

  1                          88            164.81            \frac{(88 - 164.81)^2}{164.81} = 35.80

  2                          62             54.94            \frac{(62 - 54.94)^2}{54.94} = 0.91

  3                           62             54.94              \frac{(62 - 54.94)^2}{54.94} = 0.91

  4                            81              18.31               \frac{(81 - 18.31)^2}{18.31} = 214.64

Total X^2 = 35.80 + 0.91 + 0.91 + 214.64 = 252.26

To the nearest tenth = 252

Degree of freedom = n - 1 = 4- 1 = 3

X^2 tabulated  = 7.815

<em>The calculated </em>X^2<em> exceeds the critical value, hence, the null hypothesis is rejected. The two genes did not assort independently.        </em>

4 0
2 years ago
An urgent help !!
lianna [129]

Answer:

It was all fun and games until they massaged my a ss. It was all pain no enjoyment. Twas an experience I don't wish to go through again. A pain I wish upon my enemies is simply a massage by an aggressive person. After all there was no relief expect for the person who gave it. Tis 30 bucks that could change one's life. DEAD SERIOUS ABOUT THIS AVOID MASSAGES

Explanation:

4 0
2 years ago
Read 2 more answers
What does the Miller-Urey experiment tell us about the origin of life?
aivan3 [116]

Answer:

B inorganic materials can form organic molecules under the right conditions

7 0
2 years ago
What is the majors metabolic wastes of our body​
Olin [163]

Answer:

They are ammonia, urea, uric acid, and creatinine. All of these substances are produced from protein metabolism.

Metabolic waste is the left over products of both catabolism and anabolism. This waste includes salts, phosphates, sulfates, excess substances, and nitrogenous wastes like urea which are eliminated through urine.

5 0
2 years ago
A biologist analyzes the DNA sequences of one gene in three different primates . The biologist finds that primates A and B have
Nataly_w [17]

The question is incomplete as it does not have the option which are:

  • primates A and B are more closely related to each other than either is to primate C.
  • all three primates appeared on Earth at about the same time.
  • either primate A or primate B must be a direct ancestor of primate C.
  • primate C must have been the ancestor of both primate A and primate B.

Answer:

Primates A and B are more closely related to each other than either is to primate C.

Explanation:

In the given question, on the basis of the given information, it can be predicted that the Primate A and B are more closely related to C as the DNA sequences of these two primates are almost similar. The similarity of the sequence suggests that these primates have descended or diverged from a common ancestor.

The DNA sequence of C is different from both A and B which shows that both A and B are different from the C.

Thus, the selected option is the correct answer.

5 0
3 years ago
Read 2 more answers
Other questions:
  • Why do sex-linked traits follow different patterns of inheritance than other traits?
    10·2 answers
  • As a submarine gets closer to the bottom of the ocean, which of these is it likely to encouter?
    6·1 answer
  • Allen has been studying the genetic material of dogs, to get more insight
    15·1 answer
  • New biosensors, applied like a temporary tattoo to the skin, can alert serious athletes that they are about to "hit the wall" an
    5·1 answer
  • Which label belongs in the area marked Z?
    5·2 answers
  • Can anyone explain to what's Cell Anemia?<br>​
    13·1 answer
  • Which plants are most likely to adapt successfully to a climate change in their environment?
    15·1 answer
  • PLEASE HELP i WILL MAKE BRAINLIST AND GIVE POINTS
    12·1 answer
  • How does artificial selection cause rapid changes in the phenotypes of organisms?
    15·1 answer
  • When a new mutation occurs in a somatic cell of a secually reproducing organism, what percentage of the individual's offspring a
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!