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g100num [7]
1 year ago
11

In a dichotomous classification system, __________.

Biology
1 answer:
Arlecino [84]1 year ago
6 0

b) A population first divided into two parts, then three parts, and then four parts, until a description identifies a single member.

Hope it will help you ❤️

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Bacteria may be killed during cooking, but may leave behind ______ that will later grow and produce more bacteria.
Aliun [14]
The answer is SPORES.

Some bacteria, take for example clostridium can be killed with heat but still leave their spores.

They are heat-resistant spores that may survive cooking and later grow and produce large numbers of cells if the storage temperature is appropriate for their growth.


7 0
1 year ago
Black fur (B) is dominant to white fur (b) in guinea pigs. An F1 cross was conducted and resulted in 100% heterozygous guinea pi
Lemur [1.5K]

Answer:

D. 1 BB : 2 Bb : 1 bb

Explanation:

This question involves a single gene coding for fur color in guinea pig. Black fur (B) is dominant over white fur (b). This means that, as stated in the question, if a black fur parent (BB) is crossed with a white fur parent (bb), a 100% heterozygous offspring (Bb) with black fur will result.

If two heterozygous guinea pigs are crossed i.e. Bb × Bb, the following gametes will be produced by each heterozygous parent:

Bb = B and b

Using these gametes in a punnet square (see attached image), offsprings with the following genotypic ratio will be produced:

1 BB : 2 Bb : 1 bb

BB and Bb = black fur guinea pigs

bb = white fur guinea pigs

3 0
1 year ago
Which are potential sources of error in the experiment? Check all that apply. estimating temperature to the nearest tenth of a d
Dafna11 [192]

The correct option are as follows:

estimating temperature to the nearest tenth of a degree

estimating the mass of the sample to the nearest tenth of a gram

the position of the cups of sand and water under the heat lamp

<u>Explanation:</u>

Error is an uncertainty or the amount of deviation in a physical quantity. There may arise some deviance while measuring physical quantity due to approximation.

Instrumental, environmental, procedural, and human are some of the common sources of error. The error can be classified into two types:

i) Random error

ii) Systematic error

Types of error are determined based on the deviation in the result. While observing the temperature of something, the temperature should be noted to the nearest tenth of a degree. In similar way, the mass of the sample should be estimated to the nearest tenth of a gram.

7 0
1 year ago
Read 2 more answers
Which organelles aid in locomotion?
nordsb [41]
<span>Cilia projections from cell surfaces that aid in locomotion and feeding; also used to sweep substances along surface, as well has flagella which is a tail-like projection that aids in locomotion</span>
5 0
1 year ago
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Polar bears and grizzly bears share a common ancestor (similar to you and your cousin sharing a grandparent); Describe some sele
Natali5045456 [20]
Lasting genetic similarities make the two bears biological sister species, more closely related to one another than to any others. ... But Ursus maritimus has also evolved to match its polar environment, growing a longer snout than brown bears' and larger, paddle-like paws, both of which aid polar bears in hunting seals.
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