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kvasek [131]
1 year ago
15

Brown et al. and Morwood et al. reported in 2004 that they had found skeletal remains of a previously unknown type of hominin, n

ow dubbed Homo floresiensis, on the Indonesian island of Flores. These hominins were small (approximately 1 meter tall) with small braincases (approximately 380 cubic centimeters) as compared with other hominins. The remains of H. floresiensis were found alongside handmade stone tools and the remains of dwarf elephants that also inhabited the island, suggesting that H. floresiensis was able both to make tools and to coordinate the hunting of animals much larger than itself. H. floresiensis is estimated to have lived at the site where the remains were found from at least 38,000 years ago to 18,000 years ago.
Biology
1 answer:
alekssr [168]1 year ago
6 0

A large brain is not necessarily required for toolmaking.

What is toolmaking?

Making tools is done to manufacture equipment that aids in producing parts or goods. A toolmaker who has a thorough understanding of the product design develops components or tools that are employed in the production of the designs. To create, hold, or test parts or products throughout their production phase, it requires high accuracy and machine equipment. Additionally, because a toolmaker's work is unique, they frequently have to develop the unique tools or alter existing tools.

As it entails developing and the engineering tools needed for producing parts or components, the tool-making process is a crucial step in the manufacturing process.

Learn more about the toolmaking with the help of the given link:-

brainly.com/question/2466113

#SPJ4

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What tends to happen after a mass extinction event? How are humans affecting the ability of this to happen?
GalinKa [24]

Answer:

Scientists have been concerned that human activities could cause more plants and animals to become extinct than any point in the past. Along with human-made changes in climate (see above), some of these extinctions could be caused by overhunting, overfishing, invasive species, or habitat loss

6 0
2 years ago
Which compound is a hydrocarbon? <br><br> a. H20<br> b. CO2<br> c. C2H6<br> d. C6H12O6
erastovalidia [21]
The answer is d-C6H12O6
6 0
3 years ago
Read 2 more answers
haemophilia is an x-linked recessive disorder that is always pass their generations that can be traced by using a pedigree what
Marat540 [252]

The probability of the female child of Charles and Marie suffering from hemophilia​ is 50% or 0.5.

<h3>What is the probability of hemophilia?</h3>

Hemophilia is a disease that is linked to the X-chromosome.

The probability of having female who suffers from hemophilia depends on the genotype of the parents.

Assuming that the genotype of the parents are as follows:

Father: XcY --> hemophilic

Mother: XXc --> carrier

A cross between the parents will produce two female offspring with genotypes, XcXc and XXc.

Therefore, the probability of the female child of Charles and Marie suffering from hemophilia​ is 50% or 0.5.

Learn more about hemophilia at: brainly.com/question/14203344

#SPJ1

4 0
1 year ago
Jacob calls his friend Mark to tell him the news, and to Jacob's surprise, Mark has heard of MSUD. In fact, Mark says that his w
Tanya [424]

Answer:

Explanation:

Since Mark's wife was a carrier, it means that she is heterozygous for the trait. And after Mark got tested, they decided to have children due to no increased risk if they do have children, it means the condition is not an autosomal dominant condition but a recessive condition because if the condition is dominant, only one copy of the affected allele is needed to increase risk.

Thus, with a no increased risk, it means Mark is normal i.e. carries no copy of the recessive allele.

8 0
3 years ago
A female fly that has miniature wings and sepia eyes is crossed with a male that has normal wings and is homozygous for red eyes
Eduardwww [97]

Answer and Explanation:

  • The gene that expresses the size of the wing is X-linked. The dominant allele expresses long wings, XM, while the recessive allele expresses miniature wings, Xm.  
  • The gene that expresses the color of the eyes is autosomal. The dominant allele expresses red color, S, and the recessive allele expresses sepia color, s.

A <em>female fly</em> that has <em>miniature wings and sepia eyes</em> (<em>XmXm ss</em>) is crossed with a <em>male</em> that has <em>normal wings and is homozygous for red eyes (XMY SS). </em>

The F1 are intercrossed to produce the F2.

1º Cross:

Parental) XmXm ss    x    XMY SS

Gametes) Xms   Xms     Xms   Xms  

                XMS   XMS    YS    YS

Punnet Square)    Xms           Xms            Xms             Xms

                XMS   XMXmSs    XMXmSs   XMXmSs    XMXmSs

                XMS   XMXmSs    XMXmSs   XMXmSs    XMXmSs

                YS      XmY Ss      XmY Ss       XmY Ss       XmY Ss

                YS      XmY Ss      XmY Ss       XmY Ss       XmY Ss

F1) 1/2 or 50% of the progeny are females and the other 1/2 or 50% are males

  100% of the females (1/2 or 50% of the progeny) are long-winged and  red-eyed

    100% of the males (1/2 or 50% of the progeny) are miniature.winged and red-eyed.

2º Cross:

Parental) XMXm Ss      x      XmY Ss

Gametes) XMS   XMs  XmS  Xms

                XmS   Xms  YS    Ys

Punnet Square)       XMS             XMs          XmS             Xms

                  XmS    XMXm SS  XMXm Ss   XmXm SS   XmXm Ss

                  Xms    XMXm Ss   XMXm ss   XmXm Ss    XmXm ss

                   YS      XMY SS     XMY Ss      XmY SS        XmY Ss

                   Ys       XMY Ss     XMY ss       XmY Ss        XmY ss

F2) 8/16=4/8=1/2 or 50% of the progeny are females and the other 1/2 or 50% are males

<u><em>Females (8/16)</em></u>:    

  • 3/8 of the females are long-winged and red-eyed, XMX- S-
  • 1/8 of the females are long-winged and sepia-eyed, XMX- ss
  • 3/8 of the females are miniature-winged and red-eyed, XmXm S-
  • 1/8 of the females are miniature-winged and sepia-eyed, XmXm ss

<u><em>Males (8/16)</em></u>:    

  • 3/8 of the males are long-winged and red-eyed, XMY S-
  • 1/8 of the males are long-winged and sepia-eyed, XMY ss
  • 3/8 of the males are miniature-winged and red-eyed, XmY S-
  • 1/8 of the males are miniature-winged and sepia-eyed, XmY ss  

Note: The symbol "-" means that in its place might be a recessive allele or a dominant allele. For example, <em>S-</em> means that it might be <em>SS</em> or <em>Ss</em>.  

4 0
3 years ago
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