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Alborosie
3 years ago
13

What is the estimated age of the trilobite fossils (bottom layer of fossils)?

Biology
1 answer:
kkurt [141]3 years ago
5 0

Answer:

521 million years ago

Explanation:

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Suppose two independently assorting genes are involved in the pathway that determines fruit color in squash. These genes interac
Vaselesa [24]

Answer:

120 white individuals

30 yellow individuals

10 green individuals  

Explanation:

Available data:

  • Dominant epistasis: Phenotypic frequencies 12:3:1
  • W allele codes for a dominant white phenotype
  • w allele codes for a colored squash
  • Y allele codes for a dominant yellow phenotype
  • y allele codes for a recessive green phenotype
  • W allele will always mask the phenotype produced by Y or y alleles
  • 160 offspring

Dihybrid Cross

Parental)   WwYy      x      WwYy

Gametes) WY   Wy    wY    wy

                 WY   Wy    wY    wy

Punnet Square)

                            WY         Wy        wY       wy

               WY     WWYY   WWYy   WwYY  WwYy

               Wy      WWYy   WWyy    WwYy  Wwyy

               wY      WwYY   WwYy    wwYY  wwYy

               wy       WwYy   Wwyy    wwYy  wwyy

F1 Phenotypic Frequency)

White phenotype: 12/16 = 120 individuals

Yellow phenotype: 3/16 = 30 individuals

Green Phenotype: 1/16 = 10 individuals

To know how many offspring are expected to have the white, yellow, and green phenotypes, you can perform a three simple rule. This is:

16 ------- 160 offspring

12 White ------- X = 120 offspring

3 Yellow ------- X= 30 offspring

1 Green --------X = 10 offspring              

3 0
3 years ago
Which of the following organisms does not have a cell wall a.) plant
prohojiy [21]
Animal cells do not have cell walls. But plant cells do
3 0
2 years ago
Chromosomes that do not determine the sex of an individual are called ______.
pantera1 [17]
They are called Autosomes
4 0
3 years ago
Read 2 more answers
What is the one component in photosynthesis that is not recycled and must be constantly available?
Troyanec [42]
The component in photosynthesis that  is not recycled and must be constantly available is energy :)))
i hope this is helpful 
have a nice day 
6 0
3 years ago
The cell theory has three main components. Which three scientists’ conclusions formed these components?
Blababa [14]

Answer:

Schleiden, Schwann, and Virchow

Explanation:

A component of the cell theory is that all living things are composed of one or more cells.

A component of the cell theory is that the cell is the basic unit of life.

A component of the cell theory is that all new cells arise from existing cells.

3 0
3 years ago
Read 2 more answers
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